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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, Q4 2024

Institutional positions in Sixth Street Specialty Lending, Inc. as of Dec 31, 2024. 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
223
+24 vs. Q3 2024
Shares held
45.2M
+1.94M (+4.5%) vs. Q3 2024
Total value
$963.5M
+$74.5M (+8.4%) vs. Q3 2024
New holders
40
72 more added
Sold out
16
58 more reduced

3 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2024: 223 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 heldQ4 2024: $963.5M
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, Q4 2024

Shares, value and share of portfolio for each institution holding Sixth Street Specialty Lending, Inc.; share changes are against Q3 2024.

Institutions holding TSLX in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
CI Private Wealth, LLC38,464$819.3K0.00%+10,508+37.6%Added
Mirador Capital Partners LP37,483$798.4K0.14%−29−0.1%Reduced
Nations Financial Group Inc,36,436$776.1K0.06%−196−0.5%Reduced
Texas Yale Capital Corp.35,000$745.5K0.03%+10,250+41.4%Added
Invesco Ltd.33,418$711.8K0.00%−31−0.1%Reduced
Bryn Mawr Trust Co31,070$661.8K0.01%+31,070New
Susquehanna International Group, LLP30,826$656.6K0.00%−9,146−22.9%Reduced
Bouchey Financial Group Ltd30,252$644.4K0.06%00.0%Unchanged
Advisor Group Holdings, Inc.29,148$621.0K0.00%−13,172−31.1%Reduced
Barnett & Company, Inc.29,050$618.8K0.41%00.0%Unchanged
Platform Technology Partners28,925$616.1K0.19%+980+3.5%Added
Sargent Investment Group, LLC28,400$599.0K0.10%00.0%Unchanged
Sage Investment Counsel LLC26,233$558.8K0.73%+26,233New
Romano Brothers and Company26,200$558.1K0.07%−500−1.9%Reduced
Northeast Financial Consultants Inc26,000$553.8K0.02%00.0%Unchanged
Guggenheim Capital LLC25,587$545.0K0.00%+1,520+6.3%Added
Stratos Wealth Advisors, LLC25,567$544.6K0.03%+25,567New
Natixis25,249$537.8K0.00%−34−0.1%Reduced
Brevan Howard Capital Management LP25,218$537.1K0.01%+25,218New
Sanctuary Advisors, LLC24,089$536.7K0.00%−79−0.3%Reduced
US Bancorp25,113$534.9K0.00%−67−0.3%Reduced
Merrion Investment Management Co, LLC25,000$532.5K0.37%00.0%Unchanged
Rathbone Brothers plc24,202$515.5K0.00%00.0%Unchanged
Grimes & Company, Inc.23,394$498.3K0.01%+4,994+27.1%Added
Country Club Bank22,851$486.7K0.03%+22,851New
Savvy Advisors, Inc.22,812$485.9K0.06%+22,812New
Steward Partners Investment Advisory, LLC22,333$475.7K0.00%−1,300−5.5%Reduced
Private Advisor Group, LLC21,666$461.5K0.00%−3,837−15.0%Reduced
Marble Harbor Investment Counsel, LLC21,645$461.0K0.05%+1,445+7.2%Added
Parallel Advisors, LLC19,860$423.0K0.01%−200−1.0%Reduced
Plan Group Financial, LLC19,561$416.6K0.22%+19,561New
London & Capital Asset Management Ltd19,400$413.2K0.04%00.0%Unchanged
Chicago Partners Investment Group LLC19,399$408.9K0.01%+19,399New
XTX Topco Ltd18,394$391.8K0.03%+18,394New
Union Bancaire Privee, UBP SA18,384$391.6K0.01%+18,384New
Essex Financial Services, Inc.18,187$387.4K0.03%+18,187New
ProShare Advisors LLC18,086$385.2K0.00%+2,489+16.0%Added
IFG Advisory, LLC18,068$384.8K0.02%+142+0.8%Added
Clearstead Advisors, LLC18,000$383.4K0.01%00.0%Unchanged
Jane Street Group, LLC17,632$375.6K0.00%−31,741−64.3%Reduced
Hamilton Capital Partners Inc.17,340$369.3K0.03%−14,300−45.2%Reduced
Evergreen Capital Management LLC17,268$367.8K0.01%00.0%Unchanged
Balyasny Asset Management LLC15,680$334.0K0.00%+15,680New
