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, Q4 2025
Institutional positions in Sixth Street Specialty Lending, Inc. as of Dec 31, 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
- 258
- +15 vs. Q3 2025
- Shares held
- 50.3M
- +3.99M (+8.6%) vs. Q3 2025
- Total value
- $1.09B
- +$40.1M (+3.8%) vs. Q3 2025
- New holders
- 38
- 103 more added
- Sold out
- 23
- 67 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Sixth Street Specialty Lending, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Frazier Financial Advisors, LLC | 4,814 | $104.6K | 0.06% | 00.0% | Unchanged |
| Redmont Wealth Advisors LLC | 4,776 | $103.7K | 0.16% | +1,310+37.8% | Added |
| State of Alaska, Department of Revenue | 4,529 | $98.0K | 0.00% | +240+5.6% | Added |
| Federation des caisses Desjardins du Quebec | 4,000 | $86.9K | 0.00% | 00.0% | Unchanged |
| Titiun Yejiel | 4,000 | $86.9K | 0.11% | +4,000 | New |
| Farther Finance Advisors, LLC | 3,425 | $74.4K | 0.00% | −1,275−27.1% | Reduced |
| MAI Capital Management | 3,133 | $68.1K | 0.00% | +18+0.6% | Added |
| Nomura Asset Management Co Ltd | 2,239 | $48.6K | 0.00% | −8,550−79.2% | Reduced |
| AdvisorNet Financial, Inc | 2,200 | $47.8K | 0.00% | +200+10.0% | Added |
| CIBC Private Wealth Group, LLC | 2,144 | $46.6K | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 2,044 | $44.4K | 0.00% | −990−32.6% | Reduced |
| MTM Investment Management, LLC | 2,040 | $44.3K | 0.01% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 2,011 | $43.7K | 0.00% | +1,000+98.9% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 1,959 | $43.0K | 0.00% | +40+2.1% | Added |
| EverSource Wealth Advisors, LLC | 1,893 | $41.1K | 0.00% | +363+23.7% | Added |
| Harbor Investment Advisory, LLC | 1,732 | $37.6K | 0.00% | +1,508+673.2% | Added |
| Trust Co of Vermont | 1,584 | $34.4K | 0.00% | 00.0% | Unchanged |
| Geneos Wealth Management Inc. | 1,525 | $33.1K | 0.00% | 00.0% | Unchanged |
| First Community Trust NA | 1,040 | $22.6K | 0.02% | 00.0% | Unchanged |
| Huntington National Bank | 1,001 | $21.7K | 0.00% | 00.0% | Unchanged |
| Community Bank, N.A. | 1,000 | $21.7K | 0.00% | 00.0% | Unchanged |
| Bartlett & Co. Wealth Management LLC | 700 | $15.2K | 0.00% | 00.0% | Unchanged |
| International Assets Investment Management, LLC | 644 | $14.0K | 0.00% | +644 | New |
| Private Trust Co NA | 600 | $13.0K | 0.00% | 00.0% | Unchanged |
| Westside Investment Management, Inc. | 572 | $12.4K | 0.00% | 00.0% | Unchanged |
| Greykasell Wealth Strategies, Inc. | 520 | $11.3K | 0.00% | +11+2.2% | Added |
| Valley National Advisers Inc | 500 | $10.0K | 0.00% | 00.0% | Unchanged |
| Blume Capital Management, Inc. | 450 | $9.77K | 0.00% | 00.0% | Unchanged |
| Flagship Harbor Advisors, LLC | 419 | $9.11K | 0.00% | +419 | New |
| Atlantic Union Bankshares Corp | 400 | $8.69K | 0.00% | 00.0% | Unchanged |
| Rossby Financial, LCC | 397 | $8.62K | 0.00% | −2,519−86.4% | Reduced |
| WealthCollab, LLC | 340 | $7.38K | 0.00% | +115+51.1% | Added |
| Quadrant Capital Group LLC | 311 | $6.75K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 300 | $6.51K | 0.00% | +136+82.9% | Added |
| Delta Asset Management LLC | 250 | $5.43K | 0.00% | 00.0% | Unchanged |
| IFC & Insurance Marketing, Inc. | 238 | $5.00K | 0.00% | +238 | New |
