PIMCO Corporate and Income Opportunity Fund


Schedule of Investments PIMCO Corporate & Income Opportunity Fund	March 31, 2026 (Unaudited)


(AMOUNTS IN THOUSANDS*, EXCEPT NUMBER OF SHARES, CONTRACTS, UNITS AND OUNCES, IF ANY)
		PRINCIPAL AMOUNT (000s)		MARKET VALUE (000s)
INVESTMENTS IN SECURITIES 122.9% ¤
LOAN PARTICIPATIONS AND ASSIGNMENTS 40.0%
Aligned Data Centers International LP 7.223% due 12/18/2029 «~	$	10,300	$	10,367
Altar Bidco, Inc. 9.108% due 02/01/2030 ~		3,450		3,277
Altice France SA
6.391% (EUR003M + 4.375%) due 04/30/2028 ~	EUR	6,927		7,974
6.391% (EUR003M + 4.375%) due 10/30/2028 ~		2,896		3,332
7.797% (TSFR3M + 4.125%) due 04/30/2028 ~	$	1,318		1,313
8.735% (TSFR3M + 5.063%) due 10/30/2028 ~		6,762		6,743
8.891% (EUR003M + 6.875%) due 05/30/2031 ~	EUR	13,310		15,448
9.047% (TSFR3M + 5.375%) due 05/14/2029 ~	$	1,677		1,670
10.547% (TSFR3M + 6.875%) due 05/31/2031 ~		19,841		19,920
AP Core Holdings II LLC 9.428% (TSFR3M + 5.500%) due 09/01/2027 ~		33,104		32,347
Bausch Health Cos., Inc. 9.918% (TSFR1M + 6.250%) due 10/08/2030 ~		17,457		16,894
BDO USA PC
8.166% (TSFR3M + 4.500%) due 08/31/2028 «~		516		510
8.640% (TSFR3M + 5.000%) due 08/31/2028 «~		6,721		6,713
Central Parent, Inc. 6.950% (TSFR3M + 3.250%) due 07/06/2029 ~		35,335		25,312
Clover Holdings 2 LLC
TBD% - 3.500% due 12/10/2029 ~µ		2,209		2,037
7.676% (TSFR1M + 4.000%) due 12/09/2031 ~		8,889		8,533
Comexposium TBD% (EUR012M + 0.000%) due 07/10/2031 «~	EUR	24,800		34,971
Coreweave Compute Acquisition Co. IV LLC 9.669% - 9.700% (TSFR3M + 6.000%) due 05/16/2029 «~	$	15,721		16,201
Cyberswift U.S. Finco LLC 7.646% (TSFR3M + 4.000%) due 10/08/2032 ~		2,900		2,863
Databricks, Inc.
1.000% due 01/05/2032 ~µ		1,087		1,082
8.171% (TSFR1M + 4.500%) due 01/05/2032 ~		4,913		4,888
Dun & Bradstreet Corp.
0.500% - 5.500% due 08/26/2032 «~µ		493		493
0.500% - 5.500% (TSFR1M + 5.500%) due 08/26/2032 «~		4,915		4,818
Electronic Arts, Inc. TBD% due 03/24/2033		12,300		12,238
Encina Private Credit LLC TBD% due 11/30/2026 «~		381		315
Envalior Finance GmbH 7.526% (EUR003M + 5.500%) due 03/29/2030 ~	EUR	5,400		5,614
Envision Healthcare Corp. 11.641% (TSFR3M + 7.875%) due 11/03/2028 «~	$	25,457		26,221
Finastra USA, Inc.
7.671% (TSFR3M + 4.000%) due 09/15/2032 ~		34,875		32,833
10.674% (TSFR3M + 7.000%) due 09/15/2033 ~		10,172		8,799
Forward Air Corp. 8.167% (TSFR3M + 4.500%) due 12/19/2030 ~		30,334		29,606
FPS Finance Co. 1 LLC 6.610% (EUR003M + 2.950%) due 05/26/2028 «~		500		500
Galaxy U.S. Opco, Inc. 12.667% (TSFR3M + 5.250%) due 07/31/2030 ~		23,630		20,508
Gateway Casinos & Entertainment Ltd. 9.936% (TSFR3M + 6.250%) due 12/18/2030 ~		13,964		13,999
Gray Television, Inc. 8.918% (TSFR1M + 5.250%) due 06/04/2029 ~		148		148
iHeartCommunications, Inc. 9.557% (TSFR1M + 5.775%) due 05/01/2029 ~		1,886		1,658
Ineos U.S. Finance LLC
6.668% (TSFR1M + 3.000%) due 02/07/2031 ~		2,152		1,862
6.918% (TSFR1M + 3.250%) due 02/18/2030 ~		20,267		17,772
ION Platform Finance U.S., Inc. 7.450% (TSFR3M + 3.750%) due 10/07/2032 ~		12,200		9,872
Ivanti Software, Inc.
8.411% (TSFR3M + 4.750%) due 06/01/2029 ~		25,781		17,497
9.411% (TSFR3M + 5.750%) due 06/01/2029 ~µ		3,437		3,441
J&J Ventures Gaming LLC 8.782% (TSFR1M + 5.000%) due 04/26/2028 «~		3,162		3,162
Lealand Finance Co. BV 6.782% (TSFR1M + 3.000%) due 06/30/2027 ~		189		159
Lealand Finance Co. BV (7.782% Cash) 7.782% (TSFR1M + 4.000%) due 12/31/2027 ~		2,439		2,040


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


Magenta Security Holdings LLC
9.917% (TSFR3M + 6.250%) due 07/27/2028 ~		283	281
10.177% (TSFR3M + 6.250%) due 07/27/2028 ~		1,380	307
10.677% (TSFR3M + 6.750%) due 07/27/2028 ~		297	213
10.927% (TSFR3M + 7.000%) due 07/27/2028 ~		388	163
McAfee LLC 6.668% (TSFR1M + 3.000%) due 03/01/2029 ~		15,339	13,748
Mercury Aggregator LP TBD% due 04/03/2027 «~		4,506	0
MH Sub I LLC 7.918% (TSFR1M + 4.250%) due 12/31/2031 ~		5,925	3,977
MPH Acquisition Holdings LLC
7.417% (TSFR3M + 3.750%) due 12/31/2030 ~		16,414	16,410
8.528% (TSFR3M + 4.600%) due 12/31/2030 ~		24,205	21,552
Newfold Digital Holdings Group, Inc.
7.269% - 9.442% (TSFR1M + 3.500%) due 04/30/2029 ~		8,758	5,848
7.269% - 9.442% (TSFR3M + 5.750%) due 04/30/2029 «~		651	495
Nexstar Broadcasting, Inc. TBD% due 03/18/2033		1,530	1,515
Nscale AS TBD% - 8.700% (TSFR3M + 5.000%) due 08/11/2032 «~µ		6,300	6,300
Obol France 3 SAS 7.103% (EUR006M + 5.000%) due 12/31/2028 ~	EUR	11,408	13,079
OCS Group Holdings Ltd. 8.980% due 11/28/2031 ~	GBP	2,600	3,429
Paradigm Parent LLC 8.200% (TSFR3M + 4.500%) due 04/16/2032 ~	$	597	495
Peraton Corp.
7.517% (TSFR3M + 3.750%) due 02/01/2028 ~		55,919	47,857
11.523% (TSFR3M + 7.750%) due 02/01/2029 ~		1,606	1,165
Polaris Newco LLC
6.026% (EUR003M + 4.000%) due 06/02/2028 ~	EUR	22,659	22,305
7.928% (TSFR3M + 4.000%) due 06/02/2028 ~	$	27,152	23,970
Poseidon Bidco SASU 7.504% (EUR006M + 5.000%) due 03/13/2030 ~	EUR	6,500	2,254
Project Alpha Intermediate Holding, Inc. 6.950% (TSFR3M + 3.250%) due 10/26/2030 ~	$	5	4
Promotora de Informaciones SA 7.499% (EUR003M + 5.470%) due 12/31/2029 «~	EUR	57,292	64,731
SCUR-Alpha 1503 GmbH 9.167% (TSFR3M + 5.500%) due 03/29/2030 ~	$	17,174	15,113
Softbank Vision Fund II 7.350% (TSFR3M + 3.650%) due 04/25/2029 «~		16,338	16,610
Spruce Bidco II, Inc.
0.500% - 8.371% (TSFR6M + 4.750%) due 01/30/2032 «~µ		764	762
0.500% - 8.371% (JY0003M + 5.000%) due 01/30/2032 «~	JPY	65,279	408
0.500% - 8.371% (CDOR06 + 4.750%) due 01/30/2032 «~	CAD	609	434
0.500% - 8.371% (TSFR6M + 4.750%) due 01/30/2032 «~	$	3,364	3,336
Steenbok Lux Finco 2 SARL 10.000% due 12/31/2028 ~	EUR	54,829	19,068
Stepstone Group Midco 2 GmbH
6.599% (EUR006M + 4.500%) due 04/26/2032 ~		15,900	16,144
8.199% (TSFR6M + 4.500%) due 12/19/2031 ~	$	28,512	25,091
Stonepeak Bayou Holdings LP 6.450% (TSFR3M + 2.750%) due 10/01/2032 ~		18,200	17,730
Subcalidora 2 7.877% (EUR003M + 5.750%) due 08/14/2029 «~	EUR	18,000	20,336
Syniverse Holdings, Inc. 10.700% (TSFR3M + 7.000%) due 05/13/2027 «~	$	47,861	44,332
U.S. Renal Care, Inc.
1.500% - 9.675% (TSFR1M + 6.000%) due 09/25/2030 «~		24,786	25,252
8.782% (TSFR1M + 5.000%) due 06/28/2028 ~		57,449	54,259
Unicorn Bay 13.000% due 12/31/2026 «~	HKD	90,145	11,640
Upfield BV TBD% due 10/31/2030	GBP	12,500	15,842
Westmoreland Coal Co. 8.000% due 03/15/2029 «~	$	1,263	549

Total Loan Participations and Assignments (Cost $1,041,677)			972,954

CORPORATE BONDS & NOTES 39.5%
BANKING & FINANCE 9.5%
123 Lights Re Ltd. 14.510% (FHMMUSTF + 11.000%) due 09/14/2031 ~		450	464
Alamo Re Ltd.
11.944% (FHMMUSTF + 8.434%) due 06/07/2027 ~		600	622
12.590% (FHMMUSTF + 9.080%) due 06/07/2026 ~		750	760
15.390% (FHMMUSTF + 11.880%) due 06/08/2026 ~		7,890	8,044
Antares Holdings LP 6.350% due 10/23/2029 (m)		1,150	1,139
Armor Holdco, Inc. 8.500% due 11/15/2029 (m)		13,000	11,884
Armor RE II Ltd.
12.060% (BRMMUSDF + 8.500%) due 01/07/2032 ~		350	371


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


13.760% (BRMMUSDF + 10.200%) due 05/07/2031 ~		250	263
Bayou Re Ltd. 11.872% (BNMMDTSC + 8.332%) due 04/30/2031 ~		300	312
BGC Group, Inc. 6.600% due 06/10/2029 (m)		1,300	1,342
Blue Ridge Re Ltd. 7.010% (FHMMUSTF + 3.500%) due 01/08/2029 ~		250	252
BOI Finance BV 7.500% due 02/16/2027 (m)	EUR	6,400	7,547
Bonanza RE Ltd. 3.659% (MSMMUSTF + 0.000%) due 01/08/2027 ~	$	550	467
Cape Lookout Re Ltd.
8.760% (FHMMUSTF + 5.250%) due 03/21/2033 ~		450	450
9.510% (FHMMUSTF + 6.000%) due 03/21/2033 ~		450	450
12.239% (GSMMUSTF + 8.702%) due 04/05/2027 ~		2,200	2,234
CI Financial Corp. 7.500% due 05/30/2029 (m)		3,000	3,150
Citrus Re Ltd.
8.922% (T-BILL 3MO + 5.250%) due 06/07/2033 ~		250	250
9.910% (T-BILL 3MO + 6.250%) due 06/07/2033 ~		250	250
Commonwealth RE Ltd. 7.417% (JMMMUSTF + 3.857%) due 07/08/2030 ~		9,378	9,440
Credicorp Capital Sociedad Titulizadora SA 9.700% due 03/05/2045	PEN	2,900	887
Credit Suisse AG AT1 Claim	$	6,636	2,323
East Lane Re VII Ltd. 12.160% (BRMMUSDF + 8.500%) due 03/31/2032 ~		600	601
Everglades Re II Ltd.
14.041% (GSMMUSTI + 10.500%) due 05/13/2027 ~		1,500	1,520
15.041% (GSMMUSTI + 11.500%) due 05/13/2031 ~		1,500	1,523
16.291% (GSMMUSTI + 12.750%) due 05/13/2027 ~		1,500	1,526
F&G Annuities & Life, Inc.
6.250% due 10/04/2034 (m)		400	380
6.500% due 06/04/2029 (m)		600	603
Ford Motor Credit Co. LLC 5.676% (SOFRRATE + 2.030%) due 03/20/2028 ~(m)		2,400	2,404
Gateway Re Ltd.
5.560% (BRMMUSDF + 2.000%) due 07/06/2029 ~		2,700	2,700
14.440% (BRMMUSDF + 10.880%) due 07/08/2026 ~		250	257
Golden Bear Re Ltd.
13.162% (T-BILL 1MO + 9.500%) due 03/08/2032 ~		650	650
13.412% (JMMMUSTF + 9.750%) due 01/08/2029 ~		1,410	1,436
Greengrove RE Ltd. 11.290% (BNMMDTSC + 7.750%) due 04/08/2032 ~		400	415
GSPA Monetization Trust 6.422% due 10/09/2029		3,006	3,026
Hampton Roads PPV LLC 6.171% due 06/15/2053 (m)		1,800	1,426
Handshake Re Ltd. 8.060% (JMMMUSTF + 4.500%) due 01/08/2030 ~		250	249
Herbie Re Ltd. 7.780% (MSMMUSTF + 4.250%) due 01/07/2030 ~		250	250
Hestia Re Ltd.
3.640% (BNMMDTSC + 0.100%) due 04/22/2029 ~		54	30
10.290% (BNMMDTSC + 6.750%) due 03/13/2032 ~		250	254
11.790% (BNMMDTSC + 8.250%) due 03/13/2032 ~		250	255
Integrity RE III Ltd.
6.010% (FHMMUSTF + 2.500%) due 06/07/2029 ~		250	250
15.760% (FHMMUSTF + 12.250%) due 06/06/2028 ~		400	416
29.010% (FHMMUSTF + 25.500%) due 06/06/2027 ~		350	385
Integrity Re Ltd.
20.744% (FHMMUSTF + 17.234%) due 06/08/2026 ~		1,100	1,132
26.306% (FHMMUSTF + 22.796%) due 06/08/2026 ~		1,100	1,142
ION Platform Finance SARL
6.500% due 09/30/2030 (m)	EUR	2,200	2,124
6.875% due 09/30/2032 (m)		4,500	4,158
7.875% due 05/01/2029 (m)		18,924	20,414
ION Platform Finance U.S., Inc. 7.875% due 09/30/2032 (m)	$	6,400	4,962
ION Platform Finance U.S., Inc./ION Platform Finance SARL
9.000% due 08/01/2029 (m)		4,830	4,483
9.500% due 05/30/2029 (m)		2,700	2,545
Kona Spc Ltd. 5.718% due 09/15/2026 «•	EUR	1,800	2,094
Locke Tavern Re Ltd.
4.060% (JMMMUSTF + 3.250%) due 04/11/2033 ~	$	400	400
4.060% (JMMMUSTF + 4.250%) due 04/11/2033 ~		400	400
Long Point Re IV Ltd. 7.810% (BRMMUSDF + 4.250%) due 06/01/2026 ~		12,400	12,432
Longleaf Pine Re Ltd. 21.473% (GSMMUSTI + 17.932%) due 05/27/2031 ~		350	371
Lower Ferry Re Ltd.
8.176% (MSMMUSTF + 4.646%) due 07/08/2030 ~		1,550	1,566
9.034% (MSMMUSTF + 5.504%) due 07/08/2030 ~		13,050	13,214
Luca RE Ltd. 10.810% (JMMMUSTF + 7.250%) due 07/22/2031 ~		1,000	1,031


