v3.26.1
Fair Value of Investments - Schedule of Fair Value Hierarchy of Investments (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Assets    
Cash $ 132,637 $ 143,140
Total Investments at Fair Value 5,217,369 [1],[2] 6,207,136 [3],[4]
First-lien senior secured debt investments    
Assets    
Total Investments at Fair Value 4,557,893 5,484,795
Second-lien senior secured debt investments    
Assets    
Total Investments at Fair Value 201,125 267,441
Unsecured debt investments    
Assets    
Total Investments at Fair Value 62,454 66,531
Preferred equity investments    
Assets    
Total Investments at Fair Value 171,367 173,230
Common equity investments    
Assets    
Total Investments at Fair Value 100,585 101,617
Specialty finance equity investments    
Assets    
Total Investments at Fair Value 108,651 89,389
Levels 1, Level 2, and Level 3    
Assets    
Total Investments at Fair Value 5,084,268 6,094,131
Foreign currency forward contracts 265  
Liabilities    
Foreign currency forward contracts   429
Levels 1, Level 2, and Level 3 | First-lien senior secured debt investments    
Assets    
Total Investments at Fair Value 4,557,893 5,484,795
Levels 1, Level 2, and Level 3 | Second-lien senior secured debt investments    
Assets    
Total Investments at Fair Value 201,125 267,441
Levels 1, Level 2, and Level 3 | Unsecured debt investments    
Assets    
Total Investments at Fair Value 62,454 66,531
Levels 1, Level 2, and Level 3 | Preferred equity investments    
Assets    
Total Investments at Fair Value 171,367 173,230
Levels 1, Level 2, and Level 3 | Common equity investments    
Assets    
Total Investments at Fair Value 88,767 99,511
Levels 1, Level 2, and Level 3 | Specialty finance equity investments    
Assets    
Total Investments at Fair Value 2,662 2,623
Level 1    
Assets    
Total Investments at Fair Value 0 0
Foreign currency forward contracts 0  
Liabilities    
Foreign currency forward contracts   0
Level 1 | First-lien senior secured debt investments    
Assets    
Total Investments at Fair Value 0 0
Level 1 | Second-lien senior secured debt investments    
Assets    
Total Investments at Fair Value 0 0
Level 1 | Unsecured debt investments    
Assets    
Total Investments at Fair Value 0 0
Level 1 | Preferred equity investments    
Assets    
Total Investments at Fair Value 0 0
Level 1 | Common equity investments    
Assets    
Total Investments at Fair Value 0 0
Level 1 | Specialty finance equity investments    
Assets    
Total Investments at Fair Value 0 0
Level 2    
Assets    
Total Investments at Fair Value 505,344 799,006
Foreign currency forward contracts 265  
Liabilities    
Foreign currency forward contracts   429
Level 2 | First-lien senior secured debt investments    
Assets    
Total Investments at Fair Value 415,552 681,894
Level 2 | Second-lien senior secured debt investments    
Assets    
Total Investments at Fair Value 83,280 106,187
Level 2 | Unsecured debt investments    
Assets    
Total Investments at Fair Value 0 0
Level 2 | Preferred equity investments    
Assets    
Total Investments at Fair Value 0 0
Level 2 | Common equity investments    
Assets    
Total Investments at Fair Value 6,512 10,925
Level 2 | Specialty finance equity investments    
Assets    
Total Investments at Fair Value 0 0
Level 3    
Assets    
Total Investments at Fair Value 4,578,924 5,295,125
Foreign currency forward contracts 0  
Liabilities    
Foreign currency forward contracts   0
Level 3 | First-lien senior secured debt investments    
Assets    
Total Investments at Fair Value 4,142,341 4,802,901
Level 3 | Second-lien senior secured debt investments    
Assets    
Total Investments at Fair Value 117,845 161,254
Level 3 | Unsecured debt investments    
Assets    
Total Investments at Fair Value 62,454 66,531
Level 3 | Preferred equity investments    
Assets    
Total Investments at Fair Value 171,367 173,230
Level 3 | Common equity investments    
Assets    
Total Investments at Fair Value 82,255 88,586
Level 3 | Specialty finance equity investments    
Assets    
Total Investments at Fair Value 2,662 2,623
Investments measured at NAV    
Assets    
Investments measured at Net Asset Value ("NAV") 133,101 113,005
Cash | Levels 1, Level 2, and Level 3    
Assets    
Cash 149,087 153,225
Cash | Level 1    
Assets    
Cash 149,087 153,225
Cash | Level 2    
Assets    
Cash 0 0
Cash | Level 3    
Assets    
Cash $ 0 $ 0
[1] Certain portfolio company investments are subject to contractual restrictions on sales. Refer to footnote 30 for additional information on our restricted securities.
[2] Unless otherwise indicated, the Company’s portfolio companies are pledged as collateral supporting the amounts outstanding under the Company’s Amended and Restated Senior Secured Revolving Credit Agreement (the “Revolving Credit Facility”) and credit facilities to which certain of the Company’s subsidiaries are parties (the “SPV Asset Facilities” and the “CLOs”). See “Note 5 — Debt.”
[3] Certain portfolio company investments are subject to contractual restrictions on sales. Refer to footnote 30 for additional information on our restricted securities.
[4] Unless otherwise indicated, the Company’s portfolio companies are pledged as collateral supporting the amounts outstanding under the Company’s Amended and Restated Senior Secured Revolving Credit Agreement (the “Revolving Credit Facility”) and credit facilities to which certain of the Company’s subsidiaries are parties (the “SPV Asset Facilities” and the “CLOs”). See “Note 5 — Debt.”