American Century Investments®
Quarterly Portfolio Holdings
American Century® U.S. Quality Growth ETF (QGRO)
May 31, 2026


U.S. Quality Growth ETF - Schedule of Investments 
MAY 31, 2026 (UNAUDITED)
 Shares
Value ($)
COMMON STOCKS — 99.9%
  
Aerospace and Defense — 3.0%
  
ATI, Inc.(1)
21,350 3,739,666 
Carpenter Technology Corp.
18,372 8,616,101 
General Electric Co.
11,349 3,674,352 
Howmet Aerospace, Inc.
152,762 39,450,787 
Lockheed Martin Corp.
3,527 1,870,897 
RTX Corp.
19,461 3,496,363 
Woodward, Inc.
9,626 3,369,389 
  64,217,555 
Air Freight and Logistics — 0.2%
  
CH Robinson Worldwide, Inc.
19,226 3,434,725 
Automobile Components — 0.1%
  
Gentex Corp.
78,806 1,903,953 
Automobiles — 0.2%
  
Tesla, Inc.(1)
8,209 3,577,400 
Beverages — 0.4%
  
Coca-Cola Consolidated, Inc.
29,878 5,176,662 
Monster Beverage Corp.(1)
39,674 3,494,486 
  8,671,148 
Biotechnology — 1.9%
  
Exelixis, Inc.(1)
291,825 14,731,326 
Gilead Sciences, Inc.
14,131 1,899,630 
Halozyme Therapeutics, Inc.(1)
26,913 1,790,791 
Incyte Corp.(1)
189,310 18,313,850 
Neurocrine Biosciences, Inc.(1)
33,883 5,363,679 
  42,099,276 
Broadline Retail — 2.0%
  
Amazon.com, Inc.(1)
133,176 36,042,753 
Dillard's, Inc., Class A(2)
13,366 7,888,747 
  43,931,500 
Building Products — 0.5%
  
A.O. Smith Corp.
32,256 1,829,560 
Carlisle Cos., Inc.
5,548 1,913,006 
Johnson Controls International PLC
25,280 3,389,037 
Trane Technologies PLC
7,651 3,452,896 
  10,584,499 
Capital Markets — 1.1%
  
Cboe Global Markets, Inc.
9,731 3,245,872 
Charles Schwab Corp.
37,880 3,308,818 
Evercore, Inc., Class A
15,216 5,186,526 
Interactive Brokers Group, Inc., Class A
40,853 3,552,985 
Morningstar, Inc.
30,390 5,531,588 
Piper Sandler Cos.
22,834 1,790,414 
SEI Investments Co.
20,583 1,808,834 
  24,425,037 
Chemicals — 0.2%
  
CF Industries Holdings, Inc.
15,154 1,702,552 
NewMarket Corp.
2,560 1,980,365 
  3,682,917 


Communications Equipment — 2.4%
  
Arista Networks, Inc.(1)
283,667 45,236,377 
Ciena Corp.(1)
5,832 3,383,901 
Cisco Systems, Inc.
15,601 1,878,672 
F5, Inc.(1)
5,886 2,256,987 
  52,755,937 
Construction and Engineering — 1.9%
  
Comfort Systems USA, Inc.
14,928 27,291,519 
EMCOR Group, Inc.
4,033 3,334,565 
Quanta Services, Inc.
4,777 3,399,934 
Sterling Infrastructure, Inc.(1)
4,667 4,017,541 
Valmont Industries, Inc.
6,767 3,517,554 
  41,561,113 
Consumer Finance — 0.2%
  
FirstCash Holdings, Inc.
15,135 3,328,338 
Consumer Staples Distribution & Retail — 2.6%
  
