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Sixth Street Specialty Lending, Inc.: Business Overview, Financials & Competitive Analysis

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, a...

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Sixth Street Specialty Lending, Inc. OverviewStrategic ProfileCompetitive LandscapeIndustry ContextKey facts
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7/ 10Strong

Cyborg Score thesis

TSLX offers attractive high-yield lending exposure with strong portfolio diversification and dividend coverage, supported by...

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Industry Specialty Finance / Business Development Company (BDC)
4 named competitors
3 recent developments
11 analyst dimensions
Synthesized from analyst-debate stress-testing across 11 dimensions and hundreds of data points. Methodology →
Cyborg Score recalibrated: October 19, 2026
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Sixth Street Specialty Lending, Inc. Overview

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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

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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

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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)

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Recent developments

Material events tracked by the AskCyborg corpus.

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Named competitors

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Golub Capital BDCMulti-strategy BDC providing financing to middle-market companies→Carlyle Secured LendingDirect lending and structured credit platform→Hercules CapitalGrowth capital provider for lower middle-market companies→BlackRock TCP CapitalBDC focused on senior loans and structured credit→

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Industry context

Sixth Street Specialty Lending, Inc. operates in Specialty Finance / Business Development Company (BDC). See how the rest of the sector scores on the Cyborg framework.

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Frequently asked questions

What does Sixth Street Specialty Lending, Inc. do?+
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, a...
What is Sixth Street Specialty Lending, Inc.'s Cyborg Score?+
Sixth Street Specialty Lending, Inc. has a Cyborg Score of 7/10 (Strong). The score synthesizes business model, financials, leadership, competitive position, technology, marketing, and ESG dimensions across hundreds of data points.
Who are Sixth Street Specialty Lending, Inc.'s main competitors?+
Named competitors include Golub Capital BDC, Carlyle Secured Lending, Hercules Capital, BlackRock TCP Capital. The full competitive landscape is in the AskCyborg report.
How can I get the full Sixth Street Specialty Lending, Inc. research report?+
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The Cyborg Score is recalibrated weekly. Recent developments are tracked continuously and surfaced in every report.

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