Sixth Street Specialty Lending, Inc.
TSLX- Exchange
- NYSE
- SEC CIK
- 0001508655
No open-market purchases or sales by Sixth Street Specialty Lending, Inc. insiders were filed in the last 90 days; 242 institutions reported holding it in 13F filings for Q2 2026, worth $896.5M in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Sixth Street Specialty Lending, Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 247
- +7 vs. Q2 2025
- Shares held
- 48.7M
- +23.1K (0.0%) vs. Q2 2025
- Total value
- $1.11B
- −$46.5M (−4.0%) vs. Q2 2025
- New holders
- 35
- 94 more added
- Sold out
- 28
- 65 more reduced
5 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting TSLX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 242 | $896.5M |
| Q1 2026 | 260 | $955.4M |
| Q4 2025 | 258 | $1.09B |
| Q3 2025 | 247 | $1.11B |
| Q2 2025 | 245 | $1.16B |
| Q1 2025 | 236 | $1.07B |
| Q4 2024 | 223 | $963.5M |
| Q3 2024 | 202 | $904.9M |
| Q2 2024 | 224 | $962.2M |
| Q1 2024 | 220 | $936.0M |
| Q4 2023 | 223 | $889.5M |
| Q3 2023 | 205 | $806.6M |
| Q2 2023 | 202 | $705.0M |
| Q1 2023 | 195 | $621.2M |
| Q4 2022 | 196 | $643.2M |
| Q3 2022 | 175 | $601.1M |
| Q2 2022 | 180 | $655.5M |
| Q1 2022 | 171 | $825.9M |
| Q4 2021 | 168 | $855.4M |
| Q3 2021 | 159 | $813.5M |
| Q2 2021 | 158 | $808.3M |
| Q1 2021 | 159 | $758.6M |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Sixth Street Specialty Lending, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Guerra Advisors Inc | 0 | $9 | 0.00% | 0 | New |
| National Bank of Canada | 5 | $114 | 0.00% | +5 | New |
| Assetmark, Inc | 11 | $251 | 0.00% | +11 | New |
| FMR LLC | 34 | $777 | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 37 | $846 | 0.00% | 00.0% | Unchanged |
| SJS Investment Consulting Inc. | 44 | $999 | 0.00% | +1+2.3% | Added |
| Hager Investment Management Services, LLC | 56 | $1.28K | 0.00% | +1+1.8% | Added |
| Russell Investments Group, Ltd. | 96 | $2.19K | 0.00% | +2+2.1% | Added |
| Brown Brothers Harriman & Co | 100 | $2.29K | 0.00% | 00.0% | Unchanged |
| Glen Eagle Advisors, LLC | 100 | $2.29K | 0.00% | 00.0% | Unchanged |
| Provenance Wealth Advisors, LLC | 100 | $2.29K | 0.00% | 00.0% | Unchanged |
| Wealthspire Advisors, LLC | 121 | $2.77K | 0.00% | +121 | New |
| Larson Financial Group LLC | 164 | $3.75K | 0.00% | +3+1.9% | Added |
| Harbour Investments, Inc. | 178 | $4.07K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 224 | $5.12K | 0.00% | +5+2.3% | Added |
| WealthCollab, LLC | 225 | $5.14K | 0.00% | 00.0% | Unchanged |
| Delta Asset Management LLC | 250 | $5.71K | 0.00% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 311 | $7.11K | 0.00% | +311 | New |
| Alerus Financial NA | 325 | $7.43K | 0.00% | +325 | New |
| Allworth Financial LP | 343 | $7.84K | 0.00% | +9+2.7% | Added |
| Atlantic Union Bankshares Corp | 400 | $9.14K | 0.00% | +400 | New |
| Blume Capital Management, Inc. | 450 | $10.3K | 0.00% | 00.0% | Unchanged |
| Valley National Advisers Inc | 500 | $11.0K | 0.00% | 00.0% | Unchanged |
