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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, Q1 2025

Institutional positions in Sixth Street Specialty Lending, Inc. as of Mar 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
236
+15 vs. Q4 2024
Shares held
47.7M
+2.49M (+5.5%) vs. Q4 2024
Total value
$1.07B
+$104.4M (+10.8%) vs. Q4 2024
New holders
34
90 more added
Sold out
19
57 more reduced

2 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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 holdersQ1 2025: 236 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 heldQ1 2025: $1.07B
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, Q1 2025

Shares, value and share of portfolio for each institution holding Sixth Street Specialty Lending, Inc.; share changes are against Q4 2024.

Institutions holding TSLX in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Ethos Financial Group, LLC40,391$904.0K0.09%+40,391New
CI Private Wealth, LLC40,167$898.9K0.00%+1,703+4.4%Added
Creative Planning40,136$898.3K0.00%+10.0%Added
Virtus Investment Advisers, Inc.39,958$894.3K0.24%+39,958New
Evoke Wealth, LLC39,859$892.0K0.02%00.0%Unchanged
Essex Financial Services, Inc.39,252$878.5K0.06%+21,065+115.8%Added
Plan Group Financial, LLC38,923$871.1K0.31%+19,362+99.0%Added
Susquehanna International Group, LLP37,584$841.1K0.00%+6,758+21.9%Added
Nations Financial Group Inc,36,387$814.3K0.06%−49−0.1%Reduced
Dakota Wealth Management36,225$810.7K0.02%+36,225New
FJ Capital Management LLC35,944$804.4K0.08%+35,944New
Texas Yale Capital Corp.35,000$783.3K0.03%00.0%Unchanged
Mariner, LLC34,138$763.7K0.00%−5,481−13.8%Reduced
Beacon Pointe Advisors, LLC31,303$700.6K0.01%+31,303New
Bryn Mawr Trust Co31,070$695.3K0.01%00.0%Unchanged
Savvy Advisors, Inc.30,313$678.4K0.07%+7,501+32.9%Added
Bouchey Financial Group Ltd30,252$677.0K0.06%00.0%Unchanged
Barnett & Company, Inc.30,050$672.5K0.56%+1,000+3.4%Added
Platform Technology Partners29,385$657.6K0.19%+460+1.6%Added
Barclays PLC29,074$650.7K0.00%+29,074New
Sargent Investment Group, LLC28,400$635.6K0.10%00.0%Unchanged
Invesco Ltd.28,365$634.8K0.00%−5,053−15.1%Reduced
Citadel Advisors LLC26,890$601.8K0.00%+12,865+91.7%Added
Marshall Wace, LLP26,449$591.9K0.00%+26,449New
Sage Investment Counsel LLC26,277$588.1K0.75%+44+0.2%Added
Northeast Financial Consultants Inc26,000$581.9K0.03%00.0%Unchanged
Guggenheim Capital LLC25,490$570.5K0.01%−97−0.4%Reduced
Natixis25,249$563.6K0.00%00.0%Unchanged
US Bancorp25,113$562.0K0.00%00.0%Unchanged
State Street Corp25,062$560.9K0.00%+25,062New
Merrion Investment Management Co, LLC25,000$559.5K0.40%00.0%Unchanged
Rathbone Brothers plc24,202$541.6K0.00%00.0%Unchanged
Sanctuary Advisors, LLC23,669$529.7K0.00%−420−1.7%Reduced
Generali Investments CEE, investicni spolecnost, a.s.23,046$515.8K0.05%+23,046New
Private Advisor Group, LLC21,570$482.7K0.00%−96−0.4%Reduced
Chicago Partners Investment Group LLC22,564$470.7K0.02%+3,165+16.3%Added
Mirador Capital Partners LP21,001$470.0K0.08%−16,482−44.0%Reduced
Parallel Advisors, LLC20,708$463.4K0.01%+848+4.3%Added
ProShare Advisors LLC19,894$445.2K0.00%+1,808+10.0%Added
London & Capital Asset Management Ltd19,400$434.2K0.04%00.0%Unchanged
Steward Partners Investment Advisory, LLC19,266$431.2K0.00%−3,067−13.7%Reduced
Union Bancaire Privee, UBP SA18,384$411.4K0.01%00.0%Unchanged
IFG Advisory, LLC18,028$403.5K0.02%−40−0.2%Reduced