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


Marex Group PLC 6.404% due 11/04/2029 (m)		900	927
Mayflower Re Ltd.
8.555% (FHMMUSTF + 5.045%) due 07/08/2030 ~		3,075	3,105
10.023% (FHMMUSTF + 6.513%) due 07/08/2030 ~		17,345	17,570
Nature Coast Re Ltd.
11.661% (T-BILL 3MO + 8.000%) due 02/26/2030 ~		500	499
13.291% (GSMMUSTI + 9.750%) due 04/10/2033 ~		300	311
Nissan Motor Acceptance Co. LLC 5.698% (SOFRINDX + 2.050%) due 09/13/2027 ~(m)		1,100	1,091
Palm RE Ltd. 11.290% (BNMMDTSC + 7.750%) due 06/07/2032 ~		400	412
Polestar Re Ltd.
10.661% (BRMMUSDF + 7.000%) due 01/08/2029 ~		350	351
12.661% (BRMMUSDF + 9.000%) due 01/08/2029 ~		350	350
14.150% (BRMMUSDF + 10.590%) due 01/07/2028 ~		850	891
16.810% (BRMMUSDF + 13.250%) due 01/07/2027 ~		2,200	2,275
PRIO Luxembourg Holding SARL 6.750% due 10/15/2030 (m)		5,800	5,649
Purple Re Ltd.
6.060% (JMMMUSTF + 2.500%) due 06/07/2033 ~		450	450
12.686% (JMMMUSTF + 9.126%) due 06/07/2027 ~		400	413
14.140% (JMMMUSTF + 10.580%) due 06/05/2026 ~		3,420	3,476
Quercus II Re DAC 13.079% (EUR003M + 11.000%) due 01/07/2028 ~	EUR	500	578
Sanders Re III Ltd.
11.280% (BRMMUSDF + 7.720%) due 06/05/2029 ~	$	6,700	6,777
15.880% (BRMMUSDF + 12.320%) due 04/09/2029 ~		3,241	2,107
Starwood Property Trust, Inc. 5.250% due 10/15/2028 (m)		2,100	2,077
Thames Ssnm Unfunded Comm 9.750% due 10/10/2027	GBP	3	4
Titanium 2l Bondco SARL 6.250% due 01/14/2031	EUR	21,922	4,117
Torrey Pines Re Ltd.
9.596% (JMMMUSTF + 6.036%) due 06/07/2027 ~	$	500	517
10.666% (JMMMUSTF + 7.106%) due 06/07/2027 ~		400	415
12.938% (BRMMUSDF + 9.378%) due 06/05/2026 ~		400	404
Tremont Re Ltd. 7.661% (T-BILL 1MO + 4.000%) due 03/22/2033 ~		250	250
Uniti Group LP/Uniti Fiber Holdings, Inc./CSL Capital LLC 6.000% due 01/15/2030 (m)		22,866	21,532
Ursa Re II Ltd.
8.661% (MSMMUSTF + 5.000%) due 12/07/2029 ~		250	248
11.411% (MSMMUSTF + 7.750%) due 06/07/2028 ~		700	707
Ursa Re Ltd.
11.041% (GSMMUSTI + 7.500%) due 02/22/2028 ~		1,100	1,125
12.810% (JMMMUSTF + 9.250%) due 12/07/2028 ~		2,300	2,365
Veraison Re Ltd. 8.541% (GSMMUSTI + 5.000%) due 03/08/2033 ~		250	254
Voyager Aviation Holdings LLC 8.500% due 05/09/2026 ^«(d)		9,073	0
Windrose Re Ltd. 8.790% (HSMMUSTF + 5.250%) due 02/11/2033 ~		250	249
Winston RE Ltd.
13.750% (BNMMDTSC + 10.210%) due 02/26/2031 ~		280	291
15.230% (BNMMDTSC + 11.690%) due 02/26/2031 ~		1,700	1,774

			229,486

INDUSTRIALS 26.9%
Altice France Lux 3/Altice Holdings 1 10.000% due 01/15/2033 (m)		5,641	5,134
Altice France SA
6.875% due 10/15/2030 (m)		1,064	1,018
9.500% due 11/01/2029 (m)		4,302	4,351
ams-OSRAM AG
10.500% due 03/30/2029 (m)	EUR	3,900	4,737
12.250% due 03/30/2029 (m)	$	2,200	2,342
APLD ComputeCo 2 LLC 6.750% due 03/15/2031 (m)		1,400	1,391
Aston Martin Capital Holdings Ltd. 10.000% due 03/31/2029 (m)		4,500	3,390
Beignet Investor LLC 6.581% due 05/30/2049 (m)		46,740	48,092
Centene Corp.
2.450% due 07/15/2028 (m)		1,600	1,491
3.000% due 10/15/2030 (m)		1,400	1,228
3.375% due 02/15/2030 (m)		2,730	2,468
4.625% due 12/15/2029		200	190
Central Parent LLC/CDK Global II LLC/CDK Financing Co., Inc. 8.000% due 06/15/2029 (m)		2,540	1,890
Central Parent, Inc./CDK Global, Inc. 7.250% due 06/15/2029 (m)		5,590	4,029
Cerdia Finanz GmbH 9.375% due 10/03/2031 (m)		6,900	6,869


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


Cheplapharm Arzneimittel GmbH
6.750% due 02/15/2032	EUR	3,000	3,397
7.500% due 05/15/2030 (m)		35,900	41,922
Cogent Communications Group LLC/Cogent Finance, Inc.
6.500% due 07/01/2032 (m)	$	17,500	15,278
7.000% due 06/15/2027 (m)		6,535	6,467
CoreWeave, Inc. 9.000% due 02/01/2031 (m)		5,200	4,954
CVR Energy, Inc. 7.500% due 02/15/2031 (m)		3,000	3,025
CVS Pass-Through Trust 7.507% due 01/10/2032 (m)		970	1,025
DISH DBS Corp.
5.250% due 12/01/2026		24,092	23,899
5.750% due 12/01/2028		34,300	33,195
7.750% due 07/01/2026		18,800	18,759
Ecopetrol SA
4.625% due 11/02/2031 (m)		8,800	7,826
7.750% due 02/01/2032 (m)		38,400	38,811
Flora Food Management BV
6.875% due 07/02/2029 (m)	EUR	2,800	3,042
7.500% due 10/31/2030		1,800	2,062
Ford Motor Co. 7.700% due 05/15/2097 (m)	$	16,931	17,129
Greene King Finance PLC 5.665% (SONIO/N + 1.919%) due 12/15/2034 ~	GBP	350	434
GSG Bidco Ltd. 5.375% due 06/15/2036	EUR	3,200	3,673
HCA, Inc. 7.500% due 11/15/2095 (m)	$	4,516	4,812
HF Sinclair Corp. 6.250% due 01/15/2035 (m)		4,900	5,062
Incora Intermediate II LLC (0.500% PIK) 0.500% due 01/31/2030 «(c)		23,067	23,067
Incora Top Holdco LLC 6.000% due 01/30/2033 «(l)		16,034	24,284
Intralot Capital Luxembourg SA
6.513% due 10/15/2031 •(m)	EUR	14,200	15,723
6.750% due 10/15/2031 (m)		5,500	6,089
JetBlue Airways Corp./JetBlue Loyalty LP 9.875% due 09/20/2031 (m)	$	4,729	4,476
Kronos International, Inc. 9.500% due 03/15/2029 (m)	EUR	8,500	8,500
Motion Finco SARL 8.375% due 02/15/2032 (m)	$	1,000	827
National Mentor Holdings, Inc. 10.500% due 12/15/2030 (m)		4,200	4,338
Newfold Digital Holdings Group, Inc. 7.269% due 04/30/2029		3,924	1,699
Nexstar Media, Inc.
6.500% due 09/15/2033		3,080	3,105
7.250% due 04/15/2034 (b)		2,400	2,410
Nissan Motor Co. Ltd.
4.810% due 09/17/2030 (m)		16,100	14,634
7.500% due 07/17/2030 (m)		1,800	1,815
Noble Finance II LLC 8.000% due 04/15/2030 (m)		30,400	31,315
NPC Ukrenergo 6.875% due 11/09/2028		1,000	923
OAK-Eagle Acquireco, Inc.
7.250% due 07/01/2033 (b)		2,400	2,488
8.750% due 07/01/2034 (b)		1,700	1,781
Ocado Group PLC
10.500% due 08/08/2029 (m)	GBP	8,500	11,126
11.000% due 06/15/2030 (m)		12,450	16,457
Petroleos de Venezuela SA
6.000% due 11/15/2026 ^(d)	$	13,500	4,645
9.750% due 05/17/2035 ^(d)		5,000	2,089
Petroleos Mexicanos
6.700% due 02/16/2032 (m)		13,994	13,707
6.840% due 01/23/2030 (m)		2,300	2,307
Prime Healthcare Services, Inc. 9.375% due 09/01/2029 (m)		4,400	4,566
Repsol E&P Capital Markets U.S. LLC 5.976% due 09/16/2035 (m)		1,200	1,222
Russian Railways Via RZD Capital PLC 7.487% due 03/25/2031 ^(d)	GBP	1,500	1,390
Spirit Airlines Pass-Through Trust
3.375% due 08/15/2031 (m)	$	58	54
4.100% due 10/01/2029 (m)		793	779
Thames Water Super Senior Issuer PLC 9.750% due 10/10/2027	GBP	14	20
Topaz Solar Farms LLC
4.875% due 09/30/2039 (m)	$	3,098	2,804
5.750% due 09/30/2039 (m)		16,269	16,197


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


Toucan FinCo Ltd./Toucan FinCo Can, Inc./Toucan FinCo U.S. LLC 8.250% due 05/15/2030 (m)	EUR	4,000	4,008
U.S. Renal Care, Inc. 10.625% due 06/28/2028	$	3,751	3,132
Ubisoft Entertainment SA 0.878% due 11/24/2027 (m)	EUR	8,200	7,657
Valaris Ltd. 8.375% due 04/30/2030 (m)	$	19,491	20,206
Vale SA 0.000% due 12/29/2049 ~(j)	BRL	250,000	21,149
Venture Global LNG, Inc.
8.125% due 06/01/2028 (m)	$	2,400	2,456
9.500% due 02/01/2029 (m)		12,279	13,283
Viridien
8.500% due 10/15/2030 (m)	EUR	2,170	2,640
10.000% due 10/15/2030 (m)	$	8,741	9,309
Vmed O2 U.K. Financing I PLC
5.625% due 04/15/2032 (m)	EUR	5,700	6,072
6.750% due 01/15/2033 (m)	$	8,700	7,785
VZ Secured Financing BV 7.500% due 01/15/2033 (m)		5,100	4,812
Wayfair LLC 7.750% due 09/15/2030 (m)		4,100	4,272

