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, Q1 2026
Institutional positions in Sixth Street Specialty Lending, Inc. as of Mar 31, 2026. 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
- 260
- +8 vs. Q4 2025
- Shares held
- 52.1M
- +1.79M (+3.6%) vs. Q4 2025
- Total value
- $955.4M
- −$138.6M (−12.7%) vs. Q4 2025
- New holders
- 43
- 91 more added
- Sold out
- 35
- 75 more reduced
6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Sixth Street Specialty Lending, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Danske Bank A/S | 1 | $18 | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 3 | $54 | 0.00% | +3 | New |
| National Bank of Canada | 5 | $92 | 0.00% | −5−50.0% | Reduced |
| PMV Capital Advisers, LLC | 8 | $147 | 0.00% | +8 | New |
| Group One Trading, L.P. | 19 | $349 | 0.00% | +19 | New |
| FMR LLC | 35 | $634 | 0.00% | −45−56.3% | Reduced |
| GAMMA Investing LLC | 37 | $680 | 0.00% | 00.0% | Unchanged |
| SJS Investment Consulting Inc. | 45 | $828 | 0.00% | +1+2.3% | Added |
| Hager Investment Management Services, LLC | 57 | $1.04K | 0.00% | 00.0% | Unchanged |
| Brown Brothers Harriman & Co | 100 | $1.84K | 0.00% | 00.0% | Unchanged |
| Triumph Capital Management | 100 | $1.84K | 0.00% | 00.0% | Unchanged |
| Glen Eagle Advisors, LLC | 100 | $1.84K | 0.00% | 00.0% | Unchanged |
| Provenance Wealth Advisors, LLC | 100 | $1.84K | 0.00% | 00.0% | Unchanged |
| Advantage Trust Co | 100 | $1.84K | 0.00% | +100 | New |
| Hilton Head Capital Partners, LLC | 120 | $2.21K | 0.00% | +120 | New |
| Quantbot Technologies LP | 129 | $2.37K | 0.00% | −21,525−99.4% | Reduced |
| Umb Bank N A | 158 | $2.90K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 238 | $4.37K | 0.00% | +55+30.1% | Added |
| Delta Asset Management LLC | 250 | $4.59K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 353 | $6.50K | 0.00% | +53+17.7% | Added |
| Rossby Financial, LCC | 397 | $7.19K | 0.00% | 00.0% | Unchanged |
| Atlantic Union Bankshares Corp | 400 | $7.35K | 0.00% | 00.0% | Unchanged |
| Blume Capital Management, Inc. | 450 | $8.27K | 0.00% | 00.0% | Unchanged |
| Valley National Advisers Inc | 500 | $9.00K | 0.00% | 00.0% | Unchanged |
| Westside Investment Management, Inc. | 572 | $10.5K | 0.00% | 00.0% | Unchanged |
| Private Trust Co NA | 600 | $11.0K | 0.00% | 00.0% | Unchanged |
| International Assets Investment Management, LLC | 644 | $11.7K | 0.00% | 00.0% | Unchanged |
| Hilltop National Bank | 684 | $12.6K | 0.00% | +684 | New |
| AdvisorNet Financial, Inc | 900 | $16.5K | 0.00% | −1,300−59.1% | Reduced |
| Community Bank, N.A. | 1,000 | $18.4K | 0.00% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 1,000 | $18.4K | 0.00% | +1,000 | New |
| Basso Capital Management, L.P. | 1,000 | $18.4K | 0.01% | +1,000 | New |
| Huntington National Bank | 1,001 | $18.4K | 0.00% | 00.0% | Unchanged |
| First Community Trust NA | 1,040 | $19.1K | 0.01% | 00.0% | Unchanged |
| Geneos Wealth Management Inc. | 1,525 | $28.0K | 0.00% | 00.0% | Unchanged |
| Innovative Asset Advisors Group, LLC | 1,700 | $31.2K | 0.02% | +1,700 | New |
| Harbor Investment Advisory, LLC | 1,738 | $31.9K | 0.00% | +6+0.3% | Added |
| Caitong International Asset Management Co., Ltd | 1,871 | $34.4K | 0.01% | +1,871 | New |
| Jones Financial Companies LLLP | 1,984 | $34.7K | 0.00% | −27−1.3% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 2,002 | $37.0K | 0.00% | +43+2.2% | Added |
| MTM Investment Management, LLC | 2,040 | $37.5K | 0.01% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 2,169 | $39.9K | 0.00% | +276+14.6% | Added |
| MAI Capital Management | 2,436 | $44.8K | 0.00% | −697−22.2% | Reduced |
| Osbon Capital Management LLC | 2,740 | $50.4K | 0.04% | +2,740 | New |
| Quadrant Capital Group LLC | 2,773 | $51.0K | 0.00% | +2,462+791.6% | Added |
| Advisory Services Network, LLC | 2,926 | $53.8K | 0.00% | +2,926 | New |
| Burk Holdings LLC | 2,952 | $54.3K | 0.02% | +2,952 | New |
| Harbour Investments, Inc. | 3,156 | $58.0K | 0.00% | +2,978+1,673.0% | Added |
| Union Bancaire Privee, UBP SA | 3,482 | $62.4K | 0.00% | −11,532−76.8% | Reduced |
