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 |
|---|---|---|---|---|---|
| ProShare Advisors LLC | 20,420 | $466.8K | 0.00% | +1,261+6.6% | Added |
| Price T Rowe Associates Inc | 20,937 | $479.0K | 0.00% | +20,937 | New |
| Private Advisor Group, LLC | 21,018 | $480.5K | 0.00% | −850−3.9% | Reduced |
| Mirador Capital Partners LP | 21,103 | $482.4K | 0.07% | −817−3.7% | Reduced |
| IFG Advisory, LLC | 21,159 | $483.7K | 0.02% | +551+2.7% | Added |
| Generali Investments CEE, investicni spolecnost, a.s. | 21,235 | $485.4K | 0.04% | −2,849−11.8% | Reduced |
| Whalerock Point Partners, LLC | 21,729 | $496.7K | 0.10% | +8,529+64.6% | Added |
| Silver Oak Securities, Inc | 22,688 | $518.6K | 0.04% | +2,733+13.7% | Added |
| Investor's Fiduciary Advisor Network, LLC | 22,790 | $520.0K | 0.18% | +22,790 | New |
| Chicago Partners Investment Group LLC | 23,369 | $534.2K | 0.01% | +505+2.2% | Added |
| Magnus Financial Group LLC | 23,775 | $543.5K | 0.04% | +11,249+89.8% | Added |
| Quadrature Capital Ltd | 23,806 | $544.2K | 0.01% | +23,806 | New |
| Family Wealth Partners, LLC | 24,265 | $554.7K | 0.21% | +7,968+48.9% | Added |
| Sage Investment Counsel LLC | 24,777 | $566.4K | 0.63% | −1,500−5.7% | Reduced |
| Merrion Investment Management Co, LLC | 25,000 | $571.5K | 0.33% | 00.0% | Unchanged |
| US Bancorp | 25,140 | $574.7K | 0.00% | +27+0.1% | Added |
| Natixis | 25,249 | $577.2K | 0.00% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 26,857 | $614.0K | 0.00% | −114−0.4% | Reduced |
| Virtus Investment Advisers, Inc. | 26,990 | $617.0K | 0.18% | −2,312−7.9% | Reduced |
| Platform Technology Partners | 27,945 | $638.8K | 0.15% | 00.0% | Unchanged |
| Sargent Investment Group, LLC | 28,400 | $649.2K | 0.09% | 00.0% | Unchanged |
| Romano Brothers and Company | 29,700 | $655.4K | 0.07% | +4,500+17.9% | Added |
| Ethos Financial Group, LLC | 29,144 | $666.2K | 0.05% | −667−2.2% | Reduced |
| Ellsworth Advisors, LLC | 30,938 | $676.9K | 0.14% | +1,123+3.8% | Added |
| Bramshill Investments, LLC | 31,875 | $728.7K | 0.05% | −777−2.4% | Reduced |
| Aquatic Capital Management LLC | 32,824 | $750.4K | 0.01% | +32,824 | New |
| Kestra Advisory Services, LLC | 34,014 | $777.6K | 0.00% | −5,010−12.8% | Reduced |
| Invesco Ltd. | 34,158 | $780.9K | 0.00% | +3,530+11.5% | Added |
| Susquehanna International Group, LLP | 34,360 | $785.5K | 0.00% | +19,634+133.3% | Added |
| Hennion & Walsh Asset Management, Inc. | 35,281 | $806.5K | 0.03% | −28,630−44.8% | Reduced |
| Nations Financial Group Inc, | 35,311 | $807.2K | 0.05% | −197−0.6% | Reduced |
| Texas Yale Capital Corp. | 35,500 | $811.5K | 0.03% | 00.0% | Unchanged |
| Diversify Advisory Services, LLC | 36,185 | $819.2K | 0.03% | +3,666+11.3% | Added |
| Ehrenkranz Partners L.P. | 37,474 | $856.7K | 0.75% | +37,474 | New |
| Barnett & Company, Inc. | 38,750 | $885.8K | 0.68% | +2,000+5.4% | Added |
| Brown Advisory Inc | 38,999 | $891.5K | 0.00% | 00.0% | Unchanged |
| Redhawk Wealth Advisors, Inc. | 39,519 | $903.4K | 0.10% | +39,519 | New |
| Dakota Wealth Management | 39,640 | $906.2K | 0.02% | +420+1.1% | Added |
| Mariner, LLC | 39,787 | $909.5K | 0.00% | +1,158+3.0% | Added |
| Evoke Wealth, LLC | 39,858 | $911.2K | 0.02% | −10.0% | Reduced |
| Marshall Wace, LLP | 39,941 | $913.1K | 0.00% | −35,870−47.3% | Reduced |
| Essex Financial Services, Inc. | 39,962 | $913.5K | 0.05% | −1,085−2.6% | Reduced |
| Park Circle Co | 40,145 | $917.7K | 0.80% | −21,855−35.3% | Reduced |
| Savvy Advisors, Inc. | 40,390 | $923.3K | 0.04% | +5,252+14.9% | Added |
| Buckingham Strategic Partners | 44,663 | $937.5K | 0.01% | +28,367+174.1% | Added |
| Lido Advisors, LLC | 41,666 | $952.5K | 0.00% | −11,330−21.4% | Reduced |
| Foundations Investment Advisors, LLC | 41,846 | $956.6K | 0.01% | −276−0.7% | Reduced |
| Advisor Group Holdings, Inc. | 41,732 | $985.9K | 0.00% | +1,393+3.5% | Added |
| Pallas Capital Advisors LLC | 44,616 | $1.02M | 0.04% | −4,162−8.5% | Reduced |