			655,010

UTILITIES 3.1%
Altice Holdings 1 SARL 0.010% due 12/31/2099 «	EUR	26	363
FORESEA Holding SA
7.500% due 06/15/2030 (m)	$	562	552
7.500% due 06/15/2030		785	771
NGD Holdings BV 6.750% due 12/31/2026		816	761
Nova Securitisation SARL
5.750% due 02/03/2031 (m)		10,100	9,784
6.500% due 02/03/2036 (m)		4,900	4,667
OI SA (10.000% Cash or 6.000% PIK and 7.500% Cash or 13.500% PIK) 10.000% due 06/30/2027 ^(c)(d)		36,124	17,520
OI SA (8.500% PIK) 8.500% due 12/31/2028 ^(c)(d)		68,637	729
Peru LNG SRL 5.375% due 03/22/2030 (m)		12,600	12,239
Qwest Corp. 7.375% due 05/01/2030 (m)		6,900	6,846
SW Finance I PLC
1.625% due 03/30/2027	GBP	6,580	8,360
2.375% due 05/28/2028		9,960	12,266
Uniti Group LP/Uniti Group Finance 2019, Inc./CSL Capital LLC 6.500% due 02/15/2029 (m)	$	800	778

			75,636

Total Corporate Bonds & Notes (Cost $1,051,895)			960,132

CONVERTIBLE BONDS & NOTES 2.4%
BANKING & FINANCE 0.0%
Country Garden Holdings Co. Ltd. 0.000% due 12/31/2031 (g)(l)		431	48

INDUSTRIALS 2.4%
ams-OSRAM AG 2.125% due 11/03/2027 (m)	EUR	37,100	41,435
DISH Network Corp. 3.375% due 08/15/2026	$	5,900	5,732
Ubisoft Entertainment SA 2.375% due 11/15/2028	EUR	9,400	10,376

			57,543

Total Convertible Bonds & Notes (Cost $58,418)			57,591

MUNICIPAL BONDS & NOTES 0.6%
CALIFORNIA 0.1%
Golden State, California Tobacco Securitization Corp. Revenue Bonds, Series 2021
3.850% due 06/01/2050	$	45	41
4.214% due 06/01/2050		2,400	1,820

			1,861

MICHIGAN 0.2%
Detroit, Michigan General Obligation Bonds, Series 2014 4.000% due 04/01/2044		6,423	4,953


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)



WEST VIRGINIA 0.3%
Tobacco Settlement Finance Authority, West Virginia Revenue Bonds, Series 2007 0.000% due 06/01/2047 (g)	78,700	7,312

Total Municipal Bonds & Notes (Cost $18,688)		14,126

U.S. GOVERNMENT AGENCIES 5.4%
Federal Home Loan Mortgage Corp. Military Housing Bonds Resecuritization Trust Certificates 6.153% due 11/25/2055 «~(m)	12,914	8,412
Federal Home Loan Mortgage Corp. REMICS
0.170% due 03/15/2043 •	69	45
0.410% due 09/15/2042 •(m)	711	399
0.506% due 07/15/2039 •(m)	2,207	1,839
1.167% due 03/15/2044 •(m)	1,822	1,385
1.912% due 02/15/2036 •(m)	4,189	4,069
3.000% due 12/25/2050 (a)(m)	5,962	1,078
3.313% due 02/15/2034 •(a)	507	53
3.500% due 10/15/2035 (a)	572	47
Federal Home Loan Mortgage Corp. Seasoned Credit Risk Transfer Trust
2.205% due 08/25/2057 ~	9,892	2,894
2.263% due 08/25/2058 ~	6,665	2,477
3.551% due 10/25/2058 ~	3,755	1,711
4.654% due 02/25/2059 ~	15,802	6,628
12.435% due 09/25/2060 ~	11,023	8,684
Federal Home Loan Mortgage Corp. STACR REMICS Trust
9.162% due 01/25/2034 •	5,000	6,105
10.762% due 01/25/2042 •	1,800	1,868
11.162% due 10/25/2041 •	14,900	15,328
11.462% due 11/25/2041 •	23,368	24,167
12.162% due 02/25/2042 •	5,899	6,213
Federal National Mortgage Association Connecticut Avenue Securities Trust
9.162% due 12/25/2041 •	9,800	10,039
9.662% due 10/25/2041 - 12/25/2041 •	19,110	19,551
9.862% due 11/25/2041 •	3,544	3,626
10.662% due 04/25/2042 •	2,600	2,742
13.162% due 03/25/2042 •	500	534
13.512% due 03/25/2042 •	600	646
Federal National Mortgage Association Interest STRIPS 5.000% due 02/25/2036 ~(a)	129	15
Federal National Mortgage Association REMICS
3.000% due 01/25/2042 (a)	39	1
3.500% due 02/25/2033 (a)	469	27
4.500% due 07/25/2050 (a)(m)	3,243	751
Government National Mortgage Association REMICS
2.960% due 01/20/2042 •(a)	568	62
3.500% due 09/16/2041 - 06/20/2042 (a)	254	24

Total U.S. Government Agencies (Cost $133,893)		131,420

U.S. TREASURY OBLIGATIONS 0.1%
U.S. Treasury Bonds
4.875% due 08/15/2045 (o)(q)	1,274	1,270
U.S. Treasury Notes
4.250% due 08/15/2035 (o)(q)	2,011	2,004

Total U.S. Treasury Obligations (Cost $3,369)		3,274

NON-AGENCY MORTGAGE-BACKED SECURITIES 7.2%
Adjustable Rate Mortgage Trust
4.133% due 05/25/2036 •	1,298	499
4.943% due 01/25/2035 •	1,316	1,273
Atrium Hotel Portfolio Trust 5.470% due 12/15/2036 •(m)	12,835	12,617
Banc of America Funding Trust
4.033% due 06/26/2036 •	3,464	2,986
5.500% due 01/25/2036	13	14
6.000% due 07/25/2037	267	229
BCAP LLC Trust
3.606% due 03/27/2036 ~	1,865	1,266
4.447% due 03/26/2037 þ	1,103	1,889
4.586% due 02/26/2036 ~	1,033	961
7.000% due 12/26/2036 ~	1,582	886
BCP Trust 4.984% due 06/15/2038 •	450	356
Bear Stearns ALT-A Trust
4.132% due 08/25/2036 ~	1,991	891
4.433% due 11/25/2036 ~	425	212
4.518% due 08/25/2046 ~	2,207	1,494
4.625% due 09/25/2035 ~	360	155
5.186% due 11/25/2034 ~	129	125
Benchmark Mortgage Trust 2.760% due 02/15/2054 ~	8,388	4,935
BFLD Trust
6.737% due 10/15/2035 •	930	10


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


7.487% due 10/15/2035 •		4,700	35
7.987% due 10/15/2035 •		4,400	17
CD Mortgage Trust 5.688% due 10/15/2048		414	392
Chase Mortgage Finance Trust
4.658% due 12/25/2035 ~		6	5
6.000% due 02/25/2037		1,190	453
6.000% due 03/25/2037		272	138
6.000% due 07/25/2037		1,022	423
CHL Mortgage Pass-Through Trust
5.500% due 07/25/2037		404	157
6.000% due 04/25/2036		175	77
Citigroup Mortgage Loan Trust, Inc.
4.492% due 03/25/2037 ~		194	169
4.593% due 04/25/2037 ~		1,086	981
4.871% due 11/25/2035 ~		9,414	4,459
6.000% due 11/25/2036 ~		8,220	4,383
CitiMortgage Alternative Loan Trust 5.750% due 04/25/2037		898	797
CLNY Trust
5.710% due 11/15/2038 •		1,125	1,089
6.059% due 11/15/2038 •		4,100	3,930
6.755% due 11/15/2038 •		3,150	2,970
Countrywide Alternative Loan Trust
1.457% due 04/25/2037 •(a)		13,334	1,059
4.210% due 03/20/2046 •		2,005	1,905
4.264% due 06/25/2037 ~		447	443
4.333% due 08/25/2035 •		1,183	605
5.500% due 03/25/2035		376	150
5.500% due 09/25/2035		2,589	1,729
5.750% due 01/25/2035		147	146
5.750% due 02/25/2035		296	193
6.000% due 02/25/2035		398	325
6.000% due 04/25/2036		1,111	470
6.000% due 05/25/2036		5,938	2,760
6.000% due 02/25/2037		1,993	963
6.000% due 04/25/2037		4,011	1,707
6.000% due 08/25/2037 •		6,218	2,813
6.250% due 10/25/2036		1,358	758
6.250% due 12/25/2036 •		2,347	931
6.500% due 08/25/2036		655	186
6.500% due 09/25/2036		306	142
7.726% due 02/25/2036 •		690	544
Countrywide Alternative Loan Trust Resecuritization 6.000% due 08/25/2037 ~		1,301	634
CSMC Mortgage-Backed Trust 5.750% due 04/25/2036		829	368
CSMC Trust
5.187% due 07/15/2038 •		1,000	888
8.044% due 07/15/2032 •		2,227	2,223
DBGS Mortgage Trust
3.843% due 04/10/2037 (m)		1,000	942
5.332% due 10/15/2039 •		1,000	998
Eurosail-U.K. PLC
5.215% due 06/13/2045 •	GBP	4,487	5,056
7.865% due 06/13/2045 •		1,394	1,527
First Horizon Alternative Mortgage Securities Trust 6.250% due 11/25/2036	$	942	233
GS Mortgage Securities Corp. Trust 4.920% due 07/15/2035 •		1,298	857
GSR Mortgage Loan Trust
3.979% due 03/25/2037 ~		1,103	516
4.454% due 11/25/2035 ~		321	274
Hilton USA Trust 2.828% due 11/05/2035		2,100	1,801
HomeBanc Mortgage Trust 4.993% due 03/25/2035 •		48	32
IndyMac IMSC Mortgage Loan Trust 6.500% due 07/25/2037		6,532	1,894
JP Morgan Alternative Loan Trust 4.037% due 03/25/2037 ~		3,420	2,950
JP Morgan Chase Commercial Mortgage Securities Trust
4.519% due 04/15/2037 •(m)		939	930
5.029% due 04/15/2037 •		5,636	5,541
5.327% due 06/15/2038 •		1,100	994
6.970% due 02/15/2035 •		4,772	4,565
7.235% due 10/05/2040 (m)		1,600	1,656
JP Morgan Mortgage Trust
4.518% due 06/25/2036 ~		238	155
5.265% due 01/25/2037 ~		308	260
5.299% due 02/25/2036 ~		655	426
5.502% due 10/25/2035 ~		5	5
Lehman Mortgage Trust 6.000% due 07/25/2037		6	5
Lehman XS Trust 4.233% due 06/25/2047 •		1,022	979


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


MASTR Alternative Loan Trust 6.750% due 07/25/2036	2,815	1,033
Merrill Lynch Mortgage Investors Trust 4.342% due 03/25/2036 ~	1,485	681
Morgan Stanley Capital I Trust 5.587% due 12/15/2036 •	8,125	174
New Orleans Hotel Trust 5.309% due 04/15/2032 •(m)	2,200	2,171
NYO Commercial Mortgage Trust
4.882% due 11/15/2038 •(m)	1,000	998
6.332% due 11/15/2038 •	2,500	2,480
Pretium Mortgage Credit Partners LLC 5.249% due 10/25/2055	13,195	13,146
PRPM LLC
5.385% due 10/25/2030 þ(m)	3,479	3,466
5.503% due 08/25/2030 þ(m)	3,462	3,453
6.469% due 05/25/2030 þ	860	858
PRPM Trust 6.255% due 05/25/2030 þ	798	797
RALI Trust
4.173% due 08/25/2036 •	218	226
4.253% due 05/25/2037 •	138	122
6.000% due 08/25/2036	214	187
6.000% due 05/25/2037	805	673
RBSSP Resecuritization Trust
4.013% due 10/27/2036 •	3,609	1,161
4.028% due 08/27/2037 •	8,000	3,847
Residential Asset Securitization Trust
5.750% due 02/25/2036	293	104
6.000% due 02/25/2037	1,475	603
6.250% due 09/25/2037	4,654	1,652
RFMSI Trust 4.851% due 02/25/2037 ~	1,221	794
SG Commercial Mortgage Securities Trust 2.937% due 03/15/2037 (m)	3,400	3,247
STARM Mortgage Loan Trust
5.604% due 04/25/2037 ~	120	61
5.644% due 02/25/2037 ~	115	100
6.115% due 02/25/2037 ~	728	678
Structured Adjustable Rate Mortgage Loan Trust
4.219% due 01/25/2036 ~	3,299	1,743
4.638% due 07/25/2035 ~	601	533
4.960% due 11/25/2036 ~	1,551	1,203
Structured Asset Mortgage Investments II Trust 3.913% due 08/25/2036 •	57	51
VASA Trust 4.687% due 07/15/2039 •(m)	1,000	983
Wachovia Mortgage Loan Trust LLC 1.746% due 08/25/2036 •	2,049	659
WaMu Mortgage Pass-Through Certificates Trust
3.707% due 10/25/2036 ~	424	378
3.817% due 07/25/2037 ~	318	287
3.996% due 02/25/2037 ~	394	343
4.647% due 07/25/2037 ~	670	616
Washington Mutual Mortgage Pass-Through Certificates Trust
4.699% due 05/25/2047 •	8	26
6.000% due 10/25/2035	738	591
6.000% due 03/25/2036	787	777
6.000% due 02/25/2037	2,117	1,810
Wells Fargo Commercial Mortgage Trust 5.204% due 09/15/2040 ~	500	498
Worldwide Plaza Trust 3.526% due 11/10/2036	5,815	4,648
WSTN Trust
7.690% due 07/05/2037 ~(m)	3,700	3,732
8.455% due 07/05/2037 ~(m)	3,700	3,704
9.835% due 07/05/2037 ~	3,000	3,015