Casey's General Stores, Inc.
4,152 3,185,165 
Costco Wholesale Corp.
45,643 43,649,314 
Kroger Co.
27,495 1,708,814 
Maplebear, Inc.(1)
45,998 1,830,720 
Sprouts Farmers Market, Inc.(1)
21,596 1,784,262 
Target Corp.
14,618 1,857,509 
Walmart, Inc.
28,224 3,266,928 
  57,282,712 
Diversified Consumer Services — 0.6%
  
Grand Canyon Education, Inc.(1)
68,884 10,322,267 
H&R Block, Inc.
48,669 1,873,270 
  12,195,537 
Diversified Telecommunication Services — 0.1%
  
Verizon Communications, Inc.
38,203 1,826,485 
Electrical Equipment — 2.8%
  
GE Vernova, Inc.
32,809 31,769,611 
Vertiv Holdings Co., Class A
90,420 28,546,498 
  60,316,109 
Electronic Equipment, Instruments and Components — 2.6%
  
Amphenol Corp., Class A
45,936 6,833,439 
Cognex Corp.
81,979 5,398,317 
Corning, Inc.
17,847 3,233,163 
Fabrinet(1)
4,870 3,185,759 
Jabil, Inc.
82,045 29,910,325 
Keysight Technologies, Inc.(1)
15,609 5,280,993 
TE Connectivity PLC
9,103 1,942,671 
Zebra Technologies Corp., Class A(1)
7,612 1,854,512 
  57,639,179 
Entertainment — 4.1%
  
Netflix, Inc.(1)
708,009 60,902,934 
Spotify Technology SA(1)
55,921 27,830,763 
  88,733,697 
Financial Services — 3.1%
  
Block, Inc.(1)
49,886 3,777,368 
Jack Henry & Associates, Inc.
13,213 1,801,196 
Mastercard, Inc., Class A
97,810 48,316,184 
Toast, Inc., Class A(1)
228,679 5,952,514 
Visa, Inc., Class A
21,949 7,163,276 
  67,010,538 


Ground Transportation — 2.1%
  
JB Hunt Transport Services, Inc.
132,110 36,519,167 
Landstar System, Inc.
17,920 3,707,648 
Old Dominion Freight Line, Inc.
16,489 3,712,498 
Uber Technologies, Inc.(1)
25,052 1,763,661 
  45,702,974 
Health Care Equipment and Supplies — 4.5%
  
Dexcom, Inc.(1)
501,962 37,014,678 
Edwards Lifesciences Corp.(1)
41,162 3,559,278 
IDEXX Laboratories, Inc.(1)
9,526 5,368,187 
Insulet Corp.(1)
61,853 8,964,974 
Intuitive Surgical, Inc.(1)
83,656 35,523,684 
Masimo Corp.(1)
19,171 3,421,065 
Penumbra, Inc.(1)
10,445 3,324,643 
  97,176,509 
Health Care Providers and Services — 1.1%
  
BrightSpring Health Services, Inc.(1)
59,057 3,642,636 
Cardinal Health, Inc.
26,264 5,168,755 
Centene Corp.(1)
91,202 5,435,639 
Chemed Corp.
4,176 1,780,688 
DaVita, Inc.(1)
17,239 3,350,572 
UnitedHealth Group, Inc.
13,775 5,238,771 
  24,617,061 
Hotels, Restaurants and Leisure — 1.7%
  
Booking Holdings, Inc.
138,582 23,202,784 
Brinker International, Inc.(1)
13,503 1,922,557 
Expedia Group, Inc.
50,726 11,453,424 
  36,578,765 
Independent Power and Renewable Electricity Producers — 0.7%
  
Talen Energy Corp.(1)
41,382 16,006,558 
Insurance — 0.1%
  
Allstate Corp.
8,599 1,772,168 
Interactive Media and Services — 5.1%
  
Alphabet, Inc., Class A
190,277 72,369,954 
Match Group, Inc.
51,712 1,868,355 
Meta Platforms, Inc., Class A
42,072 26,610,961 
Pinterest, Inc., Class A(1)
97,829 1,961,471 
Reddit, Inc., Class A(1)
50,039 8,806,864 
  111,617,605 
IT Services — 2.6%
  
