With a market capitalization (market cap) of $1.71B — a measure of how much the company is worth — Sixth Street Specialty Lending, Inc. ranks #2,161 among the 2,510 companies tracked, and 347th in Financial Services as of October 2, 2026. Shares trade at $18.01, down 0.44% on the day.
of 2,510 tracked
Market-cap change uses historical capitalization records. Share-price returns are a different series — they can diverge when the share count changes. Those returns are not a CAGR until you pick a start value, an ending value, and years. CAGR calculator. Market cap vs. stock price.
Year-end values and the chart both come from historical market-cap records, not from applying today's share count to past prices. Latest historical observation October 2, 2026. Ranking headline cap is the snapshot figure as of October 2, 2026.
| Year | As of | Market cap | Annual change | Year-end close |
|---|---|---|---|---|
| 2026 | Oct 2, 2026 | $1.71B | -16.81% | $18.01 |
| 2025 | Dec 31, 2025 | $2.06B | +3.10% | $21.72 |
| 2024 | Dec 31, 2024 | $2B | +5.17% | $21.30 |
| 2023 | Dec 29, 2023 | $1.9B | +30.95% | $21.60 |
Ranking figure $1.71B as of October 2, 2026.
Sixth Street Specialty Lending, Inc.'s ranking market cap is the provider-reported capitalization on the same snapshot as the rest of this site, with a share price of $18.01 as of October 2, 2026. Charts and the year-end table use a separate historical market-cap series, last observed at $1.71B on October 2, 2026. See how the ranking works.
Live shares outstanding are not on the quote used for price, so this page does not invent a current share count. Shares outstanding vs. float.
The latest annual report (FY 2025) used a weighted-average 94,705,150 shares. That figure is an average for the year, not the live count in the market-cap formula.
Book equity: assets minus liabilities on the latest annual report.
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FY 2025 net worth
Largest U.S.-listed names in the same FMP sector — not a hand-picked competitor set.
| Rank | Company | Market cap | 1D |
|---|---|---|---|
| #13 | Berkshire Hathaway Inc. BRK-B | $1.08T | +0.43% |
| #16 | JPMorgan Chase & Co. JPM | $890.62B | -0.24% |
| #20 |
Sixth Street Specialty Lending, Inc. (TSLX) functions as a specialized Business Development Company. It provides a wide array of financing solutions, including various forms of debt such as senior secured loans (encompassing first-lien, second-lien, and unitranche facilities), unsecured loans, and mezzanine debt. The firm also strategically allocates capital to corporate bonds, equity securities, structured products, non-control structured equity, and common equity, frequently engaging in co-investments.
Summary from the company profile (Financial Modeling Prep). Principal financial figures above are for FY 2025.
Visit websiteAs of October 2, 2026, Sixth Street Specialty Lending, Inc. (TSLX) is worth $1.71B — that is its market capitalization, the total value of its outstanding shares on MarketCapLens.
A company’s net worth is its shareholders’ equity: assets minus liabilities on the balance sheet. That is book equity, not market cap. For FY 2025, Sixth Street Specialty Lending, Inc.’s book equity is about $1.61B. Market cap is the market value of the outstanding shares. As of October 2, 2026, its market cap is $1.71B. Book equity is an accounting remainder; market cap is a trading value. Neither is a person’s net worth.
Sixth Street Specialty Lending, Inc. ranks #2,161 among the 2,510 companies tracked on MarketCapLens. In Financial Services it ranks #347 of 412.
Fundamentals are annual. Figures labeled with their fiscal year. Live ratios use the current price against those annual earnings.
| 2022 |
|---|
| Dec 30, 2022 |
| $1.45B |
| -22.18% |
| $17.80 |
| 2021 | Dec 31, 2021 | $1.86B | — | $23.39 |
|---|
Last observation of each calendar year from historical market-cap records. The current year is through the latest date, not a completed year-end. Share-price close is the matching session for context — we do not rebuild cap from today's share count.
Not in this snapshot
FY 2025
| $673.37B |
| +0.23% |
| #23 | Mastercard Incorporated MA | $484.35B | +0.41% |
| #33 | Bank of America Corporation BAC | $381.44B | +0.04% |
| #39 | HSBC Holdings plc HSBC | $330.41B | +0.33% |
Companies immediately above and below in the overall ranking. They may be in a different sector.
| Rank | Company | Market cap | 1D |
|---|---|---|---|
| #2158 | Byline Bancorp, Inc. BY | $1.71B | +1.48% |
| #2159 | Intellia Therapeutics, Inc. NTLA | $1.71B | +1.16% |
| #2160 | Bank First Corporation BFC | $1.71B | +2.07% |
| #2162 | National Bank Holdings Corporation NBHC | $1.7B | -2.83% |
| #2163 | RLJ Lodging Trust RLJ | $1.7B | +1.63% |
| #2164 | NETSTREIT Corp. NTST | $1.7B | +0.75% |
Sixth Street Specialty Lending, Inc.’s ranking market cap of $1.71B comes from the same snapshot as the rest of this site, as of October 2, 2026. It is not share price multiplied by the FY 2025 weighted-average share count of 94,705,150. The historical market-cap series last observed $1.71B on October 2, 2026.
Over the past year, Sixth Street Specialty Lending, Inc.’s market cap is down 19.72%, using historical market-cap records rather than today’s share count applied to past prices.
Sixth Street Specialty Lending, Inc. (TSLX) shares trade at $18.01, down 0.44% on the day, as of October 2, 2026.
Sixth Street Specialty Lending, Inc. trades at a live price-to-earnings (P/E) ratio of 10.0, using the latest share price divided by the latest annual earnings per share. That is not the same as a fiscal-year reported P/E.