Total Non-Agency Mortgage-Backed Securities (Cost $205,640)		174,120

ASSET-BACKED SECURITIES 6.2%
AUTOMOBILE ABS OTHER 0.3%
Ally Bank Auto Credit-Linked Notes
6.066% due 06/15/2033	3,471	3,482
6.942% due 06/15/2033	923	922
10.219% due 06/15/2033	2,621	2,637

		7,041

CMBS OTHER 0.0%
LNR CDO III Ltd. 4.069% due 02/28/2043 •	3,114	0


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


N-Star REL CDO VIII Ltd. 4.199% due 02/01/2041 •	220	0

		0

HOME EQUITY OTHER 3.3%
ABFC Trust
4.738% due 07/25/2034 •	61	61
4.768% due 06/25/2035 •	929	893
4.843% due 03/25/2035 •	67	60
4.963% due 03/25/2035 •	117	93
ACE Securities Corp. Home Equity Loan Trust
4.498% due 05/25/2035 •	1	1
4.783% due 05/25/2035 •	297	244
Aegis Asset-Backed Securities Trust
4.513% due 08/25/2035 •	18	18
4.753% due 08/25/2035 •	700	127
4.768% due 06/25/2035 •	900	286
Ameriquest Mortgage Securities, Inc. Asset-Backed Pass-Through Certificates
4.708% due 09/25/2035 •	313	317
4.738% due 11/25/2035 •	400	357
4.738% due 01/25/2036 •	1,100	1,044
4.768% due 05/25/2035 •	237	233
4.813% due 01/25/2036 •	1,100	988
5.143% due 03/25/2033 •	24	23
5.713% due 09/25/2034 •	2,723	2,156
Argent Securities, Inc. Asset-Backed Pass-Through Certificates 4.483% due 01/25/2036 •	333	364
Asset-Backed Securities Corp. Home Equity Loan Trust
4.693% due 11/25/2035 •	700	682
4.798% due 04/25/2035 •	7	8
4.813% due 05/25/2035 •	184	182
4.873% due 04/25/2035 •	300	280
Bear Stearns Asset-Backed Securities I Trust
4.813% due 04/25/2035 •	361	364
4.813% due 10/25/2035 •	123	123
4.873% due 12/25/2035 •	799	806
Citigroup Mortgage Loan Trust, Inc. 4.768% due 10/25/2035 •	683	498
Countrywide Asset-Backed Certificates
4.783% due 05/25/2035 •	31	31
4.888% due 05/25/2035 •	136	135
Countrywide Asset-Backed Certificates Trust
4.138% due 05/25/2037 •	7,847	6,668
4.889% due 05/25/2036 •	256	207
4.903% due 08/25/2035 •	142	141
5.236% due 07/25/2035 ~	7,025	5,551
Encore Credit Receivables Trust
4.528% due 07/25/2035 •	79	75
4.843% due 07/25/2035 •	232	208
FBR Securitization Trust
4.723% due 09/25/2035 •	1,900	1,732
4.768% due 11/25/2035 •	1,000	602
Fremont Home Loan Trust
4.093% due 01/25/2037 •	4,797	2,198
4.273% due 02/25/2036 •	12,788	9,459
4.468% due 01/25/2036 •	1,400	1,205
4.753% due 04/25/2035 •	1,300	1,161
4.858% due 06/25/2035 •(m)	116	116
GSAA Home Equity Trust 4.193% due 03/25/2037 •	961	260
GSAMP Trust
4.073% due 12/25/2036 •	1,148	613
4.193% due 01/25/2047 •	246	124
Home Equity Mortgage Loan Asset-Backed Trust
4.113% due 07/25/2037 •	2,218	1,238
4.498% due 03/25/2036 •	302	237
JP Morgan Mortgage Acquisition Trust 6.330% due 07/25/2036 þ	91	23
Long Beach Mortgage Loan Trust
4.708% due 08/25/2035 •	1,000	930
4.918% due 04/25/2035 •	1,900	1,872
8.293% due 10/25/2034 •	3,608	3,244
MASTR Asset-Backed Securities Trust
4.693% due 10/25/2035 •	400	376
4.768% due 05/25/2035 •	19	21
4.798% due 03/25/2035 •	392	396
4.813% due 03/25/2035 •	208	170
4.843% due 05/25/2035 •	400	402
4.873% due 03/25/2035 •	479	460
Merrill Lynch Mortgage Investors Trust
3.813% due 03/25/2037 þ	5,701	1,059
4.113% due 04/25/2037 •	1,260	569
4.738% due 02/25/2036 •	145	146
4.828% due 02/25/2036 •	80	79


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


Morgan Stanley ABS Capital I, Inc. Trust
3.943% due 10/25/2036 •		5,061	2,641
4.828% due 03/25/2035 •		253	234
4.888% due 01/25/2035 •		261	234
Morgan Stanley Mortgage Loan Trust 6.250% due 02/25/2037 ~		1,943	1,088
New Century Home Equity Loan Trust
4.438% due 12/25/2035 •		287	279
4.468% due 12/25/2035 •		573	518
4.573% due 03/25/2035 •		148	148
4.738% due 06/25/2035 •		114	123
4.768% due 06/25/2035 •		291	292
4.813% due 06/25/2035 •		366	384
4.918% due 03/25/2035 •		222	223
Nomura Home Equity Loan, Inc. Home Equity Loan Trust 4.708% due 05/25/2035 •		525	424
Park Place Securities, Inc. Asset-Backed Pass-Through Certificates 4.009% due 07/25/2035 •		400	359
People's Choice Home Loan Securities Trust 4.768% due 05/25/2035 •		300	217
Renaissance Home Equity Loan Trust
5.612% due 04/25/2037 þ		11,496	2,796
7.238% due 09/25/2037 þ		7,467	2,841
Residential Asset Securities Corporation Trust 4.738% due 12/25/2035 •		538	454
Securitized Asset-Backed Receivables LLC Trust 4.213% due 03/25/2036 •		12,205	11,840
Soundview Home Loan Trust 4.768% due 11/25/2035 •		366	364
Structured Asset Investment Loan Trust 4.768% due 06/25/2035 •		3,780	3,453

			80,828

HOME EQUITY SEQUENTIAL 0.0%
Structured Asset Securities Corp. Mortgage Loan Trust 5.593% due 08/25/2037 •		0	1

			1

WHOLE LOAN COLLATERAL 1.5%
Bear Stearns Asset-Backed Securities I Trust 4.193% due 04/25/2037 •		5,930	5,080
First Franklin Mortgage Loan Trust
4.113% due 10/25/2036 •		2,450	1,610
4.843% due 03/25/2035 •		661	637
Opteum Mortgage Acceptance Corp. Asset-Backed Pass-Through Certificates 4.843% due 04/25/2035 •		81	81
Pretium Mortgage Credit Partners LLC
5.151% due 02/25/2056 þ		2,443	2,425
5.184% due 11/25/2055 þ		3,096	3,077
5.193% due 10/25/2055 þ(m)		5,083	5,087
5.265% due 12/25/2055 þ		968	963
5.342% due 12/25/2055 þ(m)		6,132	6,114
5.391% due 08/25/2055 þ(m)		3,157	3,162
5.510% due 04/25/2056 þ		3,800	3,803
6.244% due 05/25/2055 þ		1,181	1,183
6.368% due 04/25/2055 þ		847	849
RCO X Mortgage LLC 5.418% due 10/25/2030 þ		1,741	1,738
Securitized Asset-Backed Receivables LLC Trust 4.768% due 12/25/2034 •		129	113
VCAT LLC 5.101% due 01/25/2056 þ		943	939

			36,861

OTHER ABS 1.1%
Adagio VI CLO DAC 0.000% due 04/30/2031 ~	EUR	1,343	336
Apidos CLO XXVIII 0.000% due 10/20/2038 ~	$	10,135	2,903
Belle Haven ABS CDO Ltd. 7.000% due 07/05/2046 •		324,260	709
Carlyle Global Market Strategies CLO Ltd. 0.000% due 04/17/2031 ~		6,000	64
CIFC Funding Ltd.
0.000% due 04/24/2030 ~		4,100	448
0.000% due 03/31/2038 ~		2,441	1,251
Cork Street CLO DAC 0.000% due 11/27/2028 ~	EUR	700	99
Crown City CLO II 0.000% due 04/20/2035 ~	$	1,600	448
Dryden 58 CLO Ltd. 0.000% due 07/17/2031 ~		14,311	86


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


Glacier Funding CDO III Ltd. 7.020% due 08/04/2035 •		7,164	454
GreenSky Home Improvement Issuer Trust
5.870% due 06/25/2059		672	681
6.360% due 06/25/2059		373	380
Man GLG U.S. CLO Ltd. 0.000% due 07/15/2034 ~		1,100	391
Marble Point CLO XXIII Ltd. 0.000% due 01/22/2052 ~		5,200	1,433
Marlette Funding Trust 0.000% due 09/17/2029 «(g)		15	0
Pagaya AI Debt Selection Trust 3.270% due 05/15/2029		610	603
SLM Student Loan EDC Repackaging Trust 0.000% due 10/28/2029 «(g)		8	2,567
SLM Student Loan Trust 0.000% due 01/25/2042 «(g)		7	1,298
SMB Private Education Loan Trust
0.000% due 09/18/2046 «(g)		3	650
0.000% due 10/15/2048 «(g)		3	749
South Coast Funding V Ltd. 4.977% due 08/06/2039 •		1,077	327
Taberna Preferred Funding V Ltd. 4.305% due 08/05/2036 •		5,119	4,812
Taberna Preferred Funding VI Ltd. 4.285% due 12/05/2036 •		6,465	6,012

			26,701

Total Asset-Backed Securities (Cost $224,256)			151,432

SOVEREIGN ISSUES 11.4%
Angola Government International Bonds
8.000% due 11/26/2029		6,590	6,525
8.250% due 05/09/2028		10,100	10,198
9.375% due 03/31/2033		10,200	10,103
9.875% due 03/31/2037		10,100	10,007
Argentina Bonar Bonds 0.750% due 07/09/2030 þ		6,840	5,560
Argentina Republic Government International Bonds
1.000% due 07/09/2029 (m)		946	832
3.500% due 07/09/2041 þ(m)		17,491	11,736
4.125% due 07/09/2046 þ		107	74
5.000% due 01/09/2038 þ(m)		22,691	17,154
Avenir Issuer IV Ireland DAC 6.000% due 10/25/2027		2,240	2,171
Colombia Government International Bonds
1.000% due 03/26/2031	COP	651,300	137
3.750% due 09/19/2028 (m)	EUR	1,200	1,360
5.000% due 09/19/2032 (m)		1,000	1,091
5.375% due 01/21/2029 (m)	$	4,100	4,067
5.625% due 02/19/2036 (m)	EUR	1,200	1,271
6.125% due 01/21/2031 (m)	$	1,200	1,182
Colombia TES
1.000% due 08/22/2029	COP	1,065,200	268
1.000% due 11/28/2040		500	0
9.250% due 05/28/2042		290,000	59
11.000% due 08/22/2029		5,975,200	1,507
11.500% due 07/25/2046		2,302,200	555
11.750% due 01/24/2035		177,173,900	43,928
12.000% due 03/13/2058		1,000	0
12.750% due 11/28/2040		5,767,800	1,529
Costa Rica Government International Bonds 5.500% due 11/21/2030 (m)	EUR	3,250	3,845
Development Bank of Kazakhstan JSC 18.400% due 10/16/2028	KZT	869,100	1,869
Dominican Republic International Bonds
10.500% due 03/15/2037 (m)	DOP	999,800	17,167
10.750% due 06/01/2036 (m)		94,250	1,639
10.750% due 06/01/2036		51,400	894
11.250% due 09/15/2035		45,950	821
Egypt Government Bonds 19.698% due 10/14/2030	EGP	2,172,700	39,138
El Salvador Government International Bonds 8.625% due 02/28/2029 (m)	$	4,400	4,594
Ghana Government International Bonds
0.000% due 07/03/2026 (g)		29	28
0.000% due 01/03/2030 (g)		120	101
5.000% due 07/03/2029 þ		762	729
Peru Government International Bonds
6.900% due 08/12/2037	PEN	4,600	1,314
6.950% due 08/12/2031		6,881	2,145
Republic of Kenya Government International Bonds
7.875% due 02/26/2034 (m)	$	6,600	6,008
8.700% due 02/26/2039		6,600	5,990
Romania Government International Bonds
5.125% due 09/24/2031 (m)	EUR	2,580	2,962


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


5.375% due 03/22/2031 (m)		2,540	2,960
5.375% due 06/07/2033 (m)		2,700	3,042
5.875% due 07/11/2032 (m)		8,300	9,732
6.750% due 07/11/2039 (m)		2,000	2,312
Russia Foreign Bonds - Eurobond
5.625% due 04/04/2042	$	13,400	9,380
5.875% due 09/16/2043		200	137
Turkiye Government Bonds
39.740% (BISTREFI) due 05/20/2026 ~	TRY	700	16
39.740% (BISTREFI) due 08/19/2026 ~		500	11
39.740% (BISTREFI) due 05/17/2028 ~(m)		98,200	2,202
40.299% (BISTREFI) due 09/06/2028 ~(m)		490,700	10,998
Ukraine Government International Bonds
0.000% due 02/01/2030 þ(i)	$	766	451
0.000% due 02/01/2034 þ(i)		2,861	1,233
0.000% due 02/01/2035 þ(i)		2,418	1,122
0.000% due 02/01/2036 þ(i)(m)		2,015	933
4.500% due 02/01/2029 þ(m)		3,298	2,325
4.500% due 02/01/2034 þ		3,769	2,020
4.500% due 02/01/2035 þ		3,287	1,729
4.500% due 02/01/2036 þ		3,663	1,890
Venezuela Government International Bonds
6.000% due 12/09/2049 ^(d)		490	189
9.250% due 09/15/2027 ^(d)		3,898	1,871
9.250% due 05/07/2028 ^(d)		2,600	1,196
11.950% due 08/05/2031 ^(d)		1,500	772

