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 |
|---|---|---|---|---|---|
| Federation des caisses Desjardins du Quebec | 4,000 | $91.4K | 0.00% | 00.0% | Unchanged |
| Redmont Wealth Advisors LLC | 3,466 | $79.2K | 0.11% | −141−3.9% | Reduced |
| Advisory Services Network, LLC | 3,261 | $74.5K | 0.00% | +3,261 | New |
| MAI Capital Management | 3,115 | $71.2K | 0.00% | −1,149−26.9% | Reduced |
| Global Retirement Partners, LLC | 3,034 | $69.4K | 0.00% | +209+7.4% | Added |
| Rossby Financial, LCC | 2,916 | $64.6K | 0.02% | −67−2.2% | Reduced |
| Essential Partners LLC | 2,200 | $50.3K | 0.02% | 00.0% | Unchanged |
| CIBC Private Wealth Group, LLC | 2,144 | $49.0K | 0.00% | 00.0% | Unchanged |
| MTM Investment Management, LLC | 2,040 | $46.6K | 0.01% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 2,000 | $45.7K | 0.00% | 00.0% | Unchanged |
| BI Asset Management Fondsmaeglerselskab A/S | 1,919 | $44.0K | 0.00% | 00.0% | Unchanged |
| Trust Co of Vermont | 1,584 | $36.2K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 1,530 | $35.0K | 0.00% | +469+44.2% | Added |
| Geneos Wealth Management Inc. | 1,525 | $34.9K | 0.00% | −221−12.7% | Reduced |
| First Community Trust NA | 1,040 | $23.8K | 0.02% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 1,011 | $23.1K | 0.00% | +407+67.4% | Added |
| Huntington National Bank | 1,001 | $22.9K | 0.00% | 00.0% | Unchanged |
| Community Bank, N.A. | 1,000 | $22.9K | 0.00% | 00.0% | Unchanged |
| Bartlett & Co. Wealth Management LLC | 700 | $16.0K | 0.00% | 00.0% | Unchanged |
| Private Trust Co NA | 600 | $13.7K | 0.00% | 00.0% | Unchanged |
| Westside Investment Management, Inc. | 572 | $12.7K | 0.00% | +286+100.0% | Added |
| Greykasell Wealth Strategies, Inc. | 509 | $11.6K | 0.00% | +12+2.4% | Added |
| AllSquare Wealth Management LLC | 500 | $11.4K | 0.01% | 00.0% | Unchanged |
| Valley National Advisers Inc | 500 | $11.0K | 0.00% | 00.0% | Unchanged |
| Blume Capital Management, Inc. | 450 | $10.3K | 0.00% | 00.0% | Unchanged |
| Atlantic Union Bankshares Corp | 400 | $9.14K | 0.00% | +400 | New |
| Allworth Financial LP | 343 | $7.84K | 0.00% | +9+2.7% | Added |
| Alerus Financial NA | 325 | $7.43K | 0.00% | +325 | New |
| Quadrant Capital Group LLC | 311 | $7.11K | 0.00% | +311 | New |
| Delta Asset Management LLC | 250 | $5.71K | 0.00% | 00.0% | Unchanged |
| WealthCollab, LLC | 225 | $5.14K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 224 | $5.12K | 0.00% | +5+2.3% | Added |
| Harbour Investments, Inc. | 178 | $4.07K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 164 | $3.75K | 0.00% | +3+1.9% | Added |
| Wealthspire Advisors, LLC | 121 | $2.77K | 0.00% | +121 | New |
| 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 |
| Russell Investments Group, Ltd. | 96 | $2.19K | 0.00% | +2+2.1% | Added |
| Hager Investment Management Services, LLC | 56 | $1.28K | 0.00% | +1+1.8% | Added |
| SJS Investment Consulting Inc. | 44 | $999 | 0.00% | +1+2.3% | Added |
| GAMMA Investing LLC | 37 | $846 | 0.00% | 00.0% | Unchanged |
| FMR LLC | 34 | $777 | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 11 | $251 | 0.00% | +11 | New |
| National Bank of Canada | 5 | $114 | 0.00% | +5 | New |
| Guerra Advisors Inc | 0 | $9 | 0.00% | 0 | New |
| Union Bancaire Privee, UBP SA | 19,319 | – | – | 00.0% | Unchanged |
| 1832 Asset Management L.P. | 0 | $0 | 0.00% | −395,347−100.0% | Sold out |
| LGT Capital Partners Ltd. | 0 | $0 | 0.00% | −336,500−100.0% | Sold out |
| Round Rock Advisors, LLC | 0 | $0 | 0.00% | −281,184−100.0% | Sold out |
| Alyeska Investment Group, L.P. | 0 | $0 | 0.00% | −189,491−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −168,058−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −74,279−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −52,974−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −51,926−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −32,266−100.0% | Sold out |
| Bryn Mawr Trust Co | 0 | $0 | 0.00% | −31,070−100.0% | Sold out |
| Bouchey Financial Group Ltd | 0 | $0 | 0.00% | −30,252−100.0% | Sold out |
| DRW Securities, LLC | 0 | $0 | 0.00% | −25,122−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −17,540−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −16,052−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −14,825−100.0% | Sold out |
| Concurrent Investment Advisors, LLC | 0 | $0 | 0.00% | −11,138−100.0% | Sold out |
| Marble Harbor Investment Counsel, LLC | 0 | $0 | 0.00% | −10,210−100.0% | Sold out |
| Whittier Trust Co of Nevada Inc | 0 | $0 | 0.00% | −9,575−100.0% | Sold out |
| Stableford Capital II LLC | 0 | $0 | 0.00% | −8,500−100.0% | Sold out |
| LexAurum Advisors, LLC | 0 | $0 | 0.00% | −8,454−100.0% | Sold out |
| Security National Bank | 0 | $0 | 0.00% | −3,361−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −1,770−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −1,297−100.0% | Sold out |
| Beacon Capital Management, LLC | 0 | $0 | 0.00% | −1,204−100.0% | Sold out |
| Thurston, Springer, Miller, Herd & Titak, Inc. | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Mid-American Wealth Advisory Group, Inc. | 0 | $0 | 0.00% | −189−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −83−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Wambolt & Associates, LLC | – | – | – | – | Not filed |
| Northeast Financial Consultants Inc | – | – | – | – | Not filed |
| Atria Wealth Solutions, Inc. | – | – | – | – | Not filed |
| Atlas Capital Advisors LLC | – | – | – | – | Not filed |
| First Horizon Advisors, Inc. | – | – | – | – | Not filed |