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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, Q2 2025

Institutional positions in Sixth Street Specialty Lending, Inc. as of Jun 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
245
+10 vs. Q1 2025
Shares held
48.9M
+1.17M (+2.5%) vs. Q1 2025
Total value
$1.16B
+$95.9M (+9.0%) vs. Q1 2025
New holders
31
98 more added
Sold out
21
65 more reduced

1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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.

Institutional holdersQ2 2025: 245 institutions
Q1 2021: 159 institutionsQ2 2021: 158 institutionsQ3 2021: 159 institutionsQ4 2021: 168 institutionsQ1 2022: 171 institutionsQ2 2022: 180 institutionsQ3 2022: 175 institutionsQ4 2022: 196 institutionsQ1 2023: 195 institutionsQ2 2023: 202 institutionsQ3 2023: 205 institutionsQ4 2023: 223 institutionsQ1 2024: 220 institutionsQ2 2024: 224 institutionsQ3 2024: 202 institutionsQ4 2024: 223 institutionsQ1 2025: 236 institutionsQ2 2025: 245 institutionsQ3 2025: 247 institutionsQ4 2025: 258 institutionsQ1 2026: 260 institutionsQ2 2026: 242 institutions
Value heldQ2 2025: $1.16B
Q1 2021: $758.6MQ2 2021: $808.3MQ3 2021: $813.5MQ4 2021: $855.4MQ1 2022: $825.9MQ2 2022: $655.5MQ3 2022: $601.1MQ4 2022: $643.2MQ1 2023: $621.2MQ2 2023: $705.0MQ3 2023: $806.6MQ4 2023: $889.5MQ1 2024: $936.0MQ2 2024: $962.2MQ3 2024: $904.9MQ4 2024: $963.5MQ1 2025: $1.07BQ2 2025: $1.16BQ3 2025: $1.11BQ4 2025: $1.09BQ1 2026: $955.4MQ2 2026: $896.5M
Institutions holding TSLX and their total value by quarter
QuarterHoldersValue
Q2 2026242$896.5M
Q1 2026260$955.4M
Q4 2025258$1.09B
Q3 2025247$1.11B
Q2 2025245$1.16B
Q1 2025236$1.07B
Q4 2024223$963.5M
Q3 2024202$904.9M
Q2 2024224$962.2M
Q1 2024220$936.0M
Q4 2023223$889.5M
Q3 2023205$806.6M
Q2 2023202$705.0M
Q1 2023195$621.2M
Q4 2022196$643.2M
Q3 2022175$601.1M
Q2 2022180$655.5M
Q1 2022171$825.9M
Q4 2021168$855.4M
Q3 2021159$813.5M
Q2 2021158$808.3M
Q1 2021159$758.6M

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding Sixth Street Specialty Lending, Inc.; share changes are against Q1 2025.