Total Sovereign Issues (Cost $275,577)			277,079

		SHARES
COMMON STOCKS 5.0%
COMMUNICATION SERVICES 0.6%
Clear Channel Outdoor Holdings, Inc. (e)		1,167,686	2,768
iHeartMedia, Inc. Class A (e)		275,106	803
iHeartMedia, Inc. Class B «(e)		213,502	549
Promotora de Informaciones SA Class A (e)		1,233,318	428
SES SA «(e)		460,477	6,907
Uniti Group, Inc. (e)		255,797	2,399

			13,854

CONSUMER DISCRETIONARY 0.0%
Steinhoff International Holdings NV «(e)(l)		97,336,701	0
West Marine «(e)(l)		13,000	82

			82

FINANCIALS 0.8%
Banca Monte dei Paschi di Siena SpA		2,152,500	18,782
UBS Group AG		4,114	160
XBP Global Holdings, Inc. (e)		1,223	5

			18,947

HEALTH CARE 2.3%
AmSurg Corp. «(e)(l)		1,271,774	55,926

INDUSTRIALS 1.3%
Drillco Holdings Luxembourg SA «(l)		76,260	1,754
Foresea Holdings SA «		31,696	729
Incora New Equity «(e)(l)		704,040	26,665
Luxco Co. Ltd. «(e)(l)		126,819	2,345
Mcdermott International Ltd. (e)		461	11
Westmoreland Mining Holdings «(e)(l)		44,693	27
Westmoreland Mining LLC «(e)(l)		45,087	192

			31,723

REAL ESTATE 0.0%
Country Garden Holdings Co. Ltd. (e)		200,965	8
MNSN Holdings, Inc. «(e)(l)		8,724	541

			549

Total Common Stocks (Cost $118,377)			121,081

WARRANTS 0.1%
COMMUNICATION SERVICES 0.1%
Windstream Holdings II LLC - Exp. 08/01/2035		275,876	2,585


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)



CONSUMER DISCRETIONARY 0.0%
West Marine - Exp. 09/08/2028 «		1,687	0

Total Warrants (Cost $1,680)			2,585

PREFERRED SECURITIES 2.0%
BANKING & FINANCE 1.4%
ADLER Group SA «		3,916,182	0
AGFC Capital Trust I 5.684% (US0003M + 1.750%) due 01/15/2067 ~(m)		1,800,000	1,127
Brighthouse Holdings LLC 6.500% due 07/27/2037 þ(j)		110,000	94
Compeer Financial ACA 4.875% due 08/15/2026 •(j)		4,400,000	4,352
WAFC Voussoir «		19,262,485	19,263
Windstream Holdings II LLC 11.000% «		9,034	9,614

			34,450

INDUSTRIALS 0.6%
Clover Holdings, Inc. 0.000% «(l)		37,854	716
SVB Financial Trust
0.000% due 11/07/2032 (g)		51,920	3
11.000% due 11/07/2032		9,947	4,700
Syniverse Holdings, Inc. 12.500% «(l)		7,175,071	6,037
Venture Global LNG, Inc. 9.000% due 09/30/2029 •(j)		1,660,000	1,654

			13,110

Total Preferred Securities (Cost $48,685)			47,560

REAL ESTATE INVESTMENT TRUSTS 0.2%
REAL ESTATE 0.2%
VICI Properties, Inc.		210,228	5,744

Total Real Estate Investment Trusts (Cost $1,514)			5,744

SHORT-TERM INSTRUMENTS 2.8%
MUTUAL FUNDS 0.0%
State Street Institutional U.S. Government Money Market Fund, Premier Class 3.720% (k)		1,140,625	1,141

		PRINCIPAL AMOUNT (000s)
EGYPT TREASURY BILLS 0.0%
24.060% due 10/20/2026 (g)(h)	EGP	35,600	572

NIGERIA TREASURY BILLS 2.2%
20.606% due 01/14/2027 - 01/28/2027 (f)(g)	NGN	83,267,100	52,337

TURKEY TREASURY BILLS 0.0%
38.692% due 04/07/2026 (f)(g)	TRY	40,000	893

U.S. TREASURY BILLS 0.6%
3.660% due 04/07/2026 - 07/21/2026 (f)(g)(o)(q)	$	14,205	14,139

Total Short-Term Instruments (Cost $68,127)			69,082

Total Investments in Securities (Cost $3,251,796)			2,988,180

		SHARES
INVESTMENTS IN AFFILIATES 5.1%
COMMON STOCKS 0.5%
AFFILIATED INVESTMENTS 0.5%
Windstream Services LLC		1,416,163	13,283


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)



Total Common Stocks (Cost $8,639)			13,283

SHORT-TERM INSTRUMENTS 4.6%
CENTRAL FUNDS USED FOR CASH MANAGEMENT PURPOSES 4.6%
PIMCO Short-Term Floating NAV Portfolio III	11,502,681		112,025

Total Short-Term Instruments (Cost $112,028)			112,025

Total Investments in Affiliates (Cost $120,667)			125,308

Total Investments 128.0% (Cost $3,372,463)		$	3,113,488
Financial Derivative Instruments (n)(p) 0.1%(Cost or Premiums, net $(23,894))			2,171
Other Assets and Liabilities, net (28.1)%			(684,039)

Net Assets Applicable to Common Shareholders 100.0%		$	2,431,620


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)



NOTES TO SCHEDULE OF INVESTMENTS:

* A zero balance may reflect actual amounts rounding to less than one thousand.

¤	The geographical classification of foreign (non-U.S.) securities in this report, if any, are classified by the country of incorporation of a holding. In certain instances, a security's country of incorporation may be different from its country of economic exposure.
^	Security is in default.
«	Security valued using significant unobservable inputs (Level 3).
µ	All or a portion of this amount represents unfunded loan commitments. The interest rate for the unfunded portion will be determined at the time of funding.
~	Variable or Floating rate security. Rate shown is the rate in effect as of period end. Certain variable rate securities are not based on a published reference rate and spread, rather are determined by the issuer or agent and are based on current market conditions. Reference rate is as of reset date, which may vary by security. These securities may not indicate a reference rate and/or spread in their description.
•	Rate shown is the rate in effect as of period end. The rate may be based on a fixed rate, a capped rate or a floor rate and may convert to a variable or floating rate in the future. These securities do not indicate a reference rate and spread in their description.
þ	Coupon represents a rate which changes periodically based on a predetermined schedule or event. Rate shown is the rate in effect as of period end.
(a)	Security is an Interest Only ("IO") or IO Strip.
(b)	When-issued security.
(c)	Payment in-kind security.
(d)	Security is not accruing income as of the date of this report.
(e)	Security did not produce income within the last twelve months.
(f)	Coupon represents a weighted average yield to maturity.
(g)	Zero coupon security.
(h)	Coupon represents a yield to maturity.
(i)	Security becomes interest bearing at a future date.
(j)	Perpetual maturity; date shown, if applicable, represents next contractual call date.
(k)	Coupon represents a 7-Day Yield.
(l)	RESTRICTED SECURITIES:
Issuer Description				Acquisition Date					Cost						Market Value				Market Value as Percentage of Net Assets

AmSurg Corp.				11/02/2023 - 11/06/2023			$		53,141				$		55,926				2.30	%
Clover Holdings, Inc.				12/09/2024					568						716				0.03
Country Garden Holdings Co. Ltd.0.000% due 12/31/2031				12/31/2025					61						48				0.00
Drillco Holdings Luxembourg SA				06/08/2023					1,523						1,754				0.07
Incora New Equity				01/31/2025					34,199						26,665				1.10
Incora Top Holdco LLC 6.000% due 01/30/2033				01/31/2025 - 01/31/2026					16,034						24,284				1.00
Luxco Co. Ltd.				10/01/2025					2,231						2,345				0.10
MNSN Holdings, Inc.				03/16/2023 - 03/29/2023					97						541				0.02
Steinhoff International Holdings NV				06/30/2023 - 10/30/2023					0						0				0.00
Syniverse Holdings, Inc.				05/12/2022 - 11/30/2025					7,082						6,037				0.25
West Marine				09/12/2023					187						82				0.00
Westmoreland Mining Holdings				07/29/2015 - 03/26/2019					1,161						27				0.00
Westmoreland Mining LLC				06/30/2023					299						192				0.01

						$		116,583				$		118,617				4.88%

BORROWINGS AND OTHER FINANCING TRANSACTIONS
REVERSE REPURCHASE AGREEMENTS:
Counterparty		Borrowing Rate	Settlement Date		Maturity Date						Amount Borrowed(1)						Payable for Reverse Repurchase Agreements

BPS		(0.500)%	01/26/2026		TBD(2)					EUR	(683)					$	(791)
		2.250	02/26/2026		TBD(2)						(2,315)						(2,682)
		2.270	01/30/2026		TBD(2)						(5,935)						(6,887)
		2.340	01/30/2026		TBD(2)						(16,965)						(19,688)
		3.600	03/05/2026		TBD(2)					$	(4,004)						(4,013)
		4.173	03/26/2026		06/26/2026					GBP	(11,451)						(15,167)
BRC		1.400	02/24/2026		TBD(2)					EUR	(4,183)						(4,842)
		1.550	02/03/2026		TBD(2)						(554)						(642)
		1.550	03/17/2026		TBD(2)						(2,003)						(2,316)
		2.250	01/30/2026		TBD(2)						(10,988)						(12,748)
		3.000	12/19/2025		TBD(2)					$	(2,385)						(2,406)
		3.250	12/19/2025		TBD(2)					GBP	(1,200)						(1,603)


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


	4.000	02/03/2026	TBD(2)	$	(5,896)	(5,933)
BYR	4.130	03/16/2026	06/16/2026		(24,998)	(25,044)
	4.130	03/23/2026	06/16/2026		(4,540)	(4,545)
CDC	4.030	03/10/2026	07/08/2026		(10,029)	(10,054)
	4.030	03/23/2026	07/21/2026		(1,287)	(1,288)
	4.080	02/25/2026	04/28/2026		(697)	(700)
	4.120	03/17/2026	04/02/2026		(1,872)	(1,875)
	4.130	03/10/2026	04/15/2026		(329)	(329)
	4.130	03/10/2026	07/08/2026		(8,594)	(8,616)
	4.130	03/23/2026	07/21/2026		(17,461)	(17,479)
	4.130	03/26/2026	07/21/2026		(2,910)	(2,912)
	4.130	03/30/2026	07/21/2026		(9,479)	(9,481)
	4.140	03/02/2026	06/01/2026		(41,053)	(41,194)
	4.140	03/03/2026	06/01/2026		(2,089)	(2,096)
	4.140	03/17/2026	06/01/2026		(168)	(168)
	4.160	03/10/2026	04/02/2026		(1,616)	(1,620)
	4.170	03/02/2026	04/02/2026		(8,495)	(8,525)
	4.180	01/28/2026	04/28/2026		(1,028)	(1,035)
CEW	4.120	02/26/2026	05/27/2026		(47,264)	(47,448)
DBL	3.950	03/18/2026	TBD(2)		(15,204)	(15,224)
	4.100	03/06/2026	04/06/2026		(16,469)	(16,518)
	4.120	03/13/2026	05/08/2026		(19,284)	(19,326)
	4.135	03/20/2026	06/26/2026		(1,955)	(1,958)
	4.235	03/20/2026	06/26/2026		(3,218)	(3,222)
	4.335	03/20/2026	06/26/2026		(3,163)	(3,167)
DEU	3.900	03/12/2026	04/13/2026		(14,821)	(14,854)
	4.050	03/12/2026	04/13/2026		(1,565)	(1,568)
IND	4.080	02/12/2026	05/13/2026		(202)	(203)
	4.080	03/26/2026	05/13/2026		(198)	(198)
	4.090	03/26/2026	06/04/2026		(354)	(355)
	4.110	03/17/2026	06/16/2026		(3,260)	(3,265)
	4.140	02/12/2026	05/13/2026		(55)	(55)
	4.150	02/27/2026	04/08/2026		(2,518)	(2,528)
	4.160	03/16/2026	06/16/2026		(1,017)	(1,019)
	4.190	01/16/2026	04/15/2026		(25,640)	(25,863)
	4.190	03/06/2026	04/15/2026		(1,111)	(1,114)
	4.190	03/10/2026	04/15/2026		(9,276)	(9,300)
	4.190	03/11/2026	04/15/2026		(29)	(29)
	4.190	03/26/2026	04/15/2026		(2,038)	(2,040)
JML	1.500	03/26/2026	TBD(2)	EUR	(250)	(289)
MBC	2.180	01/30/2026	TBD(2)		(3,108)	(3,606)
	2.200	02/27/2026	TBD(2)		(2,946)	(3,412)
	2.250	01/30/2026	TBD(2)		(2,511)	(2,913)
MYI	1.400	03/24/2026	TBD(2)		(3,163)	(3,658)
	2.750	01/15/2026	TBD(2)	$	(275)	(277)
	3.250	12/12/2025	TBD(2)		(1,771)	(1,789)
	3.250	12/19/2025	TBD(2)	GBP	(5,998)	(8,013)
	3.300	12/29/2025	TBD(2)		(629)	(840)
NOM	3.950	03/05/2026	TBD(2)	$	(4,787)	(4,801)
	4.000	03/05/2026	TBD(2)		(28,402)	(28,487)
RDR	4.000	12/18/2025	TBD(2)		(989)	(1,000)
RTA	4.155	02/20/2026	08/20/2026		(12,125)	(12,182)
	4.155	03/02/2026	09/02/2026		(11,011)	(11,050)
	4.155	03/10/2026	09/02/2026		(628)	(629)
	4.155	03/26/2026	08/20/2026		(1,075)	(1,075)
	4.155	03/26/2026	09/18/2026		(821)	(822)
	4.380	03/05/2026	05/04/2026		(12,421)	(12,462)
	4.430	03/05/2026	05/04/2026		(3,863)	(3,876)
SCX	4.020	03/03/2026	04/02/2026		(5,737)	(5,755)
	4.050	02/17/2026	TBD(2)		(12,536)	(12,597)
	4.100	03/03/2026	TBD(2)		(1,549)	(1,554)
SOG	2.110	01/28/2026	TBD(2)	EUR	(1,785)	(2,071)
	2.110	01/29/2026	TBD(2)		(2,664)	(3,090)
	2.110	02/20/2026	TBD(2)		(2,149)	(2,489)
	2.110	02/26/2026	TBD(2)		(2,529)	(2,929)
	2.120	01/23/2026	TBD(2)		(6,911)	(8,021)
	2.180	02/26/2026	TBD(2)		(228)	(264)
	2.200	01/30/2026	TBD(2)		(11,139)	(12,923)
	2.200	03/04/2026	TBD(2)		(3,782)	(4,379)
	2.220	02/27/2026	TBD(2)		(7,084)	(8,205)
	4.090	01/15/2026	04/09/2026	$	(3,617)	(3,648)
	4.090	02/03/2026	05/04/2026		(1,164)	(1,172)
	4.090	02/20/2026	05/04/2026		(1,175)	(1,180)
	4.100	01/21/2026	04/16/2026		(598)	(603)
	4.190	01/08/2026	04/08/2026		(2,730)	(2,757)
	4.190	03/17/2026	04/07/2026		(729)	(730)
	4.210	02/03/2026	04/02/2026		(13,864)	(13,956)
	4.210	02/03/2026	05/04/2026		(23,948)	(24,108)
	4.210	03/10/2026	05/04/2026		(13,209)	(13,243)
	4.210	04/02/2026	05/04/2026		(5,942)	(5,942)
	4.220	01/16/2026	04/16/2026		(18,779)	(18,945)
	4.220	03/02/2026	04/16/2026		(19,664)	(19,733)
TDM	3.850	12/12/2025	TBD(2)		(440)	(445)
	3.930	12/12/2025	TBD(2)		(7,352)	(7,441)
	3.930	03/30/2026	TBD(2)		(7,527)	(7,529)
UBS	2.070	02/06/2026	TBD(2)	EUR	(2,591)	(3,005)