Clearstead Advisors, LLC18,000$402.8K0.01%00.0%Unchanged
Hamilton Capital Partners Inc.17,340$388.1K0.02%00.0%Unchanged
Evergreen Capital Management LLC17,268$386.5K0.01%00.0%Unchanged
Romano Brothers and Company17,200$384.9K0.05%−9,000−34.4%Reduced
Integrated Wealth Concepts LLC16,539$370.2K0.00%+4,597+38.5%Added
Lansforsakringar Fondforvaltning AB (publ)16,161$361.7K0.00%+16,161New
ExodusPoint Capital Management, LP15,600$349.0K0.00%+15,600New
Inspirion Wealth Advisors, LLC15,426$345.2K0.05%00.0%Unchanged
Principal Street Partners, LLC15,280$342.0K0.06%+925+6.4%Added
Magnus Financial Group LLC14,406$322.4K0.03%+14,406New
Worth Asset Management, LLC14,307$320.2K0.17%+117+0.8%Added
Eagle Global Advisors LLC14,150$316.7K0.01%00.0%Unchanged
TrueMark Investments, LLC13,535$302.9K0.08%−203,620−93.8%Reduced
Principle Wealth Partners LLC13,150$294.3K0.02%+13,150New
Westmount Partners, LLC13,030$291.6K0.09%00.0%Unchanged
Mallini Complete Financial Planning LLC13,028$291.6K0.28%+558+4.5%Added
Squarepoint Ops LLC12,856$287.7K0.00%+12,856New
Bank of New York Mellon Corp11,899$266.3K0.00%−912−7.1%Reduced
Core Wealth Partners LLC11,668$261.1K0.15%00.0%Unchanged
Marble Harbor Investment Counsel, LLC11,345$253.9K0.03%−10,300−47.6%Reduced
Pasadena Private Wealth, LLC11,169$250.0K0.05%+11,169New
AE Wealth Management LLC10,865$243.2K0.00%−122−1.1%Reduced
Advisory Research Inc10,730$240.1K0.04%−661−5.8%Reduced
Whalerock Point Partners, LLC10,625$237.8K0.06%+10,625New
Robertson Stephens Wealth Management, LLC9,700$217.1K0.01%00.0%Unchanged
Whittier Trust Co of Nevada Inc9,575$214.2K0.01%00.0%Unchanged
Stratos Wealth Partners, LTD.9,454$211.6K0.00%−1,203−11.3%Reduced
Virtu Financial LLC9,368$210.0K0.01%+9,368New
Mirae Asset Global Investments Co., Ltd.9,019$201.5K0.00%+9,019New
Buckingham Strategic Partners8,976$200.9K0.00%+8,976New
Family Wealth Partners, LLC8,977$200.9K0.09%+8,977New
Comerica Bank8,255$184.7K0.00%−3,196−27.9%Reduced
Silver Oak Securities, Inc8,126$181.5K0.02%+8,126New
Register Financial Advisors LLC7,647$171.2K0.09%+18+0.2%Added
The PNC Financial Services Group, Inc.7,341$164.3K0.00%00.0%Unchanged
EMC Capital Management6,747$151.0K0.09%00.0%Unchanged
Citigroup Inc5,761$128.9K0.00%+470+8.9%Added
Vaughan Nelson Investment Management, L.P.5,350$120.0K0.00%00.0%Unchanged
Annis Gardner Whiting Capital Advisors, LLC5,235$117.2K0.05%+5,235New
Atlas Capital Advisors LLC5,115$114.5K0.01%00.0%Unchanged
Signaturefd, LLC5,103$114.2K0.00%+430+9.2%Added
Frazier Financial Advisors, LLC4,814$107.7K0.08%00.0%Unchanged
Boston Private Wealth LLC4,787$107.1K0.00%+4,787New
Redmont Wealth Advisors LLC4,341$97.2K0.19%+4,341New
Future Financial Wealth Managment LLC4,200$94.0K0.07%00.0%Unchanged
Federation des caisses Desjardins du Quebec4,000$89.5K0.00%+2,000+100.0%Added
Security National Bank3,172$71.0K0.01%+10.0%Added
Rossby Financial, LCC2,980$62.3K0.03%+2,980New
Tower Research Capital LLC (TRC)2,579$57.7K0.00%+1,348+109.5%Added
First Horizon Advisors, Inc.2,370$53.0K0.00%+68+3.0%Added
MAI Capital Management2,324$52.0K0.00%00.0%Unchanged
Simplex Trading, LLC2,258$50.0K0.00%+2,258New
BI Asset Management Fondsmaeglerselskab A/S1,919$43.0K0.00%+40+2.1%Added
CIBC Private Wealth Group, LLC2,144$41.1K0.00%00.0%Unchanged
Trust Co of Vermont1,834$41.0K0.00%00.0%Unchanged
AdvisorNet Financial, Inc1,800$40.3K0.00%+1,800New
Geneos Wealth Management Inc.1,746$39.1K0.00%+221+14.5%Added