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 |
|---|---|---|---|---|---|
| Sanctuary Advisors, LLC | 18,672 | $405.6K | 0.00% | +114+0.6% | Added |
| Klein Pavlis & Peasley Financial, Inc. | 18,729 | $406.8K | 0.24% | −416−2.2% | Reduced |
| ProShare Advisors LLC | 19,311 | $419.4K | 0.00% | −1,109−5.4% | Reduced |
| London & Capital Asset Management Ltd | 19,400 | $421.5K | 0.00% | 00.0% | Unchanged |
| Whalerock Point Partners, LLC | 19,738 | $428.7K | 0.08% | −1,991−9.2% | Reduced |
| Generali Investments CEE, investicni spolecnost, a.s. | 21,235 | $461.2K | 0.03% | 00.0% | Unchanged |
| Kovack Advisors, Inc. | 21,273 | $462.0K | 0.02% | +21,273 | New |
| Mirador Capital Partners LP | 21,281 | $462.2K | 0.06% | +178+0.8% | Added |
| IFG Advisory, LLC | 21,374 | $464.2K | 0.02% | +215+1.0% | Added |
| Quantbot Technologies LP | 21,654 | $470.3K | 0.02% | +21,654 | New |
| Catalytic Wealth RIA, LLC | 21,870 | $475.0K | 0.02% | +7,870+56.2% | Added |
| XTX Topco Ltd | 21,889 | $475.4K | 0.01% | +21,889 | New |
| Price T Rowe Associates Inc | 21,905 | $476.0K | 0.00% | +968+4.6% | Added |
| Private Advisor Group, LLC | 21,947 | $476.7K | 0.00% | +929+4.4% | Added |
| Silver Oak Securities, Inc | 21,867 | $477.6K | 0.03% | −821−3.6% | Reduced |
| Magnus Financial Group LLC | 22,892 | $497.2K | 0.04% | −883−3.7% | Reduced |
| Parallel Advisors, LLC | 23,335 | $506.8K | 0.01% | +5,294+29.3% | Added |
| Chicago Partners Investment Group LLC | 23,012 | $510.9K | 0.01% | −357−1.5% | Reduced |
| Sage Investment Counsel LLC | 24,777 | $538.2K | 0.59% | 00.0% | Unchanged |
| Buckingham Strategic Partners | 24,867 | $540.1K | 0.01% | −19,796−44.3% | Reduced |
| Family Wealth Partners, LLC | 24,867 | $540.1K | 0.19% | +602+2.5% | Added |
| Merrion Investment Management Co, LLC | 25,000 | $543.0K | 0.29% | 00.0% | Unchanged |
| Virtus Investment Advisers, Inc. | 25,028 | $543.6K | 0.15% | −1,962−7.3% | Reduced |
| US Bancorp | 25,113 | $545.5K | 0.00% | −27−0.1% | Reduced |
| Natixis | 25,249 | $548.4K | 0.00% | 00.0% | Unchanged |
| Eagle Global Advisors LLC | 25,835 | $561.1K | 0.02% | +7,540+41.2% | Added |
| Triad Investment Management | 26,602 | $577.8K | 0.59% | +26,602 | New |
| Ethos Financial Group, LLC | 27,774 | $603.3K | 0.04% | −1,370−4.7% | Reduced |
| Sargent Investment Group, LLC | 28,400 | $616.8K | 0.08% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 28,593 | $621.0K | 0.00% | +1,736+6.5% | Added |
| Barnett & Company, Inc. | 29,250 | $635.3K | 0.51% | −9,500−24.5% | Reduced |
| Romano Brothers and Company | 29,700 | $645.1K | 0.07% | 00.0% | Unchanged |
| COFG Advisors, LLC | 29,761 | $646.4K | 0.16% | +29,761 | New |
| AE Wealth Management LLC | 30,021 | $652.1K | 0.00% | +20,562+217.4% | Added |
| TrueMark Investments, LLC | 30,312 | $658.4K | 0.13% | +30,312 | New |
| Kestra Advisory Services, LLC | 30,870 | $670.5K | 0.00% | −3,144−9.2% | Reduced |
| Delphi Financial Group, Inc. | 32,041 | $695.9K | 0.35% | +12,000+59.9% | Added |
| Mariner, LLC | 32,142 | $698.1K | 0.00% | −7,645−19.2% | Reduced |
| Caxton Associates LLP | 33,356 | $724.5K | 0.01% | +21,626+184.4% | Added |
| Invesco Ltd. | 33,463 | $726.8K | 0.00% | −695−2.0% | Reduced |
| Ellsworth Advisors, LLC | 33,190 | $743.4K | 0.15% | +2,252+7.3% | Added |
| Millennium Management LLC | 34,236 | $743.6K | 0.00% | +34,236 | New |
| Hennion & Walsh Asset Management, Inc. | 34,249 | $743.9K | 0.03% | −1,032−2.9% | Reduced |
| Closed-End Fund Advisors, Inc. | 34,249 | $743.9K | 0.44% | +34,249 | New |
| Platform Technology Partners | 34,444 | $748.1K | 0.16% | +6,499+23.3% | Added |
| Nations Financial Group Inc, | 35,747 | $776.4K | 0.04% | +436+1.2% | Added |
| Texas Yale Capital Corp. | 36,876 | $800.9K | 0.02% | +1,376+3.9% | Added |
| Ehrenkranz Partners L.P. | 37,474 | $813.9K | 0.92% | 00.0% | Unchanged |
| Dakota Wealth Management | 38,860 | $844.0K | 0.01% | −780−2.0% | Reduced |
| Captrust Financial Advisors | 38,947 | $845.9K | 0.00% | −10,717−21.6% | Reduced |