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


										2.190						02/27/2026											TBD(2)										(4,935)								(5,715)
										2.220						02/26/2026											TBD(2)										(3,231)								(3,743)
										2.329						03/27/2026											06/29/2026										(32,651)								(37,752)
										2.436						03/06/2026											06/08/2026										(5,605)								(6,490)

Total Reverse Repurchase Agreements																																												$	(729,528)

(m)	Securities with an aggregate market value of $795,496 and cash of $14,557 have been pledged as collateral under the terms of master agreements as of March 31, 2026.
(1)	The average amount of borrowings outstanding during the period ended March 31, 2026 was $(419,079) at a weighted average interest rate of 4.072%. Average borrowings may include reverse repurchase agreements and sale-buyback transactions, if held during the period.
(2)	Open maturity reverse repurchase agreement.
(n)	FINANCIAL DERIVATIVE INSTRUMENTS: EXCHANGE-TRADED OR CENTRALLY CLEARED
SWAP AGREEMENTS:
CREDIT DEFAULT SWAPS ON CORPORATE ISSUES - SELL PROTECTION(1)
																				Variation Margin
Reference Entity			Fixed Receive Rate	Payment Frequency		Maturity Date		Implied Credit Spread at March 31, 2026(2)							Notional Amount(3)						Premiums Paid/ (Received)							Unrealized Appreciation/ (Depreciation)						Market Value(4)							Asset								Liability

AT&T, Inc.			1.000%	Quarterly		06/20/2028		0.395			%		$		900		$				(9)			$				21			$			12				$			0					$			0
Boeing Co.			1.000	Quarterly		06/20/2026		0.213							1,400						5							(2)						3							0								0
Boeing Co.			1.000	Quarterly		12/20/2029		0.587							600						0							9						9							0								0
Boeing Co.			1.000	Quarterly		12/20/2030		0.712							20,300						315							(57)						258							9								0
Morgan Stanley			1.000	Quarterly		06/20/2026		0.303							1,600						6							(3)						3							0								0
Oracle Corp.			1.000	Quarterly		06/20/2030		1.622							3,700						81							(167)						(86)							7								0
Stellantis NV			5.000	Quarterly		12/20/2030		1.874					EUR		200						38							(7)						31							1								0
Worldline SA/France			5.000	Quarterly		12/20/2027		10.088							1,200						(116)							13						(103)							0								(17)
Worldline SA/France			5.000	Quarterly		12/20/2028		10.418							200						(29)							3						(26)							0								(3)

																		$				291			$				(190)			$			101				$			17					$			(20)

INTEREST RATE SWAPS
																				Variation Margin
Pay/ Receive Floating Rate		Floating Rate Index			Fixed Rate		Payment Frequency		Maturity Date					Notional Amount									Premiums Paid/ (Received)							Unrealized Appreciation/ (Depreciation)						Market Value							Asset								Liability

Pay		1-Day GBP-SONIO Compounded-OIS			3.500%		Annual		03/18/2031			GBP		40,140					$				(853)			$				(858)			$			(1,711)				$			128					$			0
Receive		1-Day GBP-SONIO Compounded-OIS			0.750		Annual		09/21/2032					15,700									1,524							2,895						4,419							0								(45)
Receive		1-Day GBP-SONIO Compounded-OIS			2.000		Annual		03/15/2033					8,000									891							557						1,448							0								(26)
Receive		1-Day GBP-SONIO Compounded-OIS			0.750		Annual		09/21/2052					3,900									800							2,432						3,232							0								(7)
Pay		1-Day USD-SOFR Compounded-OIS			2.250		Semi-Annual		06/15/2026			$		44,400									722							(669)						53							0								(4)
Receive		1-Day USD-SOFR Compounded-OIS			0.500		Semi-Annual		06/16/2026					35,000									328							(62)						266							4								0
Receive		1-Day USD-SOFR Compounded-OIS			1.360		Semi-Annual		02/15/2027					12,450									(2)							323						321							0								(1)
Pay		1-Day USD-SOFR Compounded-OIS			1.600		Semi-Annual		02/15/2027					49,800									(123)							(1,044)						(1,167)							5								0
Receive		1-Day USD-SOFR Compounded-OIS			1.450		Semi-Annual		02/17/2027					20,600									(5)							519						514							0								(2)
Pay		1-Day USD-SOFR Compounded-OIS			4.250		Annual		02/17/2027					90,000									(893)							1,370						477							21								0
Receive		1-Day USD-SOFR Compounded-OIS			1.420		Semi-Annual		02/24/2027					6,000									(2)							153						151							0								(1)
Pay		1-Day USD-SOFR Compounded-OIS			1.650		Semi-Annual		02/24/2027					19,900									(51)							(406)						(457)							2								0
Pay		1-Day USD-SOFR Compounded-OIS			2.500		Semi-Annual		12/20/2027					73,900									280							(1,631)						(1,351)							26								0
Pay		1-Day USD-SOFR Compounded-OIS			2.000		Annual		12/21/2027					83,700									(7,417)							4,719						(2,698)							35								0
Receive		1-Day USD-SOFR Compounded-OIS			1.420		Semi-Annual		08/17/2028					47,100									(11)							2,774						2,763							0								(22)
Receive		1-Day USD-SOFR Compounded-OIS			1.380		Semi-Annual		08/24/2028					71,000									(17)							4,243						4,226							0								(34)
Pay		1-Day USD-SOFR Compounded-OIS			3.750		Annual		12/20/2028					175,700									1,523							(753)						770							118								0
Pay		1-Day USD-SOFR Compounded-OIS			3.000		Semi-Annual		06/19/2029					263,700									8,727							(13,746)						(5,019)							187								0
Receive		1-Day USD-SOFR Compounded-OIS			3.750		Annual		06/20/2029					38,700									(732)							632						(100)							0								(33)


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


Pay		1-Day USD-SOFR Compounded-OIS	4.500	Annual	12/21/2029		384,000			353			12,730			13,083			382			0
Pay		1-Day USD-SOFR Compounded-OIS	3.250	Annual	06/18/2030		568,100			(5,582)			(5,737)			(11,319)			553			0
Receive		1-Day USD-SOFR Compounded-OIS	1.000	Semi-Annual	12/16/2030		3,600			(60)			504			444			0			(3)
Pay		1-Day USD-SOFR Compounded-OIS	3.500	Annual	03/18/2031		330,360			2,355			(4,159)			(1,804)			347			0
Receive		1-Day USD-SOFR Compounded-OIS	1.160	Semi-Annual	04/12/2031		6,100			(1)			787			786			0			(6)
Receive		1-Day USD-SOFR Compounded-OIS	0.750	Semi-Annual	06/16/2031		19,700			1,152			1,780			2,932			0			(18)
Receive		1-Day USD-SOFR Compounded-OIS	1.750	Semi-Annual	12/15/2031		97,600			(1,365)			11,967			10,602			0			(90)
Receive		1-Day USD-SOFR Compounded-OIS	1.350	Semi-Annual	02/09/2032		128,200			870			17,081			17,951			0			(123)
Pay		1-Day USD-SOFR Compounded-OIS	2.000	Annual	12/21/2032		69,800			(9,546)			2,101			(7,445)			77			0
Receive		1-Day USD-SOFR Compounded-OIS	3.750	Annual	12/17/2035		28,110			(461)			695			234			0			(23)
Pay		1-Day USD-SOFR Compounded-OIS	3.500	Semi-Annual	06/19/2044		161,500			(4,025)			(14,178)			(18,203)			0			(206)
Receive		1-Day USD-SOFR Compounded-OIS	3.750	Annual	12/17/2045		17,610			341			654			995			32			0
Receive		1-Day USD-SOFR Compounded-OIS	2.250	Semi-Annual	12/11/2049		2,200			(3)			729			726			5			0
Receive		1-Day USD-SOFR Compounded-OIS	2.000	Semi-Annual	01/15/2050		19,800			(137)			7,610			7,473			47			0
Receive		1-Day USD-SOFR Compounded-OIS	1.750	Semi-Annual	01/22/2050		28,200			(69)			11,786			11,717			66			0
Receive		1-Day USD-SOFR Compounded-OIS	1.875	Semi-Annual	02/07/2050		29,300			(114)			11,706			11,592			69			0
Receive		1-Day USD-SOFR Compounded-OIS	2.250	Semi-Annual	03/12/2050		9,800			(29)			3,338			3,309			23			0
Receive		1-Day USD-SOFR Compounded-OIS	1.250	Semi-Annual	12/16/2050		17,000			1,539			6,871			8,410			42			0
Receive		1-Day USD-SOFR Compounded-OIS	1.700	Semi-Annual	02/01/2052		144,400			962			62,650			63,612			391			0
Pay		1-Year BRL-CDI	11.250	Maturity	01/04/2027	BRL	2,600			0			(38)			(38)			1			0
Pay		1-Year BRL-CDI	11.275	Maturity	01/04/2027		1,300			0			(19)			(19)			0			0
Pay		1-Year BRL-CDI	11.290	Maturity	01/04/2027		1,300			0			(19)			(19)			0			0
Pay		1-Year BRL-CDI	11.731	Maturity	01/04/2027		700			0			(8)			(8)			0			0
Pay		1-Year BRL-CDI	11.746	Maturity	01/04/2027		3,000			0			(32)			(32)			1			0
Pay		1-Year BRL-CDI	11.901	Maturity	01/04/2027		7,100			0			(67)			(67)			2			0
Receive		6-Month EUR-EURIBOR	0.150	Annual	03/18/2030	EUR	21,400			392			2,390			2,782			0			(73)
Receive		6-Month EUR-EURIBOR	0.250	Annual	09/21/2032		17,200			1,607			1,508			3,115			0			(94)
Receive		6-Month EUR-EURIBOR	1.750	Annual	03/15/2033		1,900			149			16			165			0			(11)
Receive		6-Month EUR-EURIBOR	0.500	Annual	09/21/2052		8,100			702			3,743			4,445			0			(51)
Receive(5)		6-Month EUR-EURIBOR	0.830	Annual	12/09/2052		39,800			480			4,435			4,915			48			0
Pay		Venture Global LNG, Inc.	5.000	Quarterly	12/20/2030	$	4,700			144			343			487			20			0
Pay		Worldline SA/France	5.000	Quarterly	12/20/2030	EUR	36,800			(6,007)			(1,656)			(7,663)			0			(543)

								$	(11,664)		$	140,959		$	129,295		$	2,632		$	(1,416)

Total Swap Agreements								$	(11,373)		$	140,769		$	129,396		$	2,649		$	(1,436)

