Sixth Street Specialty Lending, Inc. Overview
Pro stress-test →Sixth Street Specialty Lending is a specialty finance company focused on lending to middle-market companies. The company is regulated as a business development company (BDC) under the Investment Company Act of 1940, and has originated approximately $53.3 billion in aggregate principal amount of investments since July 2011 through December 31, 2025.
Strategic Profile
Pro stress-test →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.
Competitive Landscape
Pro stress-test →TSLX competes with other BDCs including Golub Capital BDC, Carlyle Secured Lending, Hercules Capital, BlackRock TCP Capital Corp., Trinity Capital Inc., and Crescent Capital BDC. TSLX differentiates through its parent firm's $125+ billion AUM platform and focus on complex senior secured middle-market lending with strong underwriting capabilities.
Industry Context
Sixth Street Specialty Lending, Inc. operates in Specialty Finance / Business Development Company (BDC).
Key facts
Founded: 2011 · Headquarters: New York, US · Revenue: $106.1M (Q4 2025 estimated)