| Tred Avon Family Wealth, LLC | 44,991 | $1.03M | 0.35% | +44,991 | New |
| Cornerstone Wealth Management, LLC | 46,123 | $1.05M | 0.06% | −543−1.2% | Reduced |
| Canton Hathaway, LLC | 46,535 | $1.06M | 0.20% | −895−1.9% | Reduced |
| Captrust Financial Advisors | 49,664 | $1.14M | 0.00% | +5,239+11.8% | Added |
| Riverbridge Partners LLC | 50,019 | $1.14M | 0.02% | +1,184+2.4% | Added |
| Beacon Pointe Advisors, LLC | 50,519 | $1.15M | 0.01% | +907+1.8% | Added |
| HighTower Advisors, LLC | 54,179 | $1.24M | 0.00% | +6,512+13.7% | Added |
| IFP Advisors, Inc | 54,214 | $1.24M | 0.03% | −16,603−23.4% | Reduced |
| Prelude Capital Management, LLC | 56,672 | $1.30M | 0.10% | −42,171−42.7% | Reduced |
| Toroso Investments, LLC | 57,307 | $1.31M | 0.01% | +4,088+7.7% | Added |
| Independent Financial Group, LLC | 57,357 | $1.31M | 0.03% | −538−0.9% | Reduced |
| Dearborn Partners LLC | 59,128 | $1.35M | 0.06% | −4,448−7.0% | Reduced |
| Quantinno Capital Management LP | 59,334 | $1.36M | 0.00% | +1,299+2.2% | Added |
| Legacy Capital Wealth Partners, LLC | 61,259 | $1.40M | 0.30% | −728−1.2% | Reduced |
| Plan Group Financial, LLC | 63,622 | $1.45M | 0.39% | +12,194+23.7% | Added |
| CAPROCK Group, Inc. | 60,323 | $1.48M | 0.04% | +60,323 | New |
| Creative Planning | 65,983 | $1.51M | 0.00% | +27,266+70.4% | Added |
| Grantham, Mayo, Van Otterloo & Co. LLC | 66,490 | $1.52M | 0.00% | −1,210−1.8% | Reduced |
| CI Private Wealth, LLC | 67,472 | $1.54M | 0.00% | +10,891+19.2% | Added |
| Ignite Planners, LLC | 69,467 | $1.59M | 0.26% | −1,891−2.7% | Reduced |
| Qube Research & Technologies Ltd | 72,070 | $1.65M | 0.00% | +21,296+41.9% | Added |
| HB Wealth Management, LLC | 77,376 | $1.77M | 0.01% | +1,170+1.5% | Added |
| Northern Trust Corp | 78,669 | $1.80M | 0.00% | −5,623−6.7% | Reduced |
| Barclays PLC | 88,917 | $2.03M | 0.00% | +88,917 | New |
| BNP Paribas Arbitrage, SA | 90,734 | $2.07M | 0.00% | −2,331−2.5% | Reduced |
| FJ Capital Management LLC | 91,827 | $2.10M | 0.23% | +91,827 | New |
| State Street Corp | 92,208 | $2.11M | 0.00% | +2,545+2.8% | Added |
| D. E. Shaw & Co., Inc. | 93,900 | $2.15M | 0.00% | +69,294+281.6% | Added |
| National Philanthropic Trust | 100,000 | $2.29M | 0.03% | +100,000 | New |
| IHT Wealth Management, LLC | 107,809 | $2.46M | 0.06% | +2,660+2.5% | Added |
| Waterloo Capital, L.P. | 108,404 | $2.48M | 0.18% | +4,631+4.5% | Added |
| Standard Life Aberdeen plc | 123,237 | $2.82M | 0.00% | 00.0% | Unchanged |
| Wealthstar Advisors, LLC | 129,495 | $2.96M | 1.17% | +130.0% | Added |
| Commonwealth Equity Services, LLC | 129,595 | $2.96M | 0.00% | −12,819−9.0% | Reduced |
| Argent Trust Co | 133,718 | $3.06M | 0.11% | −11,016−7.6% | Reduced |
| CWM, LLC | 135,502 | $3.10M | 0.01% | +71,126+110.5% | Added |
| Clayton Partners LLC | 137,122 | $3.13M | 2.38% | −180.0% | Reduced |
| Naviter Wealth, LLC | 149,764 | $3.42M | 0.40% | +12,056+8.8% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 150,549 | $3.44M | 0.01% | +60.0% | Added |
| Texas Capital Bank Wealth Management Services Inc | 153,996 | $3.52M | 0.29% | +5,979+4.0% | Added |
| Great West Life Assurance Co | 158,713 | $3.62M | 0.01% | +22,659+16.7% | Added |
| Denali Advisors LLC | 159,133 | $3.64M | 0.41% | −39,552−19.9% | Reduced |
| HRT Financial LP | 162,375 | $3.71M | 0.01% | −27,941−14.7% | Reduced |
| Truvestments Capital LLC | 169,392 | $3.87M | 0.70% | −24,571−12.7% | Reduced |
| Omers Administration Corp | 182,385 | $4.17M | 0.03% | +4,171+2.3% | Added |
| D.A. Davidson & Co. | 182,591 | $4.17M | 0.03% | +2,889+1.6% | Added |
| Parkwood LLC | 184,819 | $4.22M | 0.41% | 00.0% | Unchanged |
| Atom Investors LP | 187,604 | $4.29M | 0.33% | +187,604 | New |
| Rockefeller Capital Management L.P. | 205,934 | $4.71M | 0.01% | −1,178−0.6% | Reduced |
| RMR Capital Management, LLC | 214,249 | $4.90M | 3.42% | +23,754+12.5% | Added |
| Benjamin Edwards Inc | 214,689 | $4.91M | 0.06% | +2,713+1.3% | Added |