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 |
|---|---|---|---|---|---|
| Danske Bank A/S | 1 | $22 | 0.00% | +1 | New |
| Rhumbline Advisers | 3 | $65 | 0.00% | +3 | New |
| Tower Research Capital LLC (TRC) | 6 | $130 | 0.00% | +6 | New |
| Essential Partners LLC | 10 | $217 | 0.00% | −2,190−99.5% | Reduced |
| National Bank of Canada | 10 | $217 | 0.00% | +5+100.0% | Added |
| Assetmark, Inc | 11 | $239 | 0.00% | 00.0% | Unchanged |
| Ronald Blue Trust, Inc. | 21 | $456 | 0.00% | +21 | New |
| GAMMA Investing LLC | 37 | $804 | 0.00% | 00.0% | Unchanged |
| SJS Investment Consulting Inc. | 44 | $954 | 0.00% | 00.0% | Unchanged |
| Hager Investment Management Services, LLC | 57 | $1.24K | 0.00% | +1+1.8% | Added |
| FMR LLC | 80 | $1.74K | 0.00% | +46+135.3% | Added |
| 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 |
| Umb Bank N A | 158 | $3.43K | 0.00% | +158 | New |
| Harbour Investments, Inc. | 178 | $3.87K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 182 | $3.96K | 0.00% | +86+89.6% | Added |
| Allworth Financial LP | 183 | $3.98K | 0.00% | −160−46.6% | Reduced |
| Bare Financial Services, Inc | 190 | $4.13K | 0.00% | +190 | New |
| Garton & Associates Financial Advisors LLC | 215 | $4.67K | 0.00% | +215 | New |
| IFC & Insurance Marketing, Inc. | 238 | $5.00K | 0.00% | +238 | New |
| Delta Asset Management LLC | 250 | $5.43K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 300 | $6.51K | 0.00% | +136+82.9% | Added |
| Quadrant Capital Group LLC | 311 | $6.75K | 0.00% | 00.0% | Unchanged |
| WealthCollab, LLC | 340 | $7.38K | 0.00% | +115+51.1% | Added |
| Rossby Financial, LCC | 397 | $8.62K | 0.00% | −2,519−86.4% | Reduced |
| Atlantic Union Bankshares Corp | 400 | $8.69K | 0.00% | 00.0% | Unchanged |
| Flagship Harbor Advisors, LLC | 419 | $9.11K | 0.00% | +419 | New |
| Blume Capital Management, Inc. | 450 | $9.77K | 0.00% | 00.0% | Unchanged |
| Valley National Advisers Inc | 500 | $10.0K | 0.00% | 00.0% | Unchanged |
| Greykasell Wealth Strategies, Inc. | 520 | $11.3K | 0.00% | +11+2.2% | Added |
| Westside Investment Management, Inc. | 572 | $12.4K | 0.00% | 00.0% | Unchanged |
| Private Trust Co NA | 600 | $13.0K | 0.00% | 00.0% | Unchanged |
| International Assets Investment Management, LLC | 644 | $14.0K | 0.00% | +644 | New |
| Bartlett & Co. Wealth Management LLC | 700 | $15.2K | 0.00% | 00.0% | Unchanged |
| Community Bank, N.A. | 1,000 | $21.7K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 1,001 | $21.7K | 0.00% | 00.0% | Unchanged |
| First Community Trust NA | 1,040 | $22.6K | 0.02% | 00.0% | Unchanged |
| Geneos Wealth Management Inc. | 1,525 | $33.1K | 0.00% | 00.0% | Unchanged |
| Trust Co of Vermont | 1,584 | $34.4K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 1,732 | $37.6K | 0.00% | +1,508+673.2% | Added |
| EverSource Wealth Advisors, LLC | 1,893 | $41.1K | 0.00% | +363+23.7% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 1,959 | $43.0K | 0.00% | +40+2.1% | Added |
| Jones Financial Companies LLLP | 2,011 | $43.7K | 0.00% | +1,000+98.9% | Added |
| MTM Investment Management, LLC | 2,040 | $44.3K | 0.01% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 2,044 | $44.4K | 0.00% | −990−32.6% | Reduced |
| CIBC Private Wealth Group, LLC | 2,144 | $46.6K | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 2,200 | $47.8K | 0.00% | +200+10.0% | Added |
| Nomura Asset Management Co Ltd | 2,239 | $48.6K | 0.00% | −8,550−79.2% | Reduced |
| MAI Capital Management | 3,133 | $68.1K | 0.00% | +18+0.6% | Added |
| Farther Finance Advisors, LLC | 3,425 | $74.4K | 0.00% | −1,275−27.1% | Reduced |
| 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 |
