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 |
|---|---|---|---|---|---|
| Sixth Street Partners Management Company, L.P. | 2,714,226 | $59.0M | 6.06% | 00.0% | Unchanged |
| Sound Income Strategies, LLC | 2,511,115 | $56.0M | 2.65% | +108,708+4.5% | Added |
| Progeny 3, Inc. | 2,476,398 | $53.8M | 2.90% | 00.0% | Unchanged |
| Morgan Stanley | 2,390,628 | $51.9M | 0.00% | +386,591+19.3% | Added |
| Van Eck Associates Corp | 2,342,047 | $50.9M | 0.04% | −187,140−7.4% | Reduced |
| Bank of Montreal | 2,284,920 | $49.6M | 0.02% | +1,845,088+419.5% | Added |
| STRS Ohio | 2,154,159 | $46.8M | 0.17% | +49,986+2.4% | Added |
| UBS Group AG | 1,616,161 | $35.1M | 0.01% | +299,564+22.8% | Added |
| Allen Investment Management LLC | 1,560,247 | $33.9M | 0.38% | +1,580+0.1% | Added |
| Ares Management LLC | 1,354,779 | $29.4M | 1.68% | −40,000−2.9% | Reduced |
| Wells Fargo & Company | 1,270,816 | $27.6M | 0.01% | +45,870+3.7% | Added |
| Callodine Capital Management, LP | 1,101,992 | $23.9M | 1.92% | +230,559+26.5% | Added |
| Muzinich & Co., Inc. | 992,898 | $21.6M | 6.78% | +245,940+32.9% | Added |
| JPMorgan Chase & Co | 934,233 | $20.3M | 0.00% | −59,502−6.0% | Reduced |
| Raymond James Financial Inc | 896,117 | $19.5M | 0.01% | +23,978+2.7% | Added |
| BlackRock, Inc. | 808,428 | $17.6M | 0.00% | −3,002−0.4% | Reduced |
| LSV Asset Management | 791,212 | $17.2M | 0.04% | −181,500−18.7% | Reduced |
| Advisors Capital Management, LLC | 767,489 | $16.7M | 0.20% | +20,763+2.8% | Added |
| Bank of America Corp | 752,631 | $16.3M | 0.00% | +60,344+8.7% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 741,125 | $16.1M | 0.01% | +78,229+11.8% | Added |
| LPL Financial LLC | 693,805 | $15.1M | 0.00% | +31,892+4.8% | Added |
| Legal & General Group Plc | 665,352 | $14.5M | 0.00% | +91,578+16.0% | Added |
| SCS Capital Management LLC | 649,887 | $14.1M | 0.15% | +13,549+2.1% | Added |
| Envestnet Asset Management Inc | 633,157 | $13.8M | 0.00% | +44,190+7.5% | Added |
| Stifel Financial Corp | 626,976 | $13.6M | 0.01% | +14,449+2.4% | Added |
| Goldman Sachs Group Inc | 624,196 | $13.6M | 0.00% | +319,665+105.0% | Added |
| Tectonic Advisors LLC | 617,476 | $13.4M | 0.71% | +58,538+10.5% | Added |
| Melia Wealth LLC | 617,204 | $13.4M | 6.20% | −5,694−0.9% | Reduced |
| Cetera Investment Advisers | 593,881 | $12.9M | 0.01% | +35,935+6.4% | Added |
| Franklin Resources Inc | 571,158 | $12.4M | 0.00% | +24,811+4.5% | Added |
| Columbus Macro, LLC | 547,164 | $11.9M | 1.30% | +50,354+10.1% | Added |
| Neuberger Berman Group LLC | 526,234 | $11.4M | 0.01% | +63,808+13.8% | Added |
| Gilman Hill Asset Management, LLC | 474,356 | $10.3M | 1.62% | +350.0% | Added |
| Omers Administration Corp | 469,109 | $10.2M | 0.07% | +286,724+157.2% | Added |
| Cresset Asset Management, LLC | 404,639 | $8.79M | 0.04% | +101,001+33.3% | Added |
| Two Sigma Advisers, LP | 393,298 | $8.54M | 0.02% | −262,991−40.1% | Reduced |
| Cerity Partners LLC | 384,767 | $8.36M | 0.01% | −25,201−6.1% | Reduced |
| Two Sigma Investments, LP | 370,223 | $8.04M | 0.01% | −176,845−32.3% | Reduced |
| We Are One Seven, LLC | 366,017 | $7.95M | 0.16% | −32,261−8.1% | Reduced |
| Altshuler Shaham Ltd | 301,460 | $6.55M | 0.10% | +301,460 | New |
| Qube Research & Technologies Ltd | 269,578 | $5.86M | 0.01% | +197,508+274.1% | Added |
| First National Trust Co | 247,436 | $5.37M | 0.18% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 230,749 | $5.01M | 0.00% | +163+0.1% | Added |
| Confluence Investment Management LLC | 225,778 | $4.90M | 0.07% | −8,130−3.5% | Reduced |
| Janney Montgomery Scott LLC | 224,913 | $4.88M | 0.01% | −26,139−10.4% | Reduced |
| Ameriprise Financial Inc | 221,438 | $4.81M | 0.00% | −37,860−14.6% | Reduced |
| Advisors Asset Management, Inc. | 216,004 | $4.69M | 0.08% | −12,750−5.6% | Reduced |
| Benjamin Edwards Inc | 215,726 | $4.69M | 0.05% | +1,037+0.5% | Added |
| RMR Capital Management, LLC | 197,718 | $4.29M | 3.10% | −16,531−7.7% | Reduced |
