As of June 30, 2020, non-accruals represented 1.3% of the debt portfolio at cost and 0.2% at fair value in three positions. During the quarter ended June 30, 2020, the Company placed one new investment on non-accrual status, which represented 0.1% of the debt portfolio at both cost and fair value, and the Company exited one investment that was previously on non-accrual status.
The Company’s investments in SLF JV I totaled $110.0 million at fair value as of June 30, 2020, up 19% from $92.2 million as of March 31, 2020. The sequential increase in the value of the Company’s investments in SLF JV I was primarily driven by SLF JV I’s use of leverage and unrealized appreciation in the underlying investment portfolio resulting from the improvement in broader credit market conditions during the quarter.
As of June 30, 2020, SLF JV I had $315.4 million in assets, including senior secured loans to 53 portfolio companies. This compared to $329.6 million in assets, including senior secured loans to 53 portfolio companies, as of March 31, 2020. As of June 30, 2020, one investment held by SLF JV I was on non-accrual status, which represented 0.7% of the SLF JV I portfolio at cost and 0.3% at fair value, respectively. The joint venture generated income of $2.0 million for the Company during the quarter ended June 30, 2020, down slightly as compared to the prior quarter. As of June 30, 2020, SLF JV I had $76.1 million of undrawn capacity (subject to borrowing base and other limitations) on its $250 million senior revolving credit facility, and its debt to equity ratio was 1.4x.
Liquidity and Capital Resources
As of June 30, 2020, the Company had total principal value of debt outstanding of $766.8 million, including $466.8 million of outstanding borrowings under the revolving credit facility and $300 million of unsecured notes. The funding mix was composed of 61% secured and 39% unsecured borrowings as of June 30, 2020. The Company has no near-term debt maturities, as the next scheduled maturity is for the revolving credit facility in February 2024. The Company was in compliance with all financial covenants under its credit facility as of June 30, 2020.
As of June 30, 2020, the Company had $50.7 million of unrestricted cash and cash equivalents and $233.2 million of undrawn capacity on its credit facility (subject to borrowing base and other limitations). Unfunded investment commitments were $154.6 million as of June 30, 2020, with approximately $75.9 million that can be drawn immediately as the remaining amount is subject to certain milestones that must be met by portfolio companies. The Company has analyzed cash and cash equivalents, availability under our credit facility, the ability to rotate out of certain assets and amounts of unfunded commitments that could be drawn and believe our liquidity and capital resources are sufficient to take advantage of market opportunities in the current economic climate.
As of June 30, 2020, the weighted average interest rate on debt outstanding was 2.7%, down from 3.1% as of March 31, 2020, primarily reflecting lower LIBOR.
The Company’s total debt to equity ratio was 0.89x and 0.94x as of June 30, 2020 and March 31, 2020, respectively. Net debt to equity ratio was 0.83x and 0.82x as of June 30, 2020 and March 31, 2020, respectively.
Non-GAAP Financial Measures
Adjusted Net Investment Income
On a supplemental basis, the Company is disclosing adjusted net investment income and per share adjusted net investment income, each of which is a financial measure that is calculated and presented on a basis of methodology other than in accordance with U.S. GAAP (“non-GAAP”). Adjusted net investment income represents net investment income, excluding capital gains incentive fees (“Part II incentive fee”). The Company’s management uses this non-GAAP financial measure internally to analyze and evaluate financial results and performance and believes that this non-GAAP financial measure is useful to investors as an additional tool to evaluate ongoing results and trends for the Company without giving effect to capital gains incentive fees. The Company’s investment advisory agreement provides that a capital gains-based incentive fee is determined and paid annually with respect to realized capital gains (but not unrealized capital appreciation) to the extent such realized capital gains exceed realized capital losses and unrealized capital depreciation on a cumulative basis. Refer to Note 11 – Related Party Transactions in our Quarterly Report on Form 10-Q for further discussion. The Company believes that adjusted net investment income is a useful performance measure because it reflects the net investment income produced on the Company’s investments during a period without giving effect to any changes in the value of such investments and any related capital gains incentive fees between periods. The presentation of adjusted net investment income is not intended to be a substitute for financial results prepared in accordance with GAAP and should not be considered in isolation.
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