| State of Alaska, Department of Revenue | 4,529 | $98.0K | 0.00% | +240+5.6% | Added |
| Redmont Wealth Advisors LLC | 4,776 | $103.7K | 0.16% | +1,310+37.8% | Added |
| Frazier Financial Advisors, LLC | 4,814 | $104.6K | 0.06% | 00.0% | Unchanged |
| Signaturefd, LLC | 4,898 | $106.4K | 0.00% | +334+7.3% | Added |
| SG Americas Securities, LLC | 4,986 | $108.0K | 0.00% | +4,986 | New |
| SRS Capital Advisors, Inc. | 5,000 | $108.6K | 0.00% | +5,000 | New |
| Atlas Capital Advisors LLC | 5,115 | $111.1K | 0.01% | +5,115 | New |
| EMC Capital Management | 5,202 | $113.0K | 0.05% | −918−15.0% | Reduced |
| Annis Gardner Whiting Capital Advisors, LLC | 5,235 | $113.7K | 0.02% | 00.0% | Unchanged |
| Vaughan Nelson Investment Management, L.P. | 5,350 | $116.2K | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 5,446 | $118.3K | 0.00% | +5,446 | New |
| Key Capital Management, INC | 6,316 | $137.2K | 0.14% | +6,316 | New |
| Comerica Bank | 6,834 | $148.4K | 0.00% | +1,738+34.1% | Added |
| The PNC Financial Services Group, Inc. | 7,341 | $159.4K | 0.00% | 00.0% | Unchanged |
| Register Financial Advisors LLC | 9,102 | $197.7K | 0.08% | +19+0.2% | Added |
| Maia Wealth LLC | 10,211 | $205.4K | 0.04% | +211+2.1% | Added |
| Glenview Trust Co | 9,700 | $210.7K | 0.00% | 00.0% | Unchanged |
| Whipplewood Advisors, LLC | 9,816 | $213.2K | 0.14% | +9,816 | New |
| Baird Financial Group, Inc. | 9,885 | $214.7K | 0.00% | +9,885 | New |
| Mirae Asset Global Investments Co., Ltd. | 10,000 | $217.2K | 0.00% | −4,759−32.2% | Reduced |
| Stratos Wealth Partners, LTD. | 10,047 | $218.2K | 0.00% | +532+5.6% | Added |
| Principle Wealth Partners LLC | 10,271 | $223.1K | 0.01% | −1,430−12.2% | Reduced |
| Miller Global Investments, LLC | 10,367 | $225.2K | 0.20% | +10,367 | New |
| GWM Advisors LLC | 11,444 | $248.6K | 0.00% | −1,049−8.4% | Reduced |
| Laird Norton Trust Company, LLC | 11,514 | $250.1K | 0.01% | +11,514 | New |
| Core Wealth Partners LLC | 11,668 | $253.4K | 0.11% | 00.0% | Unchanged |
| Oppenheimer & Co Inc | 11,923 | $259.0K | 0.00% | +626+5.5% | Added |
| Worth Asset Management, LLC | 12,560 | $272.8K | 0.12% | −96−0.8% | Reduced |
| Aigen Investment Management, LP | 12,586 | $273.4K | 0.06% | +12,586 | New |
| Pasadena Private Wealth, LLC | 12,789 | $277.8K | 0.04% | +3,789+42.1% | Added |
| Westmount Partners, LLC | 13,030 | $283.0K | 0.07% | 00.0% | Unchanged |
| Jane Street Group, LLC | 13,796 | $299.6K | 0.00% | +13,796 | New |
| Principal Street Partners, LLC | 13,945 | $302.9K | 0.05% | −625−4.3% | Reduced |
| Steward Partners Investment Advisory, LLC | 14,325 | $311.1K | 0.00% | +3,464+31.9% | Added |
| Squarepoint Ops LLC | 15,047 | $326.8K | 0.00% | +15,047 | New |
| Prelude Capital Management, LLC | 15,261 | $331.5K | 0.02% | −41,411−73.1% | Reduced |
| Angeles Wealth Management, LLC | 15,000 | $332.7K | 0.02% | +15,000 | New |
| Inspirion Wealth Advisors, LLC | 15,426 | $335.1K | 0.04% | 00.0% | Unchanged |
| Mallini Complete Financial Planning LLC | 15,464 | $335.9K | 0.27% | +123+0.8% | Added |
| Heritage Trust Co | 15,889 | $345.1K | 0.04% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 16,038 | $348.3K | 0.00% | +16,038 | New |
| Evergreen Capital Management LLC | 16,470 | $357.7K | 0.01% | −43−0.3% | Reduced |
| Investor's Fiduciary Advisor Network, LLC | 17,308 | $375.0K | 0.08% | −5,482−24.1% | Reduced |
| Bank of New York Mellon Corp | 17,475 | $379.6K | 0.00% | +1,866+12.0% | Added |
| Clearstead Advisors, LLC | 18,000 | $391.0K | 0.00% | 00.0% | Unchanged |
| Monument Capital Management | 18,582 | $403.6K | 0.10% | 00.0% | Unchanged |