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FAIR VALUE MEASUREMENTS - Schedule of Investments Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value $ 1,863,644 [1],[2] $ 1,468,228 [3],[4],[5]
Liabilities, fair value 6,257 480
First-lien debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 1,771,640 1,427,843
Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 15,501 8,487
Preferred Equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 35,298 842
Interest Rate Swaps    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Liabilities, fair value 6,257 480
Level 1    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 0 0
Level 1 | First-lien debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 0 0
Level 1 | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 0 0
Level 1 | Preferred Equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 0 0
Level 1 | Interest Rate Swaps    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Liabilities, fair value 0 0
Level 2    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 303,582 496,692
Level 2 | First-lien debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 303,582 496,692
Level 2 | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 0 0
Level 2 | Preferred Equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 0 0
Level 2 | Interest Rate Swaps    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Liabilities, fair value 6,257 480
Level 3    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 1,518,857 940,480
Level 3 | First-lien debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 1,468,058 931,151
Level 3 | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 15,501 8,487
Level 3 | Preferred Equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 35,298 842
Level 3 | Interest Rate Swaps    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Liabilities, fair value 0 0
Fair Value, Inputs, Level 1, Level 2, and Level 3    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 1,822,439 1,437,172
Fair Value Measured at Net Asset Value Per Share [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value $ 41,205 [6] $ 31,056 [7]
[1] The Company uses an internally developed industry classification system which was developed using the Global Industry Classification Standard (“GICS”®) as a reference. All investments are ultimately focused in enterprise software, data and technology-enabled business sectors.
[2] Unless otherwise indicated, all investments held by the Company (the “Company” includes the Company’s consolidated subsidiaries for purposes of this Consolidated Schedule of Investments) are denominated in U.S. dollars and headquartered in the United States. All investments are income producing unless otherwise indicated. Certain portfolio company investments are subject to contractual restrictions on sales. The total par amount (in thousands) is presented for all debt investment and preferred equity. Unit amount is presented for Other Equity, with the exception of HPC GPFS Arsenal Co-Invest (Cayman) LP, HPC Preferred Opportunities, L.P. and Tactical Equipment III, L.P., which presents investment cost.
[3] The Company uses an internally developed industry classification system which was developed using the Global Industry Classification Standard (“GICS”®) as a reference. All investments are ultimately focused in enterprise software, data and technology-enabled business sectors.
[4] The following table shows the portfolio composition by geographic region at amortized cost and fair value as a percentage of total investments in portfolio companies. The geographic composition is determined by the location of the corporate headquarters of the portfolio company, which is not always indicative of the primary source of the portfolio company’s business:
[5] Unless otherwise indicated, all investments held by the Company (the “Company” includes the Company’s consolidated subsidiaries for purposes of this Consolidated Schedule of Investments) are denominated in U.S. dollars and headquartered in the United States. All investments are income producing unless otherwise indicated. Certain portfolio company investments are subject to contractual restrictions on sales. The total par amount (in thousands) is presented for all debt investment and preferred equity. Unit amount is presented for Other Equity, with the exception of HPC GPFS Arsenal Co-Invest (Cayman) LP and Tactical Equipment III, L.P., which presents investment cost.
[6] Amounts represent the Company’s investments in HPC GPFS Arsenal Co-Invest (Cayman) LP, HPC Preferred Opportunities, L.P. and Tactical Equipment III, L.P. The Company, as a practical expedient, estimates the fair value of these investments using the net asset value of the Company’s interests in HPC GPFS Arsenal Co-Invest (Cayman) LP, HPC Preferred Opportunities, L.P. and Tactical Equipment III, L.P. As such, the fair value of the Company’s investments in HPC GPFS Arsenal Co-Invest (Cayman) LP, HPC Preferred Opportunities, L.P. and Tactical Equipment III, L.P. have not been categorized within the fair value hierarchy.
[7] Amounts represent the Company’s investments in HPC GPFS Arsenal Co-Invest (Cayman) LP and Tactical Equipment III, L.P. The Company, as a practical expedient, estimates the fair value of these investments using the net asset value of the Company’s interests in HPC GPFS Arsenal Co-Invest (Cayman) LP and Tactical Equipment III, L.P. As such, the fair value of the Company’s investments in HPC GPFS Arsenal Co-Invest (Cayman) LP and Tactical Equipment III, L.P. have not been categorized within the fair value hierarchy.