v3.26.1
Investments - Schedule of Investments by Industry Classification and Enumerates Percentage, by Fair Value, of Total Portfolio Assets Excluding Cash and Cash Equivalents (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Sep. 30, 2025
Schedule Of Investments [Line Items]    
Cost $ 2,627,447 [1],[2] $ 2,819,393 [3],[4],[5],[6]
Fair Value $ 2,504,658 [1],[2] $ 2,773,328 [3],[4],[5],[6],[7]
Net asset value Percentage 246.10% [8],[9],[10] 258.10% [3],[4],[5],[6]
Aerospace and Defense    
Schedule Of Investments [Line Items]    
Cost [11] $ 194,637 $ 222,607
Fair Value [11] $ 204,699 $ 236,703
Fair Value Percentage [11] 10.00% 10.00%
Net asset value Percentage [11] 20.00% 22.00%
Professional Services    
Schedule Of Investments [Line Items]    
Cost [11] $ 239,756 $ 252,226
Fair Value [11] $ 236,874 $ 248,621
Fair Value Percentage [11] 11.00% 10.00%
Net asset value Percentage [11] 23.00% 23.00%
Media    
Schedule Of Investments [Line Items]    
Cost [11] $ 197,079 $ 169,182
Fair Value [11] $ 196,941 $ 169,013
Fair Value Percentage [11] 9.00% 7.00%
Net asset value Percentage [11] 19.00% 16.00%
Healthcare Providers and Services    
Schedule Of Investments [Line Items]    
Cost [11] $ 163,082 $ 195,695
Fair Value [11] $ 160,839 $ 199,549
Fair Value Percentage [11] 8.00% 8.00%
Net asset value Percentage [11] 16.00% 19.00%
Diversified Consumer Services    
Schedule Of Investments [Line Items]    
Cost [11] $ 105,911 $ 121,706
Fair Value [11] $ 103,382 $ 120,861
Fair Value Percentage [11] 5.00% 5.00%
Net asset value Percentage [11] 10.00% 11.00%
Business Services    
Schedule Of Investments [Line Items]    
Cost [11] $ 139,891 $ 171,987
Fair Value [11] $ 131,194 $ 169,086
Fair Value Percentage [11] 6.00% 7.00%
Net asset value Percentage [11] 13.00% 16.00%
IT Services    
Schedule Of Investments [Line Items]    
Cost [11] $ 104,158 $ 123,257
Fair Value [11] $ 103,741 $ 125,392
Fair Value Percentage [11] 5.00% 5.00%
Net asset value Percentage [11] 10.00% 12.00%
Personal Products    
Schedule Of Investments [Line Items]    
Cost [11] $ 108,277 $ 99,851
Fair Value [11] $ 94,401 $ 99,069
Fair Value Percentage [11] 4.00% 4.00%
Net asset value Percentage [11] 9.00% 9.00%
Distributors    
Schedule Of Investments [Line Items]    
Cost [11] $ 88,313 $ 84,194
Fair Value [11] $ 96,198 $ 88,795
Fair Value Percentage [11] 5.00% 4.00%
Net asset value Percentage [11] 9.00% 8.00%
All Other    
Schedule Of Investments [Line Items]    
Cost [11] $ 94,689 $ 137,318
Fair Value [11] $ 82,663 $ 126,930
Fair Value Percentage [11] 2.00% 4.00%
Net asset value Percentage [11] 8.00% 12.00%
Construction & Engineering    
Schedule Of Investments [Line Items]    
Cost [11] $ 52,839 $ 106,806
Fair Value [11] $ 57,896 $ 110,299
Fair Value Percentage [11] 3.00% 4.00%
Net asset value Percentage [11] 6.00% 10.00%
Healthcare Technology    
Schedule Of Investments [Line Items]    
Cost [11] $ 63,605 $ 103,230
Fair Value [11] $ 61,732 $ 105,500
Fair Value Percentage [11] 3.00% 4.00%
Net asset value Percentage [11] 6.00% 10.00%
Commercial Services & Supplies    
Schedule Of Investments [Line Items]    
Cost [11] $ 55,778 $ 70,373
Fair Value [11] $ 57,499 $ 73,060
Fair Value Percentage [11] 3.00% 3.00%
Net asset value Percentage [11] 6.00% 7.00%
Leisure Products    
Schedule Of Investments [Line Items]    