Institutions holding TSLX in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Cornerstone Wealth Management, LLC46,666$1.11M0.07%−66−0.1%Reduced
Captrust Financial Advisors44,425$1.06M0.00%−19,960−31.0%Reduced
Foundations Investment Advisors, LLC42,122$1.00M0.02%+42,122New
Essex Financial Services, Inc.41,047$977.3K0.06%+1,795+4.6%Added
Advisor Group Holdings, Inc.40,339$960.8K0.00%−2,086−4.9%Reduced
Evoke Wealth, LLC39,859$949.0K0.02%00.0%Unchanged
Dakota Wealth Management39,220$933.8K0.02%+2,995+8.3%Added
Kestra Advisory Services, LLC39,024$929.2K0.00%−8,348−17.6%Reduced
Brown Advisory Inc38,999$928.6K0.00%−6,869−15.0%Reduced
Creative Planning38,717$921.9K0.00%−1,419−3.5%Reduced
Mariner, LLC38,629$919.8K0.00%+4,491+13.2%Added
Barnett & Company, Inc.36,750$875.0K0.69%+6,700+22.3%Added
Nations Financial Group Inc,35,508$845.4K0.06%−879−2.4%Reduced
Texas Yale Capital Corp.35,500$845.3K0.03%+500+1.4%Added
Savvy Advisors, Inc.35,138$836.6K0.06%+4,825+15.9%Added
Diversify Advisory Services, LLC32,519$787.0K0.03%+32,519New
Bramshill Investments, LLC32,652$777.4K0.08%−29,512−47.5%Reduced
Lazard Asset Management LLC32,266$768.0K0.00%−19,821−38.1%Reduced
Bryn Mawr Trust Co31,070$739.8K0.01%00.0%Unchanged
Invesco Ltd.30,628$729.3K0.00%+2,263+8.0%Added
Bouchey Financial Group Ltd30,252$720.3K0.06%00.0%Unchanged
Ellsworth Advisors, LLC29,815$709.9K0.17%+29,815New
Ethos Financial Group, LLC29,811$709.8K0.06%−10,580−26.2%Reduced
Virtus Investment Advisers, Inc.29,302$697.7K0.24%−10,656−26.7%Reduced
Sargent Investment Group, LLC28,400$681.6K0.09%00.0%Unchanged
Platform Technology Partners27,945$665.4K0.17%−1,440−4.9%Reduced
Guggenheim Capital LLC26,971$642.2K0.01%+1,481+5.8%Added
Sage Investment Counsel LLC26,277$625.7K0.73%00.0%Unchanged
Northeast Financial Consultants Inc26,000$619.1K0.03%00.0%Unchanged
Romano Brothers and Company25,200$601.3K0.07%+8,000+46.5%Added
Natixis25,249$601.2K0.00%00.0%Unchanged
DRW Securities, LLC25,122$598.2K0.04%+25,122New
US Bancorp25,113$597.9K0.00%00.0%Unchanged
Merrion Investment Management Co, LLC25,000$595.3K0.39%00.0%Unchanged
D. E. Shaw & Co., Inc.24,606$585.9K0.00%+24,606New
Generali Investments CEE, investicni spolecnost, a.s.24,084$573.4K0.05%+1,038+4.5%Added
Sanctuary Advisors, LLC23,535$560.4K0.00%−134−0.6%Reduced
Chicago Partners Investment Group LLC22,864$560.2K0.02%+300+1.3%Added
Mirador Capital Partners LP21,920$521.9K0.08%+919+4.4%Added
Private Advisor Group, LLC21,868$520.7K0.00%+298+1.4%Added
IFG Advisory, LLC20,608$490.7K0.02%+2,580+14.3%Added
Delphi Financial Group, Inc.20,041$477.2K0.34%−25,065−55.6%Reduced
Silver Oak Securities, Inc19,955$475.1K0.04%+11,829+145.6%Added
Steward Partners Investment Advisory, LLC19,502$464.3K0.00%+236+1.2%Added
London & Capital Asset Management Ltd19,400$461.9K0.04%00.0%Unchanged
ProShare Advisors LLC19,159$456.2K0.00%−735−3.7%Reduced
Integrated Wealth Concepts LLC18,339$436.6K0.00%+1,800+10.9%Added
Parallel Advisors, LLC18,012$428.9K0.01%−2,696−13.0%Reduced
Clearstead Advisors, LLC18,000$428.6K0.01%00.0%Unchanged
Balyasny Asset Management LLC17,540$417.6K0.00%+17,540New