| D.A. Davidson & Co. | 191,676 | $4.16M | 0.03% | +9,085+5.0% | Added |
| Stratos Wealth Advisors, LLC | 190,094 | $4.13M | 0.20% | +190,094 | New |
| Parkwood LLC | 184,819 | $4.01M | 0.34% | 00.0% | Unchanged |
| Clayton Partners LLC | 178,121 | $3.87M | 2.79% | +40,999+29.9% | Added |
| Great West Life Assurance Co | 164,256 | $3.57M | 0.01% | +5,543+3.5% | Added |
| Truvestments Capital LLC | 164,193 | $3.57M | 0.65% | −5,199−3.1% | Reduced |
| Commonwealth Equity Services, LLC | 156,787 | $3.41M | 0.00% | +27,192+21.0% | Added |
| Royal Bank of Canada | 155,887 | $3.39M | 0.00% | −130,564−45.6% | Reduced |
| Texas Capital Bank Wealth Management Services Inc | 153,014 | $3.32M | 0.19% | −982−0.6% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 150,549 | $3.27M | 0.01% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 148,369 | $3.22M | 0.01% | −57,565−28.0% | Reduced |
| National Philanthropic Trust | 146,000 | $3.17M | 0.03% | +46,000+46.0% | Added |
| Naviter Wealth, LLC | 141,461 | $3.07M | 0.40% | −8,303−5.5% | Reduced |
| Waterloo Capital, L.P. | 140,396 | $3.05M | 0.22% | +31,992+29.5% | Added |
| Denali Advisors LLC | 140,144 | $3.04M | 0.34% | −18,989−11.9% | Reduced |
| Argent Trust Co | 135,826 | $2.95M | 0.10% | +2,108+1.6% | Added |
| Wealthstar Advisors, LLC | 129,509 | $2.81M | 1.53% | +140.0% | Added |
| Standard Life Aberdeen plc | 123,237 | $2.68M | 0.00% | 00.0% | Unchanged |
| State Street Corp | 114,263 | $2.48M | 0.00% | +22,055+23.9% | Added |
| IHT Wealth Management, LLC | 110,074 | $2.39M | 0.06% | +2,265+2.1% | Added |
| Atom Investors LP | 107,014 | $2.32M | 0.18% | −80,590−43.0% | Reduced |
| Ignite Planners, LLC | 102,317 | $2.25M | 0.34% | +32,850+47.3% | Added |
| CWM, LLC | 92,325 | $2.00M | 0.01% | −43,177−31.9% | Reduced |
| BNP Paribas Arbitrage, SA | 91,959 | $2.00M | 0.00% | +1,225+1.4% | Added |
| Riverbridge Partners LLC | 89,938 | $1.95M | 0.04% | +39,919+79.8% | Added |
| Wiley Bros.-Aintree Capital, LLC | 86,965 | $1.89M | 0.01% | +67,360+343.6% | Added |
| CI Private Wealth, LLC | 78,237 | $1.70M | 0.00% | +10,765+16.0% | Added |
| HB Wealth Management, LLC | 75,751 | $1.65M | 0.01% | −1,625−2.1% | Reduced |
| Northern Trust Corp | 75,085 | $1.63M | 0.00% | −3,584−4.6% | Reduced |
| Plan Group Financial, LLC | 73,257 | $1.59M | 0.41% | +9,635+15.1% | Added |
| Barclays PLC | 72,066 | $1.57M | 0.00% | −16,851−19.0% | Reduced |
| Legacy Capital Wealth Partners, LLC | 68,082 | $1.48M | 0.32% | +6,823+11.1% | Added |
| Grantham, Mayo, Van Otterloo & Co. LLC | 67,847 | $1.47M | 0.00% | +1,357+2.0% | Added |
| IFP Advisors, Inc | 67,727 | $1.47M | 0.03% | +13,513+24.9% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 65,493 | $1.42M | 0.01% | +65,493 | New |
| Aquatic Capital Management LLC | 64,488 | $1.40M | 0.04% | +31,664+96.5% | Added |
| Beacon Pointe Advisors, LLC | 62,519 | $1.36M | 0.01% | +12,000+23.8% | Added |
| Quantinno Capital Management LP | 62,144 | $1.35M | 0.00% | +2,810+4.7% | Added |
| CAPROCK Group, Inc. | 60,565 | $1.32M | 0.03% | +242+0.4% | Added |
| Independent Financial Group, LLC | 59,311 | $1.29M | 0.03% | +1,954+3.4% | Added |
| FJ Capital Management LLC | 58,423 | $1.27M | 0.14% | −33,404−36.4% | Reduced |
| Dearborn Partners LLC | 56,429 | $1.23M | 0.06% | −2,699−4.6% | Reduced |
| Lifetime Wealth Management P.C. | 54,887 | $1.19M | 0.75% | +54,887 | New |
| Advisor Group Holdings, Inc. | 54,374 | $1.18M | 0.00% | +12,642+30.3% | Added |
| Brown Advisory Inc | 48,713 | $1.06M | 0.00% | +9,714+24.9% | Added |
| HighTower Advisors, LLC | 47,422 | $1.03M | 0.00% | −6,757−12.5% | Reduced |
| Cornerstone Wealth Management, LLC | 47,093 | $1.02M | 0.05% | +970+2.1% | Added |
| Canton Hathaway, LLC | 46,535 | $1.01M | 0.19% | 00.0% | Unchanged |
| Lido Advisors, LLC | 42,172 | $958.2K | 0.00% | +506+1.2% | Added |
| Tred Avon Family Wealth, LLC | 44,026 | $956.2K | 0.31% | −965−2.1% | Reduced |
| Savvy Advisors, Inc. | 43,389 | $942.4K | 0.03% | +2,999+7.4% | Added |