| AllSquare Wealth Management LLC | 500 | $11.4K | 0.01% | 00.0% | Unchanged |
| Greykasell Wealth Strategies, Inc. | 509 | $11.6K | 0.00% | +12+2.4% | Added |
| Westside Investment Management, Inc. | 572 | $12.7K | 0.00% | +286+100.0% | Added |
| Private Trust Co NA | 600 | $13.7K | 0.00% | 00.0% | Unchanged |
| Bartlett & Co. Wealth Management LLC | 700 | $16.0K | 0.00% | 00.0% | Unchanged |
| Community Bank, N.A. | 1,000 | $22.9K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 1,001 | $22.9K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 1,011 | $23.1K | 0.00% | +407+67.4% | Added |
| First Community Trust NA | 1,040 | $23.8K | 0.02% | 00.0% | Unchanged |
| Geneos Wealth Management Inc. | 1,525 | $34.9K | 0.00% | −221−12.7% | Reduced |
| EverSource Wealth Advisors, LLC | 1,530 | $35.0K | 0.00% | +469+44.2% | Added |
| Trust Co of Vermont | 1,584 | $36.2K | 0.00% | 00.0% | Unchanged |
| BI Asset Management Fondsmaeglerselskab A/S | 1,919 | $44.0K | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 2,000 | $45.7K | 0.00% | 00.0% | Unchanged |
| MTM Investment Management, LLC | 2,040 | $46.6K | 0.01% | 00.0% | Unchanged |
| CIBC Private Wealth Group, LLC | 2,144 | $49.0K | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 2,200 | $50.3K | 0.02% | 00.0% | Unchanged |
| Rossby Financial, LCC | 2,916 | $64.6K | 0.02% | −67−2.2% | Reduced |
| Global Retirement Partners, LLC | 3,034 | $69.4K | 0.00% | +209+7.4% | Added |
| MAI Capital Management | 3,115 | $71.2K | 0.00% | −1,149−26.9% | Reduced |
| Advisory Services Network, LLC | 3,261 | $74.5K | 0.00% | +3,261 | New |
| Redmont Wealth Advisors LLC | 3,466 | $79.2K | 0.11% | −141−3.9% | Reduced |
| Federation des caisses Desjardins du Quebec | 4,000 | $91.4K | 0.00% | 00.0% | Unchanged |
| Future Financial Wealth Managment LLC | 4,200 | $96.0K | 0.06% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 4,289 | $98.0K | 0.00% | +4,289 | New |
| Signaturefd, LLC | 4,564 | $104.3K | 0.00% | −95−2.0% | Reduced |
| Farther Finance Advisors, LLC | 4,700 | $107.4K | 0.00% | +4,033+604.6% | Added |
| Simplex Trading, LLC | 4,764 | $108.0K | 0.00% | +4,764 | New |
| Frazier Financial Advisors, LLC | 4,814 | $110.0K | 0.07% | 00.0% | Unchanged |
| Comerica Bank | 5,096 | $116.5K | 0.00% | −4,184−45.1% | Reduced |
| Annis Gardner Whiting Capital Advisors, LLC | 5,235 | $119.7K | 0.02% | 00.0% | Unchanged |
| Vaughan Nelson Investment Management, L.P. | 5,350 | $122.3K | 0.00% | 00.0% | Unchanged |
| EMC Capital Management | 6,120 | $140.0K | 0.07% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 7,341 | $167.8K | 0.00% | 00.0% | Unchanged |
| Pasadena Private Wealth, LLC | 9,000 | $205.7K | 0.03% | −1,090−10.8% | Reduced |
| Csenge Advisory Group | 9,000 | $205.7K | 0.01% | +9,000 | New |
| Register Financial Advisors LLC | 9,083 | $207.6K | 0.08% | +1,418+18.5% | Added |
| Empowered Funds, LLC | 9,108 | $208.2K | 0.00% | +9,108 | New |
| Maia Wealth LLC | 10,000 | $209.9K | 0.04% | +10,000 | New |