Evergreen Capital Management LLC16,513$393.2K0.01%−755−4.4%Reduced
Buckingham Strategic Partners16,296$388.0K0.01%+7,320+81.6%Added
Family Wealth Partners, LLC16,297$388.0K0.16%+7,320+81.5%Added
Squarepoint Ops LLC16,052$382.2K0.00%+3,196+24.9%Added
Heritage Trust Co15,580$371.0K0.04%+15,580New
Inspirion Wealth Advisors, LLC15,426$367.3K0.05%00.0%Unchanged
Mallini Complete Financial Planning LLC15,226$362.4K0.46%+2,198+16.9%Added
Mirae Asset Global Investments Co., Ltd.15,050$358.3K0.00%+6,031+66.9%Added
Verition Fund Management LLC14,825$353.0K0.00%+14,825New
Susquehanna International Group, LLP14,726$350.6K0.00%−22,858−60.8%Reduced
Principal Street Partners, LLC14,570$346.9K0.03%−710−4.6%Reduced
Worth Asset Management, LLC14,322$341.0K0.17%+15+0.1%Added
Eagle Global Advisors LLC14,150$336.9K0.01%00.0%Unchanged
Whalerock Point Partners, LLC13,200$314.3K0.07%+2,575+24.2%Added
Westmount Partners, LLC13,030$310.2K0.09%00.0%Unchanged
Bank of New York Mellon Corp12,595$299.9K0.00%+696+5.8%Added
Magnus Financial Group LLC12,526$298.2K0.03%−1,880−13.1%Reduced
Grimes & Company, Inc.12,161$289.6K0.01%+12,161New
Principle Wealth Partners LLC11,701$278.6K0.02%−1,449−11.0%Reduced
Core Wealth Partners LLC11,668$277.8K0.14%00.0%Unchanged
Wetherby Asset Management Inc11,514$274.1K0.01%+11,514New
Concurrent Investment Advisors, LLC11,138$265.2K0.01%+11,138New
Advisory Research Inc10,564$251.5K0.04%−166−1.5%Reduced
Marble Harbor Investment Counsel, LLC10,210$243.1K0.03%−1,135−10.0%Reduced
Pasadena Private Wealth, LLC10,090$240.2K0.04%−1,079−9.7%Reduced
Robertson Stephens Wealth Management, LLC9,700$231.0K0.01%00.0%Unchanged
Glenview Trust Co9,700$231.0K0.00%+9,700New
Whittier Trust Co of Nevada Inc9,575$227.9K0.01%00.0%Unchanged
Stratos Wealth Partners, LTD.9,484$225.8K0.00%+30+0.3%Added
AE Wealth Management LLC9,361$222.9K0.00%−1,504−13.8%Reduced
Comerica Bank9,280$221.0K0.00%+1,025+12.4%Added
Mercer Global Advisors Inc8,733$207.9K0.00%+8,733New
Stableford Capital II LLC8,500$207.8K0.08%+8,500New
Atria Wealth Solutions, Inc.8,570$204.1K0.00%+8,570New
LexAurum Advisors, LLC8,454$201.3K0.03%+8,454New
Register Financial Advisors LLC7,665$182.5K0.08%+18+0.2%Added
The PNC Financial Services Group, Inc.7,341$174.8K0.00%00.0%Unchanged
Nomura Asset Management Co Ltd6,588$156.9K0.00%+6,588New
EMC Capital Management6,120$146.0K0.08%−627−9.3%Reduced
Vaughan Nelson Investment Management, L.P.5,350$127.4K0.00%00.0%Unchanged
Annis Gardner Whiting Capital Advisors, LLC5,235$124.6K0.04%00.0%Unchanged
Atlas Capital Advisors LLC5,115$121.8K0.01%00.0%Unchanged
Frazier Financial Advisors, LLC4,814$114.6K0.08%00.0%Unchanged
Signaturefd, LLC4,659$110.9K0.00%−444−8.7%Reduced
MAI Capital Management4,264$101.5K0.00%+1,940+83.5%Added
Future Financial Wealth Managment LLC4,200$100.0K0.07%00.0%Unchanged
First Horizon Advisors, Inc.4,123$98.2K0.00%+1,753+74.0%Added
Federation des caisses Desjardins du Quebec4,000$95.2K0.00%00.0%Unchanged
Redmont Wealth Advisors LLC3,607$85.9K0.13%−734−16.9%Reduced
Security National Bank3,361$80.0K0.01%+189+6.0%Added