Accenture PLC, Class A
10,367 1,939,355 
Cloudflare, Inc., Class A(1)
16,105 3,894,511 
Cognizant Technology Solutions Corp., Class A
35,246 1,965,141 
EPAM Systems, Inc.(1)
17,871 1,831,062 
Gartner, Inc.(1)
46,917 7,609,937 
GoDaddy, Inc., Class A(1)
120,843 10,371,955 
International Business Machines Corp.
7,290 2,170,962 
Twilio, Inc., Class A(1)
18,684 3,561,918 
VeriSign, Inc.
83,527 23,836,935 
  57,181,776 
Life Sciences Tools and Services — 0.5%
  
Illumina, Inc.(1)
36,379 5,928,322 
Medpace Holdings, Inc.(1)
4,288 1,917,207 
West Pharmaceutical Services, Inc.
10,833 3,497,001 
  11,342,530 


Machinery — 0.7%
  
Caterpillar, Inc.
5,943 5,205,295 
Cummins, Inc.
5,361 3,466,584 
Federal Signal Corp.
47,203 5,036,560 
Toro Co.
20,524 1,844,697 
  15,553,136 
Media — 2.2%
  
New York Times Co., Class A
622,014 46,781,673 
Multi-Utilities — 0.1%
  
Consolidated Edison, Inc.
17,170 1,813,667 
Oil, Gas and Consumable Fuels — 1.2%
  
Antero Midstream Corp.
157,025 3,291,244 
ConocoPhillips28,409 3,238,058 
Exxon Mobil Corp.
22,054 3,203,564 
HF Sinclair Corp.
84,412 5,899,555 
Marathon Petroleum Corp.
21,208 5,275,914 
Valero Energy Corp.
21,854 5,350,296 
  26,258,631 
Pharmaceuticals — 3.3%
  
Bristol-Myers Squibb Co.
30,967 1,770,693 
Eli Lilly & Co.
60,697 67,070,185 
Johnson & Johnson
7,958 1,793,176 
Merck & Co., Inc.
15,914 1,889,310 
  72,523,364 
Professional Services — 0.7%
  
ExlService Holdings, Inc.(1)
243,341 7,064,189 
Genpact Ltd.
57,627 1,898,810 
Leidos Holdings, Inc.
14,988 1,915,466 
Paycom Software, Inc.
13,726 1,917,110 
Verisk Analytics, Inc.
19,957 3,492,276 
  16,287,851 
Real Estate Management and Development — 0.6%
  
CoStar Group, Inc.(1)
100,934 3,250,075 
Jones Lang LaSalle, Inc.(1)
33,541 9,468,960 
  12,719,035 
Semiconductors and Semiconductor Equipment — 12.0%
  
Advanced Micro Devices, Inc.(1)
33,663 17,373,474 
Analog Devices, Inc.
13,713 5,675,125 
Applied Materials, Inc.
51,164 23,026,870 
Astera Labs, Inc.(1)
25,337 8,686,790 
Cirrus Logic, Inc.(1)
66,405 11,285,530 
KLA Corp.
18,420 35,397,898 
Lam Research Corp.
174,324 55,466,410 
Micron Technology, Inc.
23,852 23,160,292 
Monolithic Power Systems, Inc.
2,194 3,436,265 
NVIDIA Corp.
288,029 60,814,443 
ON Semiconductor Corp.(1)
31,244 3,768,651 
Qorvo, Inc.(1)
18,867 1,953,867 
QUALCOMM, Inc.
27,333 6,861,130 
Texas Instruments, Inc.
17,657 5,397,392 
  262,304,137 
Software — 13.5%
  
Adobe, Inc.(1)
90,655 23,498,682 
AppLovin Corp., Class A(1)
86,748 53,184,331 
Atlassian Corp., Class A(1)
22,439 2,414,661 