(o)	Securities with an aggregate market value of $5,365 and cash of $66,299 have been pledged as collateral for exchange-traded and centrally cleared financial derivative instruments as of March 31, 2026.
(1)	If the Fund is a seller of protection and a credit event occurs, as defined under the terms of that particular swap agreement, the Fund will either (i) pay to the buyer of protection an amount equal to the notional amount of the swap and take delivery of the referenced obligation or underlying securities comprising the referenced index or (ii) pay a net settlement amount in the form of cash, securities or other deliverable obligations equal to the notional amount of the swap less the recovery value of the referenced obligation or underlying securities comprising the referenced index.
(2)	Implied credit spreads, represented in absolute terms, utilized in determining the market value of credit default swap agreements on corporate or sovereign issues as of period end serve as indicators of the current status of the payment/performance risk and represent the likelihood or risk of default for the credit derivative. The implied credit spread of a particular referenced entity reflects the cost of buying/selling protection and may include upfront payments required to be made to enter into the agreement. Wider credit spreads represent a deterioration of the referenced entity's credit soundness and a greater likelihood or risk of default or other credit event occurring as defined under the terms of the agreement.
(3)	The maximum potential amount the Fund could be required to pay as a seller of credit protection or receive as a buyer of credit protection if a credit event occurs as defined under the terms of that particular swap agreement.
(4)	The prices and resulting values for credit default swap agreements serve as indicators of the current status of the payment/performance risk and represent the likelihood of an expected liability (or profit) for the credit derivative should the notional amount of the swap agreement be closed/sold as of the period end. Increasing market values, in absolute terms when compared to the notional amount of the swap, represent a deterioration of the underlying referenced instrument's credit soundness and a greater likelihood or risk of default or other credit event occurring as defined under the terms of the agreement.
(5)	This instrument has a forward starting effective date.
(p)	FINANCIAL DERIVATIVE INSTRUMENTS: OVER THE COUNTER


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


FORWARD FOREIGN CURRENCY CONTRACTS:
						Unrealized Appreciation/(Depreciation)
Counterparty		Settlement Month		Currency to be Delivered				Currency to be Received						Asset						Liability

AZD		04/2026	CAD	753		$		549				$		8				$		0
BOA		04/2026	DOP	390,024				6,375						27						(37)
		04/2026	JPY	246,122				1,543						0						(8)
		04/2026	$	4,346		EUR		3,711						0						(57)
		05/2026	DOP	8,436		$		130						0						(9)
		05/2026	$	1,543		JPY		245,381						8						0
BPS		06/2026		87		IDR		1,459,994						0						(1)
		08/2030	KWD	163		$		550						13						0
		01/2031		6,025				20,303						445						0
BRC		04/2026	HKD	5,999				767						1						0
		04/2026	TRY	729,696				15,843						0						(257)
		04/2026	$	25,288		TRY		1,139,957						197						0
		05/2026	TRY	216,397		$		4,649						0						(23)
		05/2026	$	3,474		TRY		161,074						3						0
BSH		04/2026	JPY	1,360,395		$		8,522						0						(50)
		04/2026	$	44,443		GBP		33,386						0						(254)
		05/2026	GBP	33,386		$		44,442						254						0
		05/2026	$	8,522		JPY		1,356,296						50						0
CBK		04/2026	EUR	7,809		$		9,059						33						0
		04/2026	$	22,510		GBP		16,981						0						(34)
DUB		04/2026	HKD	29,112		$		3,721						5						0
		04/2026	$	127		AUD		185						1						0
		05/2026	AUD	185		$		127						0						(1)
		06/2026	KZT	75,401				146						0						(8)
FAR		04/2026	AUD	71				50						1						0
		04/2026	GBP	53,311				72,044						1,481						0
		04/2026	JPY	1,693,817				10,613						0						(60)
		04/2026	$	15,469		GBP		11,436						0						(333)
		04/2026		3,385		JPY		528,845						0						(52)
		05/2026		10,613				1,688,700						59						0
GLM		04/2026	DOP	284,604		$		4,409						0						(256)
		04/2026	KZT	50,781				104						0						(1)
		05/2026	DOP	327,030				5,263						40						(155)
		06/2026		42,713				696						0						(4)
		06/2026	$	233		MXN		4,158						0						(3)
		08/2026	DOP	50,832		$		812						0						(14)
		09/2026		38,796				614						0						(15)
IND		04/2026	EUR	330,439				390,178						8,239						0
JPM		04/2026		7,772				8,925						0						(59)
		04/2026	HKD	33,973				4,345						8						0
		04/2026	$	6,842		EUR		5,867						0						(61)
MBC		04/2026	GBP	282		$		378						4						0
		04/2026	JPY	523,585				3,274						0						(25)
		04/2026	$	5,094		EUR		4,397						0						(12)
		04/2026		3,747		JPY		582,618						0						(76)
		05/2026	EUR	2,748		$		3,164						0						(17)
		05/2026	JPY	3,870,000				24,326						0						(132)
		05/2026	$	3,274		JPY		522,003						25						0
NGF		04/2026		6,153		TRY		282,948						47						0
		05/2026		3,072				142,289						0						(1)
SCX		04/2026	GBP	8,210		$		10,896						29						0
		04/2026	$	544		CAD		753						0						(2)
		04/2026		2,666		JPY		415,916						0						(45)
		05/2026	CAD	752		$		544						3						0
SOG		04/2026	$	384,681		EUR		332,045						519						(1,405)
		04/2026		14,743		JPY		2,294,036						0						(289)
		05/2026	EUR	280,575		$		324,290						0						(507)
		06/2026	EGP	10,612				196						12						0
		06/2026	PEN	13,864				4,115						146						0
SSB		04/2026	AUD	114				81						3						0
		04/2026	$	17		JPY		2,689						0						0
UAG		04/2026	TRY	83,654		$		1,810						0						(32)
		05/2026		12,569				270						0						(2)
		06/2026	COP	186,386,514				49,041						0						(869)

Total Forward Foreign Currency Contracts						$			11,661				$		(5,166)

WRITTEN OPTIONS:
FOREIGN CURRENCY OPTIONS
Counterparty	Description						Strike Price			Expiration Date	Notional Amount(1)						Premiums (Received)				Market Value

UAG	Call - OTC USD versus TRY				TRY		49.510			04/15/2026	5,600					$	(89)		$		(14)
	Call - OTC USD versus TRY						49.650			04/17/2026	8,400						(129)				(29)
	Call - OTC USD versus TRY						49.650			04/21/2026	2,700						(40)				(13)
	Call - OTC USD versus TRY						49.600			04/24/2026	1,400						(21)				(8)


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


			Call - OTC USD versus TRY									49.990					05/01/2026						2,700							(41)									(21)

Total Written Options											$		(320)								$			(85)

SWAP AGREEMENTS:
CREDIT DEFAULT SWAPS ON CORPORATE AND SOVEREIGN ISSUES - SELL PROTECTION(2)
											Swap Agreements, at Value(5)
Counterparty		Reference Entity		Fixed Receive Rate	Payment Frequency		Maturity Date		Implied Credit Spread at March 31, 2026(3)										Notional Amount(4)						Premiums Paid/(Received)							Unrealized Appreciation/ (Depreciation)						Asset					Liability

BOA		Panama Government International Bonds		1.000%	Quarterly		12/20/2028		0.787%							$			8,500			$			(351)				$			401				$		50			$		0
BRC		Panama Government International Bonds		1.000	Quarterly		12/20/2028		0.787										9,500						(392)							447						55					0
		Petroleos Mexicanos		1.000	Quarterly		12/20/2030		3.124										400						(32)							(2)						0					(34)
CBK		Israel Government International Bonds		1.000	Quarterly		06/20/2027		0.387										2,000						(10)							25						15					0
		Petroleos Mexicanos		1.000	Quarterly		12/20/2030		3.124										1,700						(138)							(7)						0					(145)
DUB		Eskom «		4.650	Quarterly		06/30/2029		—◆										7,400						0							318						318					0
		Petroleos Mexicanos «		4.750	Monthly		07/06/2026		—◆										635						0							4						4					0
GST		Equinix, Inc.		5.000	Quarterly		06/20/2027		0.478										1,000						140							(84)						56					0
		Israel Government International Bonds		1.000	Quarterly		12/20/2029		0.663										900						(25)							36						11					0
		Nissan Motor Co. Ltd.		1.000	Quarterly		12/20/2030		2.738							JPY			53,300						(28)							3						0					(25)
		Soft Bank Group,Inc.		1.000	Quarterly		06/20/2026		1.662							$			3,500						(30)							26						0					(4)
JPM		Israel Government International Bonds		1.000	Quarterly		12/20/2029		0.663										200						(6)							8						2					0
		Nissan Motor Co. Ltd.		1.000	Quarterly		12/20/2030		2.738							JPY			53,300						(28)							3						0					(25)
		Petroleos Mexicanos		1.000	Quarterly		12/20/2030		3.124							$			2,600						(203)							(19)						0					(222)
MYC		Argentine Republic Government International Bonds		5.000	Quarterly		06/20/2026		2.371										400						5							(2)						3					0
		Israel Government International Bonds		1.000	Quarterly		12/20/2029		0.663										400						(10)							15						5					0
		Petroleos Mexicanos		1.000	Quarterly		12/20/2028		2.711										2,600						(507)							396						0					(111)
MYI		Turkiye Government International Bonds		1.000	Quarterly		12/20/2033		3.528										3,000						(597)							151						0					(446)

																						$			(2,212)				$			1,719				$		519			$		(1,012)

CREDIT DEFAULT SWAPS ON CREDIT INDEXES - SELL PROTECTION(2)
											Swap Agreements, at Value(5)
Counterparty		Index/Tranches				Fixed Receive Rate		Payment Frequency		Maturity Date								Notional Amount(4)						Premiums Paid/(Received)							Unrealized Appreciation/ (Depreciation)						Asset					Liability

BRC		ABX.HE.AAA.6-2 Index «				0.110%		Monthly		05/25/2046					$			15,789			$			(4,307)				$			3,043				$		0			$		(1,264)
GST		ABX.HE.AA.6-1 Index «				0.320		Monthly		07/25/2045								5,959						(283)							(218)						0					(501)
		ABX.HE.AAA.6-2 Index «				0.110		Monthly		05/25/2046								1,340						(362)							255						0					(107)
MEI		ABX.HE.AAA.6-2 Index «				0.110		Monthly		05/25/2046								18,458						(5,037)							3,559						0					(1,478)
MYI		ABX.HE.AAA.6-2 Index «				0.110		Monthly		05/25/2046								20,094						0							(1,609)						0					(1,609)

																						$			(9,989)				$			5,030				$		0			$		(4,959)

Total Swap Agreements											$			(12,201)					$	6,749						$	519						$	(5,971)

(q)	Securities with an aggregate market value of $8,540 have been pledged as collateral for financial derivative instruments as governed by International Swaps and Derivatives Association, Inc. master agreements as of March 31, 2026.
◆	Implied credit spread is not available due to significant unobservable inputs being used in the fair valuation.
(1)	Notional Amount represents the number of contracts.
(2)	If the Fund is a seller of protection and a credit event occurs, as defined under the terms of that particular swap agreement, the Fund will either (i) pay to the buyer of protection an amount equal to the notional amount of the swap and take delivery of the referenced obligation or underlying securities comprising the referenced index or (ii) pay a net settlement amount in the form of cash, securities or other deliverable obligations equal to the notional amount of the swap less the recovery value of the referenced obligation or underlying securities comprising the referenced index.
(3)	Implied credit spreads, represented in absolute terms, utilized in determining the market value of credit default swap agreements on corporate or sovereign issues as of period end serve as indicators of the current status of the payment/performance risk and represent the likelihood or risk of default for the credit derivative. The implied credit spread of a particular referenced entity reflects the cost of buying/selling protection and may include upfront payments required to be made to enter into the agreement. Wider credit spreads represent a deterioration of the referenced entity's credit soundness and a greater likelihood or risk of default or other credit event occurring as defined under the terms of the agreement.
(4)	The maximum potential amount the Fund could be required to pay as a seller of credit protection or receive as a buyer of credit protection if a credit event occurs as defined under the terms of that particular swap agreement.
(5)	The prices and resulting values for credit default swap agreements serve as indicators of the current status of the payment/performance risk and represent the likelihood of an expected liability (or profit) for the credit derivative should the notional amount of the swap agreement be closed/sold as of the period end. Increasing market values, in absolute terms when compared to the notional amount of the swap, represent a deterioration of the underlying referenced instrument's credit soundness and a greater likelihood or risk of default or other credit event occurring as defined under the terms of the agreement.
FAIR VALUE MEASUREMENTS


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


The following is a summary of the fair valuations according to the inputs used as of March 31, 2026 in valuing the Fund's assets and liabilities:

Category and Subcategory						Level 1				Level 2			Level 3			Fair Value at 03/31/2026