Cost [11] $ 53,789 $ 97,385
Fair Value [11] $ 53,040 $ 95,499
Fair Value Percentage [11] 3.00% 4.00%
Net asset value Percentage [11] 5.00% 9.00%
Electronic Equipment, Instruments, and Components    
Schedule Of Investments [Line Items]    
Cost [11] $ 49,028 $ 43,733
Fair Value [11] $ 49,822 $ 44,241
Fair Value Percentage [11] 2.00% 2.00%
Net asset value Percentage [11] 5.00% 4.00%
Government Services    
Schedule Of Investments [Line Items]    
Cost [11] $ 40,857 $ 28,870
Fair Value [11] $ 42,288 $ 29,837
Fair Value Percentage [11] 2.00% 1.00%
Net asset value Percentage [11] 4.00% 3.00%
Auto Components    
Schedule Of Investments [Line Items]    
Cost [11] $ 39,852 $ 31,104
Fair Value [11] $ 42,712 $ 32,224
Fair Value Percentage [11] 2.00% 1.00%
Net asset value Percentage [11] 4.00% 3.00%
Automobiles    
Schedule Of Investments [Line Items]    
Cost [11] $ 53,363 $ 34,935
Fair Value [11] $ 52,331 $ 34,207
Fair Value Percentage [11] 2.00% 1.00%
Net asset value Percentage [11] 5.00% 3.00%
High Tech Industries    
Schedule Of Investments [Line Items]    
Cost [11] $ 25,222 $ 41,135
Fair Value [11] $ 35,686 $ 56,769
Fair Value Percentage [11] 2.00% 2.00%
Net asset value Percentage [11] 4.00% 5.00%
Healthcare, Education & Childcare    
Schedule Of Investments [Line Items]    
Cost [11] $ 27,164 $ 36,349
Fair Value [11] $ 27,498 $ 36,530
Fair Value Percentage [11] 1.00% 1.00%
Net asset value Percentage [11] 3.00% 3.00%
Consumer Services    
Schedule Of Investments [Line Items]    
Cost [11] $ 29,984 $ 28,840
Fair Value [11] $ 25,044 $ 28,878
Fair Value Percentage [11] 1.00% 1.00%
Net asset value Percentage [11] 2.00% 3.00%
Manufacturing/Basic Industry    
Schedule Of Investments [Line Items]    
Cost [11] $ 28,213 $ 56,192
Fair Value [11] $ 27,824 $ 56,192
Fair Value Percentage [11] 1.00% 2.00%
Net asset value Percentage [11] 3.00% 5.00%
Internet Software and Services    
Schedule Of Investments [Line Items]    
Cost [11] $ 24,816 $ 39,660
Fair Value [11] $ 24,810 $ 40,012
Fair Value Percentage [11] 1.00% 2.00%
Net asset value Percentage [11] 2.00% 4.00%
Healthcare Equipment and Supplies    
Schedule Of Investments [Line Items]    
Cost [11] $ 19,172 $ 29,575
Fair Value [11] $ 20,550 $ 31,850
Fair Value Percentage [11] 1.00% 1.00%
Net asset value Percentage [11] 2.00% 3.00%
Marketing Services    
Schedule Of Investments [Line Items]    
Cost [11] $ 25,104 $ 19,307
Fair Value [11] $ 25,195 $ 19,365
Fair Value Percentage [11] 1.00% 1.00%
Net asset value Percentage [11] 3.00% 2.00%
Building Products    
Schedule Of Investments [Line Items]    
Cost [11] $ 20,599 $ 20,322
Fair Value [11] $ 19,736 $ 19,964
Fair Value Percentage [11] 1.00% 1.00%
Net asset value Percentage [11] 2.00% 2.00%
Gaming    
Schedule Of Investments [Line Items]    
Cost [11] $ 18,383 $ 14,852
Fair Value [11] $ 18,519 $ 14,974
Fair Value Percentage [11] 1.00% 1.00%
Net asset value Percentage [11] 2.00% 1.00%
Software    
Schedule Of Investments [Line Items]    
Cost [11] $ 15,166 $ 17,716
Fair Value [11] $ 13,034 $ 17,453
Fair Value Percentage [11] 1.00% 1.00%
Net asset value Percentage [11] 1.00% 2.00%
Independent Power and Renewable Electricity Producers    
Schedule Of Investments [Line Items]    
Cost [11] $ 14,119 $ 20,028
Fair Value [11] $ 15,065 $ 21,134
Fair Value Percentage [11] 1.00% 1.00%