| AE Wealth Management LLC | 9,459 | $216.2K | 0.00% | +98+1.0% | Added |
| Stratos Wealth Partners, LTD. | 9,515 | $217.5K | 0.00% | +31+0.3% | Added |
| Glenview Trust Co | 9,700 | $221.7K | 0.00% | 00.0% | Unchanged |
| Robertson Stephens Wealth Management, LLC | 9,700 | $221.7K | 0.01% | 00.0% | Unchanged |
| Virtu Financial LLC | 10,268 | $235.0K | 0.01% | +10,268 | New |
| Advisory Research Inc | 10,338 | $236.3K | 0.03% | −226−2.1% | Reduced |
| Nomura Asset Management Co Ltd | 10,789 | $246.6K | 0.00% | +4,201+63.8% | Added |
| Steward Partners Investment Advisory, LLC | 10,861 | $248.3K | 0.00% | −8,641−44.3% | Reduced |
| Brevan Howard Capital Management LP | 10,952 | $250.4K | 0.00% | +10,952 | New |
| Oppenheimer & Co Inc | 11,297 | $258.2K | 0.00% | +11,297 | New |
| Wetherby Asset Management Inc | 11,514 | $263.2K | 0.01% | 00.0% | Unchanged |
| Core Wealth Partners LLC | 11,668 | $266.7K | 0.12% | 00.0% | Unchanged |
| Principle Wealth Partners LLC | 11,701 | $267.5K | 0.02% | 00.0% | Unchanged |
| Caxton Associates LLP | 11,730 | $268.1K | 0.01% | +11,730 | New |
| Grimes & Company, Inc. | 11,924 | $272.6K | 0.01% | −237−1.9% | Reduced |
| GWM Advisors LLC | 12,493 | $285.6K | 0.00% | +10,821+647.2% | Added |
| Westmount Partners, LLC | 13,030 | $288.6K | 0.07% | 00.0% | Unchanged |
| Worth Asset Management, LLC | 12,656 | $289.3K | 0.13% | −1,666−11.6% | Reduced |
| Mercer Global Advisors Inc | 13,621 | $311.4K | 0.00% | +4,888+56.0% | Added |
| Inspirion Wealth Advisors, LLC | 15,426 | $316.7K | 0.04% | 00.0% | Unchanged |
| Catalytic Wealth RIA, LLC | 14,000 | $320.0K | 0.01% | +14,000 | New |
| Principal Street Partners, LLC | 14,570 | $333.1K | 0.05% | 00.0% | Unchanged |
| Mirae Asset Global Investments Co., Ltd. | 14,759 | $337.4K | 0.00% | −291−1.9% | Reduced |
| Mallini Complete Financial Planning LLC | 15,341 | $350.7K | 0.29% | +115+0.8% | Added |
| Bank of New York Mellon Corp | 15,609 | $356.8K | 0.00% | +3,014+23.9% | Added |
| Heritage Trust Co | 15,889 | $363.2K | 0.04% | +309+2.0% | Added |
| Evergreen Capital Management LLC | 16,513 | $377.5K | 0.01% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 18,000 | $411.5K | 0.01% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 18,041 | $412.4K | 0.01% | +29+0.2% | Added |
| Eagle Global Advisors LLC | 18,295 | $418.2K | 0.02% | +4,145+29.3% | Added |
| Integrated Wealth Concepts LLC | 18,462 | $422.0K | 0.00% | +123+0.7% | Added |
| Sanctuary Advisors, LLC | 18,558 | $424.2K | 0.00% | −4,977−21.1% | Reduced |
| Monument Capital Management | 18,582 | $424.8K | 0.11% | +18,582 | New |
| Capstone Investment Advisors, LLC | 19,056 | $435.6K | 0.00% | +19,056 | New |
| Klein Pavlis & Peasley Financial, Inc. | 19,145 | $437.7K | 0.27% | +19,145 | New |
| London & Capital Asset Management Ltd | 19,400 | $443.5K | 0.03% | 00.0% | Unchanged |
| Wiley Bros.-Aintree Capital, LLC | 19,605 | $448.2K | 0.00% | +19,605 | New |
| Delphi Financial Group, Inc. | 20,041 | $458.1K | 0.26% | 00.0% | Unchanged |