Commvault Systems, Inc.(1)
17,397 2,065,894 
Crowdstrike Holdings, Inc., Class A(1)
5,283 3,861,873 
Datadog, Inc., Class A(1)
15,707 3,885,126 
Docusign, Inc.(1)
220,563 11,583,969 
Dropbox, Inc., Class A(1)
135,345 3,638,074 
Fair Isaac Corp.(1)
4,290 5,365,031 
Fortinet, Inc.(1)
278,782 38,463,552 
Guidewire Software, Inc.(1)
25,235 3,852,627 
HubSpot, Inc.(1)
26,560 5,859,933 
Intuit, Inc.
6,005 1,990,838 
Manhattan Associates, Inc.(1)
13,703 2,056,135 
Microsoft Corp.
48,958 22,042,850 
Nutanix, Inc., Class A(1)
117,896 6,138,845 
Palantir Technologies, Inc., Class A(1)
383,419 60,020,567 
Palo Alto Networks, Inc.(1)
13,541 3,814,364 
Pegasystems, Inc.
107,683 3,847,514 
PTC, Inc.(1)
12,644 1,754,102 
Salesforce, Inc.
124,017 23,699,649 
Samsara, Inc., Class A(1)
113,588 3,974,444 
ServiceNow, Inc.(1)
34,353 4,272,483 
UiPath, Inc., Class A(1)(2)
174,463 2,044,706 
  293,330,250 
Specialized REITs — 0.2%
  
Equinix, Inc.
3,176 3,392,095 
Specialty Retail — 3.8%
  
Chewy, Inc., Class A(1)
528,727 11,917,507 
Five Below, Inc.(1)
15,349 3,489,749 
Ross Stores, Inc.
15,768 3,653,919 
TJX Cos., Inc.
389,734 60,311,336 
Urban Outfitters, Inc.(1)
25,001 1,816,323 
Williams-Sonoma, Inc.
9,608 1,955,900 
  83,144,734 
Technology Hardware, Storage and Peripherals — 9.1%
  
Apple, Inc.
241,853 75,472,647 
Dell Technologies, Inc., Class C
20,842 8,772,606 
NetApp, Inc.
14,878 2,593,087 
Sandisk Corp.(1)
11,786 19,977,034 
Seagate Technology Holdings PLC
52,008 45,756,639 
Western Digital Corp.
86,647 46,027,753 
  198,599,766 
Textiles, Apparel and Luxury Goods — 0.5%
  
Ralph Lauren Corp.
14,054 5,114,251 
Tapestry, Inc.
37,875 5,509,297 
  10,623,548 
Tobacco — 0.1%
  
Altria Group, Inc.
25,018 1,740,752 
Trading Companies and Distributors — 0.2%
  
WW Grainger, Inc.
4,252 5,247,989 
Wireless Telecommunication Services — 3.3%
  
T-Mobile U.S., Inc.
386,395 72,460,654 
TOTAL COMMON STOCKS
(Cost $1,929,301,944)
 2,173,954,883 


RIGHTS — 0.0%
  
Health Care Equipment and Supplies — 0.0%
  
ABIOMED, Inc.(1)
(Cost $2,637)
2,586 2,637 
SHORT-TERM INVESTMENTS — 0.2%
  
Money Market Funds — 0.2%
  
State Street Institutional U.S. Government Money Market Fund, Premier Class
2,403,815 2,403,815 
State Street Navigator Securities Lending Government Money Market Portfolio(3)
2,706,872 2,706,872 
TOTAL SHORT-TERM INVESTMENTS
(Cost $5,110,687)
 5,110,687 
TOTAL INVESTMENT SECURITIES — 100.1%
(Cost $1,934,415,268)
 2,179,068,207 
OTHER ASSETS AND LIABILITIES — (0.1)%
 (1,884,205)
TOTAL NET ASSETS — 100.0%
 $2,177,184,002 

NOTES TO SCHEDULE OF INVESTMENTS
(1)Non-income producing.
(2)Security, or a portion thereof, is on loan. At the period end, the aggregate value of securities on loan was $2,647,764. The amount of securities on loan indicated may not correspond with the securities on loan identified because securities with pending sales are in the process of recall from the brokers.
(3)Investment of cash collateral from securities on loan. At the period end, the aggregate value of the collateral held by the fund was $2,706,872.