Canton Hathaway, LLC15,450$329.0K0.08%+15,450New
Inspirion Wealth Advisors, LLC15,426$325.2K0.05%00.0%Unchanged
Principal Street Partners, LLC14,355$305.8K0.06%+14,355New
Global Retirement Partners, LLC14,284$304.2K0.01%−29,009−67.0%Reduced
Worth Asset Management, LLC14,190$302.3K0.16%+17+0.1%Added
Eagle Global Advisors LLC14,150$301.4K0.01%−6,800−32.5%Reduced
Citadel Advisors LLC14,025$298.7K0.00%−273,694−95.1%Reduced
Westmount Partners, LLC13,030$277.5K0.08%00.0%Unchanged
Bank of New York Mellon Corp12,811$272.9K0.00%+909+7.6%Added
Mallini Complete Financial Planning LLC12,470$265.5K0.25%+12,470New
Campbell & CO Investment Adviser LLC12,356$263.2K0.02%+12,356New
Integrated Wealth Concepts LLC11,942$254.4K0.00%+11,942New
Core Wealth Partners LLC11,668$248.5K0.14%00.0%Unchanged
Comerica Bank11,451$243.9K0.00%00.0%Unchanged
Advisory Research Inc11,391$242.6K0.04%−474−4.0%Reduced
Centiva Capital, LP11,033$235.0K0.01%+11,033New
AE Wealth Management LLC10,987$234.0K0.00%+274+2.6%Added
Nebula Research & Development LLC10,693$227.8K0.03%−13,640−56.1%Reduced
Stratos Wealth Partners, LTD.10,657$227.0K0.00%−602−5.3%Reduced
Robertson Stephens Wealth Management, LLC9,700$206.6K0.01%+9,700New
Whittier Trust Co of Nevada Inc9,575$203.9K0.01%00.0%Unchanged
Register Financial Advisors LLC7,629$162.5K0.08%+19+0.2%Added
The PNC Financial Services Group, Inc.7,341$156.4K0.00%00.0%Unchanged
EMC Capital Management6,747$144.0K0.08%+3,242+92.5%Added
Vaughan Nelson Investment Management, L.P.5,350$114.0K0.00%00.0%Unchanged
Citigroup Inc5,291$112.7K0.00%+1,251+31.0%Added
Atlas Capital Advisors LLC5,115$108.9K0.01%+5,115New
Frazier Financial Advisors, LLC4,814$102.5K0.08%00.0%Unchanged
Signaturefd, LLC4,673$99.5K0.00%+550+13.3%Added
Future Financial Wealth Managment LLC4,200$89.5K0.07%00.0%Unchanged
Security National Bank3,171$67.5K0.01%00.0%Unchanged
MAI Capital Management2,324$49.5K0.00%+2,324New
First Horizon Advisors, Inc.2,302$49.0K0.00%+465+25.3%Added
CIBC Private Wealth Group, LLC2,144$45.2K0.00%−983−31.4%Reduced
GWM Advisors LLC2,006$42.7K0.00%00.0%Unchanged
Federation des caisses Desjardins du Quebec2,000$42.6K0.00%00.0%Unchanged
BI Asset Management Fondsmaeglerselskab A/S1,879$40.0K0.00%−4,590−71.0%Reduced
Trust Co of Vermont1,834$39.1K0.00%+1,834New
Coppell Advisory Solutions LLC1,726$36.9K0.01%00.0%Unchanged
Geneos Wealth Management Inc.1,525$32.5K0.00%00.0%Unchanged
Group One Trading, L.P.1,521$32.4K0.00%+329+27.6%Added
Acadian Asset Management LLC1,434$30.0K0.00%+237+19.8%Added
Ameriflex Group, Inc.1,205$27.0K0.01%+1,205New
Tower Research Capital LLC (TRC)1,231$26.2K0.00%−1,757−58.8%Reduced
Northwestern Mutual Wealth Management Co1,200$25.6K0.00%+1,200New
Beacon Capital Management, LLC1,148$24.5K0.00%+28+2.5%Added
EverSource Wealth Advisors, LLC1,061$22.6K0.00%00.0%Unchanged
First Community Trust NA1,040$22.2K0.02%00.0%Unchanged
Huntington National Bank1,001$21.3K0.00%00.0%Unchanged
Community Bank, N.A.1,000$21.3K0.00%00.0%Unchanged
CWM, LLC802$17.0K0.00%+7+0.9%Added
Private Trust Co NA704$15.0K0.00%00.0%Unchanged
Bartlett & Co. Wealth Management LLC700$14.9K0.00%00.0%Unchanged
Farther Finance Advisors, LLC667$14.2K0.00%00.0%Unchanged
Quarry LP642$13.7K0.00%−3,452−84.3%Reduced
Synergy Financial Management, LLC594$12.2K0.00%+594New
Quadrant Capital Group LLC515$11.0K0.00%00.0%Unchanged