Sixth Street Specialty Lending, Inc. (TSLX)

NII per share of $0.43 covers the declared base dividend of $0.42 at 102%, placing coverage squarely in the 95–105% range. The company maintains a supplemental dividend policy to distribute over-earnings, with no supplemental paid in Q2 2026 but $0.09 LTM supplemental, indicating flexible capital distribution aligned with rate environment. No dividend cuts have occurred over the 5+ year history evident in the data, and the stable 11.1–11.2% portfolio yield with 96.1% floating-rate debt provides rate sensitivity. Coverage is stable rather than growing, and the modest 2% cushion above the base dividend reflects a mature, well-managed BDC operating near its sustainable distribution level.

TSLX demonstrates leverage at the band edges with a debt-to-equity ratio of 1.27x (Q2 2026 quarter-end) and 1.24x average, positioning it near typical BDC leverage bands. The funding profile is mixed, comprising 79% unsecured and 21% secured debt, with a weighted average debt maturity of approximately 3.8 years providing adequate laddering. The company maintains solid liquidity with $1.243 billion in total liquidity pre-unfunded commitments and $1.086 billion of undrawn revolver capacity. However, the company is not explicitly IG-rated in the provided materials, and the leverage metrics sit at band edges rather than comfortably inside, warranting a mid-range score rather than the highest anchor.

Non-accruals at 1.3% of fair value are well below the 5% threshold and approaching the <1% anchor for a score of 5, placing performance solidly in the 4-5 range. The earnings release provides no disclosure of PIK income as a percentage of total income, preventing full assessment of that rubric component. Net realized gains of $0.01 per share were modest but positive during the quarter, with net unrealized gains of $0.06 per share from equity multiples offsetting $0.04 per share of credit spread losses, demonstrating reasonable portfolio performance. The absence of PIK disclosure and the non-accrual rate just above 1% prevent a perfect 5 score, but the overall portfolio quality metrics support a strong 4.

TSLX demonstrates strong portfolio quality with 88.3% first-lien debt investments, well above the 80% threshold for a score of 5. The portfolio shows granular diversification across 137 portfolio companies with an average investment size of $30.9 million (0.9% of portfolio), indicating top-10 concentration well below 20%. Non-accruals are minimal at 1.3% of fair value. However, the portfolio includes 4.7% equity investments and 2.7% structured credit investments, which introduce some non-traditional elements that prevent a perfect 5 score. The company's weighted average yield of 11.1-11.2% and strong net investment income of $0.43 per share reflect quality credit selection, though the presence of junior capital and alternative investments slightly moderates the defensive positioning relative to the 5-anchor criteria.

TSLX operates with an external manager (Sixth Street Partners) under a standard BDC fee structure. NAV per share has declined from $17.17 in Q2 2025 to $16.24 in Q2 2026 (a 5.4% decline year-over-year), and from $16.98 at year-end 2025 to $16.24 currently, indicating NAV erosion rather than growth. The earnings release does not disclose specific fee terms, but the company's operational metrics—10.6% ROE on NII, 93% payout coverage, and modest portfolio performance—are consistent with a standard external management arrangement. Without evidence of shareholder-friendly structures like net-asset base fees or elevated hurdles, the score reflects a typical external manager setup with flat-to-declining NAV performance.

Valuation scored against the same-category peer cross-section (peer_fallback) from this nightly pass, because this name has fewer than 8 own-history points so far.