Net asset value Percentage [11] 2.00% 2.00%
Metals and Mining    
Schedule Of Investments [Line Items]    
Cost [11] $ 14,805 $ 14,437
Fair Value [11] $ 14,883 $ 14,447
Fair Value Percentage [11] 1.00% 1.00%
Net asset value Percentage [11] 2.00% 1.00%
Transportation Sector [Member]    
Schedule Of Investments [Line Items]    
Cost [11] $ 13,589 $ 14,122
Fair Value [11] $ 13,115 $ 13,785
Fair Value Percentage [11] 1.00% 1.00%
Net asset value Percentage [11] 1.00% 1.00%
Consumer Products    
Schedule Of Investments [Line Items]    
Cost [11] $ 11,707 $ 11,024
Fair Value [11] $ 11,723 $ 11,121
Fair Value Percentage [11] 1.00% 0.00%
Net asset value Percentage [11] 1.00% 1.00%
Total    
Schedule Of Investments [Line Items]    
Cost [11] $ 2,132,947 $ 2,458,018
Fair Value [11] $ 2,120,934 $ 2,491,360
Fair Value Percentage [11] 100.00% 100.00%
Net asset value Percentage [11] 208.00% 232.00%
[1] All of our investments are not registered under the 1933 Act and have restrictions on resale.
(13)
Rate disclosed is the seven day effective yield as of June 30, 2026.
[2] As of June 30, 2026, all investments were in U.S. companies and total cost, fair value, and percentage of Net Assets for the U.S. companies were $2,627.4 million, $2,504.7 million, and 246.1%.
[3] All of our investments are not registered under the 1933 Act and have restrictions on resale.
[4] As of September 30, 2025, all investments were in U.S. companies and total cost, fair value, and percentage of Net Assets for the U.S. companies were $2,819.4 million, $2,773.3 million, and 258.1%
[5] The provisions of the 1940 Act classify investments based on the level of control that we maintain in a particular portfolio company. As defined in the 1940 Act, a company is generally presumed to be “non-controlled” when we own 25% or less of the portfolio company’s voting securities and “controlled” when we own more than 25% of the portfolio company’s voting securities.
[6] The provisions of the 1940 Act classify investments further based on the level of ownership that we maintain in a particular portfolio company. As defined in the 1940 Act, a company is generally deemed as “non-affiliated” when we own less than 5% of a portfolio company’s voting securities and “affiliated” when we own 5% or more of a portfolio company’s voting securities.
[7] Valued based on our accounting policy (See Note 2). The value of all securities was determined using significant unobservable inputs (See Note 5).
[8] Non-income producing securities.
[9] The provisions of the 1940 Act classify investments based on the level of control that we maintain in a particular portfolio company. As defined in the 1940 Act, a company is generally presumed to be “non-controlled” when we own 25% or less of the portfolio company’s voting securities and “controlled” when we own more than 25% of the portfolio company’s voting securities.
[10] The provisions of the 1940 Act classify investments further based on the level of ownership that we maintain in a particular portfolio company. As defined in the 1940 Act, a company is generally deemed as “non-affiliated” when we own less than 5% of a portfolio company’s voting securities and “affiliated” when we own 5% or more of a portfolio company’s voting securities.
[11] Excludes investments in PSSL and PSSL II