Investments in Securities, at Value
Loan Participations and Assignments						$	0			$	673,498		$	299,456		$		972,954
Corporate Bonds & Notes
	Banking & Finance						0				227,392			2,094				229,486
	Industrials						0				607,659			47,351				655,010
	Utilities						0				75,273			363				75,636
Convertible Bonds & Notes
	Banking & Finance						0				48			0				48
	Industrials						0				57,543			0				57,543
Municipal Bonds & Notes
	California						0				1,861			0				1,861
	Michigan						0				4,953			0				4,953
	West Virginia						0				7,312			0				7,312
U.S. Government Agencies							0				123,008			8,412				131,420
U.S. Treasury Obligations							0				3,274			0				3,274
Non-Agency Mortgage-Backed Securities							0				174,120			0				174,120
Asset-Backed Securities
	Automobile ABS Other						0				7,041			0				7,041
	Home Equity Other						0				80,828			0				80,828
	Home Equity Sequential						0				1			0				1
	Whole Loan Collateral						0				36,861			0				36,861
	Other ABS						0				21,437			5,264				26,701
Sovereign Issues							0				277,079			0				277,079
Common Stocks
	Communication Services						5,970				428			7,456				13,854
	Consumer Discretionary						0				0			82				82
	Financials						5				18,942			0				18,947
	Health Care						0				0			55,926				55,926
	Industrials						11				0			31,712				31,723
	Real Estate						0				8			541				549
Warrants
	Communication Services						0				2,585			0				2,585
Preferred Securities
	Banking & Finance						0				5,573			28,877				34,450
	Industrials						0				6,357			6,753				13,110
Real Estate Investment Trusts
	Real Estate						5,744				0			0				5,744
Short-Term Instruments
	Mutual Funds						0				1,141			0				1,141
	Egypt Treasury Bills						0				572			0				572
	Nigeria Treasury Bills						0				52,337			0				52,337
	Turkey Treasury Bills						0				893			0				893
	U.S. Treasury Bills						0				14,139			0				14,139

						$	11,730			$	2,482,163		$	494,287		$		2,988,180
Investments in Affiliates, at Value
Common Stocks
	Affiliated Investments						0				13,283			0				13,283
Short-Term Instruments
	Central Funds Used for Cash Management Purposes						112,025				0			0				112,025

						$	112,025			$	13,283		$	0		$		125,308

Total Investments						$	123,755			$	2,495,446		$	494,287		$		3,113,488

Financial Derivative Instruments - Assets
Exchange-traded or centrally cleared							0				2,649			0				2,649
Over the counter							0				11,858			322				12,180

						$	0			$	14,507		$	322		$		14,829
Financial Derivative Instruments - Liabilities
Exchange-traded or centrally cleared							0				(1,436)			0				(1,436)
Over the counter							0				(6,263)			(4,959)				(11,222)

						$	0			$	(7,699)		$	(4,959)		$		(12,658)

Total Financial Derivative Instruments						$	0			$	6,808		$	(4,637)		$		2,171

Totals						$	123,755			$	2,502,254		$	489,650		$		3,115,659




The following is a reconciliation of the fair valuations using significant unobservable inputs (Level 3) for the Fund during the period ended March 31, 2026:
Category and Subcategory		Beginning Balance at 06/30/2025	Net Purchases (1)	Net Sales/Settlements (1)	Accrued Discounts/ (Premiums)			Realized Gain/(Loss)	Net Change in Unrealized Appreciation/ (Depreciation) (2)			Transfers into Level 3			Transfers out of Level 3		Ending Balance at 03/31/2026		Net Change in Unrealized Appreciation/ (Depreciation) on Investments Held at 03/31/2026 (2)

Investments in Securities, at Value


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)


Loan Participations and Assignments		$	160,420		$		34,834		$			(42,126)	$	590	$		39	$		1,665	$	144,034	$	0			$	299,456	$		(159)
Corporate Bonds & Notes
	Banking & Finance			862			2,106					(101)		0			5			113		0		(891)				2,094			(12)
	Industrials			44,914			3,031					(4,206)		92			0			3,520		0		0				47,351			2,413
	Utilities			0			307					0		(4)			0			60		0		0				363			60
U.S. Government Agencies			8,490				0					(166)		28			55			5		0		0				8,412			1
Asset-Backed Securities
	Other ABS			6,139			0					0		9			(2,227)			1,343		0		0				5,264			(624)
Common Stocks
	Communication Services			23,486			0					(20,869)		0			11,074			(6,235)		0		0				7,456			7,125
	Consumer Discretionary			82			0					0		0			0			0		0		0				82			0
	Financials			15,885			0					(16,276)		0			(15,135)			15,526		0		0				0			0
	Health Care			57,417			0					0		0			0			(1,491)		0		0				55,926			(1,491)
	Industrials			26,133			7,894					(5,751)		0			88			3,348		0		0				31,712			3,348
	Real Estate			35			0					0		0			0			506		0		0				541			506
Warrants
	Communication Services			4,604			0					(4,150)		0			1,096			(1,550)		0		0				0			0
	Financials			3			0					(16)		0			(10,148)			10,161		0		0				0			0
Preferred Securities
	Banking & Finance			0			28,296					0		0			0			581		0		0				28,877			581
	Industrials			7,061			422					0		0			0			(730)		0		0				6,753			(730)

		$	355,531		$		76,890		$			(93,661)	$	715	$		(15,153)	$		26,822	$	144,034	$	(891)			$	494,287	$		11,018
Financial Derivative Instruments- Assets
Over the counter		$	450		$		0		$			(5)	$	0	$		0	$		(123)	$	0	$	0			$	322	$		(125)

Financial Derivative Instruments- Liabilities
Over the counter		$	(5,264)		$		374		$			(117)	$	0	$		3,590	$		(3,542)	$	0	$	0			$	(4,959)	$		(1,731)

Totals		$	351,717		$		77,264		$			(93,783)	$	715	$		(11,563)	$		23,157	$	144,034	$	(891)			$	489.650	$		9,162

The following is a summary of significant unobservable inputs used in the fair valuations of assets and liabilities categorized within Level 3 of the fair value hierarchy:
																(% Unless Noted Otherwise)

Category and Subcategory						Ending Balance at 03/31/2026				Valuation Technique									Unobservable Inputs							Input Value(s)				Weighted Average

Investments in Securities, at Value
Loan Participations and Assignments						$		26,221			Comparable Companies								EBITDA Multiple						X	16.360				—
								110,217			Discounted Cash Flow								Discount Rate							6.312 – 9.745				8.305
								11,640			Indicative Market Quotation								Broker Quote							101.250				—
								6,300			Recent Transaction								Purchase Price							100.000				—
								145,078			Third Party Vendor								Broker Quote							43.500 – 122.000				101.750
Corporate Bonds & Notes
	Banking & Finance							2,094			Discounted Cash Flow								Discount Rate							6.918				—
	Industrials							47,351			Comparable Companies / Discounted Cash Flow								EBITDA Multiple/Discount Rate						X/ %	12.500/10.000				—
	Utilities							363			Indicative Market Quotation								Broker Quote						EUR	12.000				—
U.S. Government Agencies								8,412			Discounted Cash Flow								Discount Rate							11.670				—
Asset-Backed Securities
	Other ABS							5,264			Discounted Cash Flow								Discount Rate							12.000 – 20.000				—
Common Stocks
	Communication Services							6,907			Indicative Market Quotation								Broker Quote						$	15.000				—
								549			Reference Instrument								Liquidity Discount							12.000				—
	Consumer Discretionary							82			Comparable Companies / Discounted Cash Flow								Revenue Multiple / Discount Rate						X / %	0.500 / 20.750				—
	Health Care							55,926			Comparable Companies								EBITDA Multiple						X	16.360				—
	Industrials							26,665			Comparable Companies / Discounted Cash Flow								EBITDA Multiple/Discount Rate						X/ %	12.500/10.000				—
								2,702			Indicative Market Quotation								Broker Quote						$	0.594 – 23.000				21.450
								2,345			Indicative Market Quotation								Broker Quote						EU R	16.000				—
	Real Estate(3)							541			Other Valuation Techniques(4)								-							-				—
Preferred Securities
	Banking & Finance							9,614			Discounted Cash Flow								Discount Rate							11.900				—
								19,263			Recent transaction								Purchase price						$	-				—
	Industrials							716			Comparable Companies								Revenue/ EBITDA Multiple						X	4.625 / 18.000				—
								6,037			Discounted Cash Flow								Discount Rate							19.155				—
Financial Derivative Instruments- Assets
Over the counter								322			Indicative Market Quotation								Broker Quote							0.191 – 4.267				4.223
Financial Derivative Instruments- Liabilities
Over the counter								(4,959)			Indicative Market Quotation								Broker Quote							91.500 – 92.000				97.946


Schedule of Investments PIMCO Corporate & Income Opportunity Fund (Cont.)	March 31, 2026 (Unaudited)



Total		$	489,650

(1)	Net Purchases and Settlements for Financial Derivative Instruments may include payments made or received upon entering into swap agreements to compensate for differences between the stated terms of the swap agreement and prevailing market conditions.
(2)	Any difference between Net Change in Unrealized Appreciation/(Depreciation) and Net Change in Unrealized Appreciation/(Depreciation) on Investments Held at March 31, 2026 may be due to an investment no longer held or categorized as Level 3 at period end.
(3)	Sector type updated from Financials to Real Estate since prior fiscal year end.
(4)	Includes valuation techniques not defined in the Notes to Financial Statements as securities valued using such techniques are not considered significant to the Fund.


	Market Value 06/30/2025		Purchases at Cost		Proceeds from Sales		Net Realized Gain (Loss)		Change in Unrealized Appreciation (Depreciation)		Market Value 03/31/2026		Dividend Income(1)		Realized Net Capital Gain Distributions(1)
$	197,390	$	1,116,326	$	(1,201,700)	$	91	$	(82)	$	112,025	$	2,436	$	0


Security Name		Market Value at 06/30/2025		Purchases at cost		Proceeds from Sale		Net Realized Gain/(Loss)		Change in Unrealized Appreciation (Depreciation)		Market Value at 03/31/2026		Dividend Income	Shares Held at 03/31/2026
Windstream Services LLC.	$	0	$	8,639	$	0	$	0	$	4,644	$	13,283	$	0	1,416,163

Glossary: (abbreviations that may be used in the preceding statements)					(Unaudited)

Counterparty Abbreviations:
AZD	Australia and New Zealand Banking Group	DUB	Deutsche Bank AG	MYI	Morgan Stanley & Co. International PLC
BOA	Bank of America N.A.	FAR	Wells Fargo Bank National Association	NGF	Nomura Global Financial Products, Inc.
BPS	BNP Paribas S.A.	GLM	Goldman Sachs Bank USA	NOM	Nomura Securities International, Inc.
BRC	Barclays Bank PLC	GST	Goldman Sachs International	RDR	RBC Capital Markets LLC
BSH	Banco Santander S.A. - New York Branch	IND	Crédit Agricole Corporate and Investment Bank S.A.	RTA	RBC (Barbados) Trading Bank Corp.
BYR	The Bank of Nova Scotia - Toronto	JML	JP Morgan Securities Plc	SCX	Standard Chartered Bank, London
CBK	Citibank N.A.	JPM	JP Morgan Chase Bank N.A.	SOG	Societe Generale Paris
CEW	Canadian Imperial Bank of Commerce World Markets	MBC	HSBC Bank Plc	SSB	State Street Bank and Trust Co.
DBL	Deutsche Bank AG London	MEI	Merrill Lynch International	TDM	TD Securities (USA) LLC
DEU	Deutsche Bank Securities, Inc.	MYC	Morgan Stanley Bank, N.A.	UAG	UBS AG Stamford

Currency Abbreviations:
AUD	Australian Dollar	EUR	Euro	KZT	Kazakhstani Tenge
BRL	Brazilian Real	GBP	British Pound	MXN	Mexican Peso
CAD	Canadian Dollar	HKD	Hong Kong Dollar	NGN	Nigerian Naira
COP	Colombian Peso	IDR	Indonesian Rupiah	PEN	Peruvian New Sol
DOP	Dominican Peso	JPY	Japanese Yen	TRY	Turkish New Lira
EGP	Egyptian Pound	KWD	Kuwaiti Dinar	USD (or $)	United States Dollar

Exchange Abbreviations:
OTC	Over the Counter

Index/Spread Abbreviations:
ABX.HE	Asset-Backed Securities Index - Home Equity	FHMMUSTF	Federated Hermes US Treasury Cash Reserves Fund Yield	SOFR	Secured Overnight Financing Rate
BISTREFI	Turkish Lira Overnight Reference Rate	GSMMUSTF	Goldman Sachs Money Market US Treasury Fund Index	SOFRINDX	Secured Overnight Financing Rate Index
BNMMDTSC	Dreyfus Treasury Securites Cash Management Fund Yield	GSMMUSTI	Goldman Sachs Money Market US Treasury Instrument Index	SONIO	Sterling Overnight Interbank Average Rate
BRMMUSDF	BlackRock Money Market US Treasury Fund Index	HSMMUSTF	HSBC UST Money Market Yield	TSFR1M	Term SOFR 1-Month

EUR003M	3 Month EUR Swap Rate	JMMMUSTF	JP Morgan Money Market US Treasury Fund Index	TSFR3M	Term SOFR 3-Month
EUR006M	6 Month EUR Swap Rate	JY0003M	3 Month JPY-LIBOR	TSFR6M	Term SOFR 6-Month
EUR012M	12 Month EUR Swap Rate	MSMMUSTF	MSILF Money Market US Treasury Fund Index	US0003M	ICE 3-Month USD LIBOR

Municipal Bond or Agency Abbreviations:
ACA	American Capital Access Holding Ltd.

Other Abbreviations:
ABS	Asset-Backed Security	DAC	Designated Activity Company	PIK	Payment-in-Kind
ALT	Alternate Loan Trust	EBITDA	Earnings before Interest, Taxes, Depreciation and Amoritization	REMIC	Real Estate Mortgage Investment Conduit
BRL-CDI	Brazil Interbank Deposit Rate	EURIBOR	Euro Interbank Offered Rate	TBA	To-Be-Announced
CDO	Collateralized Debt Obligation	JSC	Joint Stock Company	TBD	To-Be-Determined
CLO	Collateralized Loan Obligation	OIS	Overnight Index Swap	TBD%	Interest rate to be determined when loan settles or at the time of funding
CMBS	Collateralized Mortgage-Backed Security