| Garton & Associates Financial Advisors LLC | 215 | $4.67K | 0.00% | +215 | New |
| Bare Financial Services, Inc | 190 | $4.13K | 0.00% | +190 | New |
| Allworth Financial LP | 183 | $3.98K | 0.00% | −160−46.6% | Reduced |
| Russell Investments Group, Ltd. | 182 | $3.96K | 0.00% | +86+89.6% | Added |
| Harbour Investments, Inc. | 178 | $3.87K | 0.00% | 00.0% | Unchanged |
| Umb Bank N A | 158 | $3.43K | 0.00% | +158 | New |
| Brown Brothers Harriman & Co | 100 | $2.17K | 0.00% | 00.0% | Unchanged |
| Glen Eagle Advisors, LLC | 100 | $2.17K | 0.00% | 00.0% | Unchanged |
| Provenance Wealth Advisors, LLC | 100 | $2.17K | 0.00% | 00.0% | Unchanged |
| Triumph Capital Management | 100 | $2.17K | 0.00% | +100 | New |
| FMR LLC | 80 | $1.74K | 0.00% | +46+135.3% | Added |
| Hager Investment Management Services, LLC | 57 | $1.24K | 0.00% | +1+1.8% | Added |
| SJS Investment Consulting Inc. | 44 | $954 | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 37 | $804 | 0.00% | 00.0% | Unchanged |
| Ronald Blue Trust, Inc. | 21 | $456 | 0.00% | +21 | New |
| Assetmark, Inc | 11 | $239 | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 10 | $217 | 0.00% | −2,190−99.5% | Reduced |
| National Bank of Canada | 10 | $217 | 0.00% | +5+100.0% | Added |
| Tower Research Capital LLC (TRC) | 6 | $130 | 0.00% | +6 | New |
| Rhumbline Advisers | 3 | $65 | 0.00% | +3 | New |
| Danske Bank A/S | 1 | $22 | 0.00% | +1 | New |
| Union Bancaire Privee, UBP SA | 15,014 | – | – | −4,305−22.3% | Reduced |
| HRT Financial LP | 0 | $0 | 0.00% | −162,375−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −93,900−100.0% | Sold out |
| Toroso Investments, LLC | 0 | $0 | 0.00% | −57,307−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −39,941−100.0% | Sold out |
| Redhawk Wealth Advisors, Inc. | 0 | $0 | 0.00% | −39,519−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −34,360−100.0% | Sold out |
| Bramshill Investments, LLC | 0 | $0 | 0.00% | −31,875−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −23,806−100.0% | Sold out |
| Capstone Investment Advisors, LLC | 0 | $0 | 0.00% | −19,056−100.0% | Sold out |
| Integrated Wealth Concepts LLC | 0 | $0 | 0.00% | −18,462−100.0% | Sold out |
| Mercer Global Advisors Inc | 0 | $0 | 0.00% | −13,621−100.0% | Sold out |
| Grimes & Company, Inc. | 0 | $0 | 0.00% | −11,924−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −10,952−100.0% | Sold out |
| Advisory Research Inc | 0 | $0 | 0.00% | −10,338−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −10,268−100.0% | Sold out |
| Robertson Stephens Wealth Management, LLC | 0 | $0 | 0.00% | −9,700−100.0% | Sold out |
| Empowered Funds, LLC | 0 | $0 | 0.00% | −9,108−100.0% | Sold out |
| Csenge Advisory Group | 0 | $0 | 0.00% | −9,000−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −4,764−100.0% | Sold out |
| Future Financial Wealth Managment LLC | 0 | $0 | 0.00% | −4,200−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −3,261−100.0% | Sold out |
| Alerus Financial NA | 0 | $0 | 0.00% | −325−100.0% | Sold out |
| Wealthspire Advisors, LLC | 0 | $0 | 0.00% | −121−100.0% | Sold out |
| Burgundy Asset Management Ltd. | – | – | – | – | Not filed |
| Wetherby Asset Management Inc | – | – | – | – | Not filed |
| AllSquare Wealth Management LLC | – | – | – | – | Not filed |
| Guerra Advisors Inc | – | – | – | – | Not filed |