v3.26.1
Derivative Instruments
 9 Months Ended
Jun. 30, 2026
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivative Instruments Derivative Instruments
The Company enters into foreign currency forward contracts from time to time to help mitigate the impact that an adverse change in foreign exchange rates would have on the value of the Company’s investments denominated in foreign currencies. In order to better define its contractual rights and to secure rights that will help the Company mitigate its counterparty risk, the Company entered into International Swaps and Derivatives Association, Inc. Master Agreements (the "ISDA Master Agreements") with its derivative counterparties, BNP Paribas, ING Capital Markets LLC, JPMorgan Chase Bank, N.A, Royal Bank of Canada and Wells Fargo Bank, N.A. The ISDA Master Agreements permit a single net payment, with each counterparty, in the event of a default or similar event. As of June 30, 2026, no cash collateral has been pledged to cover obligations and no cash collateral has been received from the counterparties with respect to the Company's forward currency contracts.
Certain information related to the Company’s foreign currency forward contracts is presented below as of June 30, 2026.
DescriptionNotional Amount to be PurchasedNotional Amount to be SoldMaturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet Location of Net Amounts
Foreign currency forward contract$5,424 C$7,503 9/10/2026$119 $— Derivative asset
Foreign currency forward contract$182,243 €156,152 9/10/20263,196 — Derivative asset
Foreign currency forward contract$647 $739 9/10/20263 — Derivative asset
Foreign currency forward contract$65,167 £48,466 9/10/2026840 — Derivative asset
Foreign currency forward contract€3,825 £2,907 9/10/2026— 33 Derivative asset
Foreign currency forward contract$5,027 ¥797,959 9/10/202690 — Derivative asset
Foreign currency forward contract$8,912 kr82,888 9/10/2026314 — Derivative asset
$4,562 $33 
Certain information related to the Company’s foreign currency forward contracts is presented below as of September 30, 2025.
DescriptionNotional Amount to be PurchasedNotional Amount to be SoldMaturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet Location of Net Amounts
Foreign currency forward contract$173,478 €146,324 3/12/2026$55 $— Derivative asset
Foreign currency forward contract$5,427 C$7,442 3/12/202640 — Derivative asset
Foreign currency forward contract$5,450 ¥785,888 3/12/202646 — Derivative asset
Foreign currency forward contract$8,976 kr83,244 12/11/202586 — Derivative asset
Foreign currency forward contract$37,547 £27,697 12/11/2025256 — Derivative asset
Foreign currency forward contract$8,868 £6,534 12/11/202570 — Derivative asset
$553 $— 
In connection with the issuance of the 2027 Notes, 2029 Notes and the 2030 Notes, the Company entered into interest rate swap agreements with the Royal Bank of Canada and BNP Paribas pursuant to ISDA Master Agreements. As of June 30, 2026 and September 30, 2025, the Company paid $1.8 million and $15.6 million, respectively, to cover collateral obligations under the terms of the interest swap agreements, which is included in due from broker on the Consolidated Statement of Assets and Liabilities.
Certain information related to the Company’s interest rate swaps is presented below as of June 30, 2026.
DescriptionNotional AmountMaturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet Location of Net Amounts
Interest rate swap$350,000 1/15/2027$— $5,919 Derivative liability
Interest rate swap300,000 2/15/2029— 780 Derivative liability
Interest rate swap300,000 2/27/20301,286 — Derivative asset
$1,286 $6,699 
Certain information related to the Company’s interest rate swap is presented below as of September 30, 2025.
DescriptionNotional AmountMaturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet Location of Net Amounts
Interest rate swap$350,000 1/15/2027$— $12,150 Derivative liability
Interest rate swap300,000 2/15/20294,821 — Derivative liability
Interest rate swap300,000 2/27/20308,160 — Derivative asset
$12,981 $12,150