Sixth Street Specialty Lending, Inc. — Cyborg Score 7/10
Strong
Specialty Finance / Business Development Company (BDC)
Strategic Profile
TSLX seeks to generate current income primarily in U.S.-domiciled middle-market companies through direct originations of senior secured loans and, to a lesser extent, originations of mezzanine and unsecured loans and investments in corporate bonds and equity securities. The company leverages the deep investment, sector, and operating resources of Sixth Street, a global investment firm with over $125+ billion of assets under management. TSLX is a differentiated BDC focused on complex, senior secured lending, with strong underwriting and high portfolio yields.
Cyborg Score Rationale
TSLX has 40% software exposure and high portfolio yields with spillover income support. The dividend is 113% covered by NII, with $1.21 per share in spillover income and a floating-rate debt structure. However, the company has missed Wall Street's revenue estimates five times over the last two years.
Top Insights
As of December 31, 2025, TSLX portfolio had a fair value of approximately $3,346.3 million invested across 143 portfolio companies.
40% software exposure is higher than peers, but downside is mitigated by a 40% LTV and management's experience.
96.3% of debt investments bore interest at floating-rates, which helps act as a portfolio-wide hedge.
Leadership transition underway with Chairman Joshua Easterly retiring June 30, 2026, while Robert "Bo" Stanley is named Co-Chief Investment Officer to ensure continuity.
Named Competitors
Golub Capital BDC — Multi-strategy BDC providing financing to middle-market companies
Carlyle Secured Lending — Direct lending and structured credit platform
Hercules Capital — Growth capital provider for lower middle-market companies
BlackRock TCP Capital — BDC focused on senior loans and structured credit
Recent Developments
(February 2026) Chairman Joshua Easterly announced retirement effective June 30, 2026, with orderly succession planning in place
(Q4 2025) Portfolio reached $3.3 billion in fair value across 143 portfolio companies
(Early 2026) Announced $300 million public offering of 2.500% unsecured notes due 2026 for debt refinancing and new investments
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