| Fifth Third Bancorp | 3,444 | $63.3K | 0.00% | +3,444 | New |
| Signaturefd, LLC | 3,516 | $64.6K | 0.00% | −1,382−28.2% | Reduced |
| Farther Finance Advisors, LLC | 3,669 | $66.4K | 0.00% | +244+7.1% | Added |
| Federation des caisses Desjardins du Quebec | 4,000 | $73.5K | 0.00% | 00.0% | Unchanged |
| Titiun Yejiel | 4,000 | $73.5K | 0.07% | 00.0% | Unchanged |
| Wall Street Access Asset Management, LLC | 80,000 | $79.5K | 0.02% | +80,000 | New |
| Key Capital Management, INC | 4,389 | $80.7K | 0.05% | −1,927−30.5% | Reduced |
| State of Alaska, Department of Revenue | 4,529 | $83.0K | 0.00% | 00.0% | Unchanged |
| Frazier Financial Advisors, LLC | 4,814 | $88.5K | 0.05% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 5,000 | $91.9K | 0.00% | 00.0% | Unchanged |
| Atlas Capital Advisors LLC | 5,115 | $94.0K | 0.01% | 00.0% | Unchanged |
| Annis Gardner Whiting Capital Advisors, LLC | 5,235 | $96.2K | 0.02% | 00.0% | Unchanged |
| Vaughan Nelson Investment Management, L.P. | 5,350 | $98.3K | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 5,508 | $101.2K | 0.00% | +62+1.1% | Added |
| North Star Investment Management Corp. | 6,017 | $110.6K | 0.01% | +6,017 | New |
| Simplex Trading, LLC | 6,590 | $121.1K | 0.00% | +6,590 | New |
| Tower Research Capital LLC (TRC) | 7,217 | $132.6K | 0.00% | +7,211+120,183.3% | Added |
| The PNC Financial Services Group, Inc. | 7,341 | $134.9K | 0.00% | 00.0% | Unchanged |
| Sunbelt Securities, Inc. | 8,478 | $155.8K | 0.01% | +8,478 | New |
| Register Financial Advisors LLC | 9,125 | $167.7K | 0.06% | +23+0.3% | Added |
| Caz Investments LP | 10,000 | $183.8K | 0.22% | +10,000 | New |
| Stratos Wealth Partners, LTD. | 10,092 | $185.5K | 0.00% | +45+0.4% | Added |
| Miller Global Investments, LLC | 10,367 | $190.5K | 0.17% | 00.0% | Unchanged |
| Worth Asset Management, LLC | 10,581 | $194.5K | 0.07% | −1,979−15.8% | Reduced |
| Private Advisor Group, LLC | 10,728 | $197.2K | 0.00% | −11,219−51.1% | Reduced |
| Investor's Fiduciary Advisor Network, LLC | 10,898 | $200.0K | 0.06% | −6,410−37.0% | Reduced |
| Principle Wealth Partners LLC | 11,309 | $207.9K | 0.01% | +1,038+10.1% | Added |
| Laird Norton Trust Company, LLC | 11,467 | $210.8K | 0.00% | −47−0.4% | Reduced |
| Core Wealth Partners LLC | 11,668 | $214.5K | 0.10% | 00.0% | Unchanged |
| Prospera Financial Services Inc | 12,027 | $221.1K | 0.00% | +12,027 | New |
| Oppenheimer & Co Inc | 12,375 | $227.5K | 0.00% | +452+3.8% | Added |
| Natixis | 12,624 | $232.0K | 0.00% | −12,625−50.0% | Reduced |
| Westmount Partners, LLC | 13,030 | $239.5K | 0.06% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 13,139 | $241.5K | 0.00% | −4,336−24.8% | Reduced |
| Calton & Associates, Inc. | 13,193 | $242.5K | 0.03% | +13,193 | New |
| Indivisible Partners | 13,202 | $242.7K | 0.02% | +13,202 | New |
| Summit Financial, LLC | 13,711 | $252.0K | 0.00% | +13,711 | New |
| Hennion & Walsh Asset Management, Inc. | 13,860 | $254.7K | 0.01% | −20,389−59.5% | Reduced |
| Principal Street Partners, LLC | 13,945 | $256.3K | 0.04% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 14,086 | $258.9K | 0.00% | −239−1.7% | Reduced |
| Aquatic Capital Management LLC | 14,281 | $262.5K | 0.01% | −50,207−77.9% | Reduced |
| Pasadena Private Wealth, LLC | 14,289 | $262.6K | 0.04% | +1,500+11.7% | Added |
| Price T Rowe Associates Inc | 14,607 | $269.0K | 0.00% | −7,298−33.3% | Reduced |
| Angeles Wealth Management, LLC | 15,000 | $275.7K | 0.02% | 00.0% | Unchanged |
| First Affirmative Financial Network | 15,121 | $277.9K | 0.11% | +15,121 | New |
| GWM Advisors LLC | 15,331 | $281.8K | 0.00% | +3,887+34.0% | Added |
| Inspirion Wealth Advisors, LLC | 15,426 | $283.5K | 0.04% | 00.0% | Unchanged |
| Whalerock Point Partners, LLC | 15,498 | $284.8K | 0.05% | −4,240−21.5% | Reduced |
| Kavar Capital Partners Group, LLC | 15,632 | $287.3K | 0.04% | +15,632 | New |
| Parallel Advisors, LLC | 15,808 | $290.6K | 0.01% | −7,527−32.3% | Reduced |
| Heritage Trust Co | 15,889 | $292.0K | 0.03% | 00.0% | Unchanged |