v3.26.1
Investments - Fair Value of Portfolio of Investments by Geographic Region and Industry (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Schedule of Investments [Line Items]    
Total investments at fair value $ 1,192,350 [1] $ 927,402 [2],[3]
Percentage of Net Assets 237.24% [4] 191.23% [3],[5]
Western United States    
Schedule of Investments [Line Items]    
Total investments at fair value $ 356,898 $ 329,514
Percentage of Net Assets 71.02% 67.95%
Northeastern United States    
Schedule of Investments [Line Items]    
Total investments at fair value $ 274,441 $ 171,308
Percentage of Net Assets 54.61% 35.32%
Midwestern United States    
Schedule of Investments [Line Items]    
Total investments at fair value $ 192,640 $ 156,397
Percentage of Net Assets 38.33% 32.25%
Northwestern United States    
Schedule of Investments [Line Items]    
Total investments at fair value $ 73,882 $ 74,198
Percentage of Net Assets 14.70% 15.30%
South Central United States    
Schedule of Investments [Line Items]    
Total investments at fair value $ 72,185 $ 41,413
Percentage of Net Assets 14.36% 8.54%
Southeastern United States    
Schedule of Investments [Line Items]    
Total investments at fair value $ 50,294 $ 21,590
Percentage of Net Assets 10.01% 4.45%
Runway-Cadma I LLC | Joint Venture    
Schedule of Investments [Line Items]    
Total investments at fair value [6] $ 13,035 $ 13,253
Percentage of Net Assets [6] 2.59% 2.73%
United States    
Schedule of Investments [Line Items]    
Total investments at fair value $ 1,033,375 $ 807,673
Percentage of Net Assets 205.62% 166.54%
United Kingdom    
Schedule of Investments [Line Items]    
Total investments at fair value $ 57,437 $ 34,415
Percentage of Net Assets 11.43% 7.10%
Germany    
Schedule of Investments [Line Items]    
Total investments at fair value $ 63,631 $ 67,665
Percentage of Net Assets 12.66% 13.95%
Netherlands    
Schedule of Investments [Line Items]    
Total investments at fair value $ 17,660 $ 17,525
Percentage of Net Assets 3.51% 3.61%
Australia    
Schedule of Investments [Line Items]    
Total investments at fair value $ 11,430  
Percentage of Net Assets 2.27%  
Canada    
Schedule of Investments [Line Items]    
Total investments at fair value $ 8,817 $ 124
Percentage of Net Assets 1.75% 0.03%
Application Software    
Schedule of Investments [Line Items]    
Total investments at fair value $ 216,324 $ 226,692
Percentage of Net Assets 43.05% 46.74%
Health Care Equipment & Services    
Schedule of Investments [Line Items]    
Total investments at fair value $ 181,964 $ 122,997
Percentage of Net Assets 36.21% 25.36%
Pharmaceuticals, Biotechnology & Life Sciences    
Schedule of Investments [Line Items]    
Total investments at fair value $ 166,947 $ 1,994
Percentage of Net Assets 33.22% 0.41%
Financial Services    
Schedule of Investments [Line Items]    
Total investments at fair value $ 110,358 $ 83,915
Percentage of Net Assets 21.95% 17.31%
Commercial & Professional Services    
Schedule of Investments [Line Items]    
Total investments at fair value $ 104,875 $ 115,268
Percentage of Net Assets 20.86% 23.77%
Systems Software    
Schedule of Investments [Line Items]    
Total investments at fair value $ 97,444 $ 97,823
Percentage of Net Assets 19.38% 20.17%
Technology Hardware & Equipment    
Schedule of Investments [Line Items]    
Total investments at fair value $ 72,886 $ 72,922
Percentage of Net Assets 14.50% 15.03%
Household & Personal Products    
Schedule of Investments [Line Items]    
Total investments at fair value $ 66,370 $ 39,777
Percentage of Net Assets 13.21% 8.20%
Insurance    
Schedule of Investments [Line Items]    
Total investments at fair value $ 45,598 $ 44,831
Percentage of Net Assets 9.08% 9.25%
Consumer Staples Distribution & Retail    
Schedule of Investments [Line Items]    
Total investments at fair value $ 43,139 $ 47,813
Percentage of Net Assets 8.58% 9.86%
Consumer Services    
Schedule of Investments [Line Items]    
Total investments at fair value $ 35,265 $ 19,851
Percentage of Net Assets 7.02% 4.09%
Media & Entertainment    
Schedule of Investments [Line Items]    
Total investments at fair value $ 27,400 $ 30,297
Percentage of Net Assets 5.45% 6.25%
Multi-Sector Holdings    
Schedule of Investments [Line Items]    
Total investments at fair value [7] $ 23,780 $ 23,222
Percentage of Net Assets [7] 4.73% 4.79%
[1]

Investments are held at Fair Value net of the Fair Value of Unfunded Commitments. Refer to "Note 8 – Commitments, Contingencies, and Off-Balance Sheet Arrangements" for additional detail.
[2]

Investments are held at Fair Value net of the Fair Value of Unfunded Commitments. Refer to "Note 8 – Commitments, Contingencies, and Off-Balance Sheet Arrangements" for additional detail.
[3] The Company reclassified certain industry groupings of its portfolio companies presented in the consolidated financial statements as of December 31, 2025, to align with Global Industry Classification Standards (“GICS”), where applicable
[4]

Fair value as a percentage of net assets.
[5]

Fair value as a percentage of net assets.
[6] Runway-Cadma I LLC is a joint venture between the Company and Cadma. This entity invests in secured loans to growth-stage companies in different geographic regions that have been originated by the Company. See "Note 2 – Summary of Significant Accounting Policies" for further discussion.
[7] Multi-Sector Holdings consists of the Company's investment in Runway-Cadma I LLC, a joint venture between the Company and Cadma. This entity invests in secured loans to growth-stage companies that have been originated by the Company. See "Note 2 – Summary of Significant Accounting Policies" for further discussion.