| Creative Planning | 39,337 | $854.4K | 0.00% | −26,646−40.4% | Reduced |
| Diversify Advisory Services, LLC | 38,454 | $857.5K | 0.03% | +2,269+6.3% | Added |
| Essex Financial Services, Inc. | 39,522 | $858.4K | 0.05% | −440−1.1% | Reduced |
| Evoke Wealth, LLC | 39,859 | $865.7K | 0.02% | +10.0% | Added |
| Foundations Investment Advisors, LLC | 40,126 | $871.5K | 0.01% | −1,720−4.1% | Reduced |
| Park Circle Co | 40,145 | $871.9K | 0.79% | 00.0% | Unchanged |
| Pallas Capital Advisors LLC | 43,255 | $939.5K | 0.03% | −1,361−3.1% | Reduced |
| Savvy Advisors, Inc. | 43,389 | $942.4K | 0.03% | +2,999+7.4% | Added |
| Tred Avon Family Wealth, LLC | 44,026 | $956.2K | 0.31% | −965−2.1% | Reduced |
| Lido Advisors, LLC | 42,172 | $958.2K | 0.00% | +506+1.2% | Added |
| Canton Hathaway, LLC | 46,535 | $1.01M | 0.19% | 00.0% | Unchanged |
| Cornerstone Wealth Management, LLC | 47,093 | $1.02M | 0.05% | +970+2.1% | Added |
| HighTower Advisors, LLC | 47,422 | $1.03M | 0.00% | −6,757−12.5% | Reduced |
| Brown Advisory Inc | 48,713 | $1.06M | 0.00% | +9,714+24.9% | Added |
| Advisor Group Holdings, Inc. | 54,374 | $1.18M | 0.00% | +12,642+30.3% | Added |
| Lifetime Wealth Management P.C. | 54,887 | $1.19M | 0.75% | +54,887 | New |
| Dearborn Partners LLC | 56,429 | $1.23M | 0.06% | −2,699−4.6% | Reduced |
| FJ Capital Management LLC | 58,423 | $1.27M | 0.14% | −33,404−36.4% | Reduced |
| Independent Financial Group, LLC | 59,311 | $1.29M | 0.03% | +1,954+3.4% | Added |
| CAPROCK Group, Inc. | 60,565 | $1.32M | 0.03% | +242+0.4% | Added |
| Quantinno Capital Management LP | 62,144 | $1.35M | 0.00% | +2,810+4.7% | Added |
| Beacon Pointe Advisors, LLC | 62,519 | $1.36M | 0.01% | +12,000+23.8% | Added |
| Aquatic Capital Management LLC | 64,488 | $1.40M | 0.04% | +31,664+96.5% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 65,493 | $1.42M | 0.01% | +65,493 | New |
| IFP Advisors, Inc | 67,727 | $1.47M | 0.03% | +13,513+24.9% | Added |
| Grantham, Mayo, Van Otterloo & Co. LLC | 67,847 | $1.47M | 0.00% | +1,357+2.0% | Added |
| Legacy Capital Wealth Partners, LLC | 68,082 | $1.48M | 0.32% | +6,823+11.1% | Added |
| Barclays PLC | 72,066 | $1.57M | 0.00% | −16,851−19.0% | Reduced |
| Plan Group Financial, LLC | 73,257 | $1.59M | 0.41% | +9,635+15.1% | Added |
| Northern Trust Corp | 75,085 | $1.63M | 0.00% | −3,584−4.6% | Reduced |
| HB Wealth Management, LLC | 75,751 | $1.65M | 0.01% | −1,625−2.1% | Reduced |
| CI Private Wealth, LLC | 78,237 | $1.70M | 0.00% | +10,765+16.0% | Added |
| Wiley Bros.-Aintree Capital, LLC | 86,965 | $1.89M | 0.01% | +67,360+343.6% | Added |
| Riverbridge Partners LLC | 89,938 | $1.95M | 0.04% | +39,919+79.8% | Added |
| BNP Paribas Arbitrage, SA | 91,959 | $2.00M | 0.00% | +1,225+1.4% | Added |
| CWM, LLC | 92,325 | $2.00M | 0.01% | −43,177−31.9% | Reduced |
| Ignite Planners, LLC | 102,317 | $2.25M | 0.34% | +32,850+47.3% | Added |
| Atom Investors LP | 107,014 | $2.32M | 0.18% | −80,590−43.0% | Reduced |
| IHT Wealth Management, LLC | 110,074 | $2.39M | 0.06% | +2,265+2.1% | Added |
| State Street Corp | 114,263 | $2.48M | 0.00% | +22,055+23.9% | Added |
| Standard Life Aberdeen plc | 123,237 | $2.68M | 0.00% | 00.0% | Unchanged |
| Wealthstar Advisors, LLC | 129,509 | $2.81M | 1.53% | +140.0% | Added |
| Argent Trust Co | 135,826 | $2.95M | 0.10% | +2,108+1.6% | Added |
| Denali Advisors LLC | 140,144 | $3.04M | 0.34% | −18,989−11.9% | Reduced |
| Waterloo Capital, L.P. | 140,396 | $3.05M | 0.22% | +31,992+29.5% | Added |
| Naviter Wealth, LLC | 141,461 | $3.07M | 0.40% | −8,303−5.5% | Reduced |
| National Philanthropic Trust | 146,000 | $3.17M | 0.03% | +46,000+46.0% | Added |
| Rockefeller Capital Management L.P. | 148,369 | $3.22M | 0.01% | −57,565−28.0% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 150,549 | $3.27M | 0.01% | 00.0% | Unchanged |
| Texas Capital Bank Wealth Management Services Inc | 153,014 | $3.32M | 0.19% | −982−0.6% | Reduced |