SUPPLEMENTARY NOTES TO SCHEDULE OF INVESTMENTS 

1. Investment Valuations

The fund determines the fair value of its investments and computes its net asset value (NAV) per share at the close of regular trading (usually 4 p.m. Eastern time) on the New York Stock Exchange (NYSE) on each day the NYSE is open. The value of investments of the fund is determined by American Century Investment Management, Inc. (ACIM) (the investment advisor), as the valuation designee, pursuant to its valuation policies and procedures. The Board of Trustees oversees the valuation designee and reviews its valuation policies and procedures at least annually.

Equity securities that are listed or traded on a domestic securities exchange are valued at the last reported sales price or at the official closing price as provided by the exchange. Equity securities traded on foreign securities exchanges are generally valued at the closing price of such securities on the exchange where primarily traded or at the close of the NYSE, if that is earlier. If no last sales price is reported, or if local convention or regulation so provides, the mean of the latest bid and asked prices may be used. Securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official closing price.

Open-end management investment companies are valued at the reported NAV per share.

If the valuation designee determines that the market price for a portfolio security is not readily available or is believed by the valuation designee to be unreliable, such security is valued at fair value as determined in good faith by the valuation designee, in accordance with its policies and procedures. Circumstances that may cause a fund to determine that market quotations are not available or reliable include, but are not limited to: when there is a significant event subsequent to the market quotation; trading in a security has been halted during the trading day; or trading in a security is insufficient or did not take place due to a closure or holiday.

The valuation designee monitors for significant events occurring after the close of an investment’s primary exchange but before the NAV per share is determined. Significant events may include, but are not limited to: corporate announcements and transactions; regulatory news, governmental action and political unrest that could impact a specific investment or an investment sector; or armed conflicts, natural disasters and similar events that could affect investments in a specific country or region. The valuation designee also monitors for significant fluctuations between domestic and foreign markets, as evidenced by the U.S. market or such other indicators that it deems appropriate. The valuation designee may apply a model-derived factor to the closing price of equity securities traded on foreign securities exchanges. The factor is based on observable market data as provided by an independent pricing service.

2. Fair Value Measurements

The fund's investments valuation process is based on several considerations and may use multiple inputs to determine the fair value of the investments held by the fund. In conformity with accounting principles generally accepted in the United States of America, the inputs used to determine a valuation are classified into three broad levels. 

•Level 1 valuation inputs consist of unadjusted quoted prices in an active market for identical investments.

•Level 2 valuation inputs consist of direct or indirect observable market data (including quoted prices for comparable investments, evaluations of subsequent market events, interest rates, prepayment speeds, credit risk, etc.). These inputs also consist of quoted prices for identical investments initially expressed in local currencies that are adjusted through translation into U.S. dollars. 

•Level 3 valuation inputs consist of unobservable data (including a fund’s own assumptions).

The level classification is based on the lowest level input that is significant to the fair valuation measurement. The valuation inputs are not necessarily an indication of the risks associated with investing in these securities or other financial instruments.

As of period end, the fund's investment securities were classified as Level 1. The Schedule of Investments provides additional information on the fund's portfolio holdings.
This schedule of investments provides information about the fund’s portfolio holdings as of the date on the schedule. It is unaudited, and American Century Investments assumes no obligation to update or supplement the schedule to reflect subsequent changes. More information is available in the fund’s most recent annual or semiannual financial statements.