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Equibles

TSLX

Sixth Street Specialty Lending, Inc.

Company with tickers: TSLX

CIK
1508655
CUSIP
83012A109
Shares Outstanding
95,019,600
13F Activity (30d)
29 filings 9 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 264
Total Value: $1,245,077,413
Total Shares: 67,740,889
Showing 1–100 of 268 holdings by value · page 1 of 3

Institutional Ownership Trend

24 quarters

Holder Concentration

Across 264 13F filers · Δ vs Dec 31, 2025
Top Holder
22.0%
Jun 2023 → Mar 2026 · range 5.4% – 22.0%
+16.6 pts
Top 5
39.8%
Jun 2023 → Mar 2026 · range 24.7% – 39.8%
+15.2 pts
Top 10
52.3%
Jun 2023 → Mar 2026 · range 42.4% – 52.3%
+9.8 pts
HHI
640
Jun 2023 → Mar 2026 · range 248 – 640
Broadly held+392

Quarterly Activity

vs Dec 31, 2025
New
44
Increased
94
Decreased
76
Sold Out
41
Unchanged
50
Holder count: +3
Institutional value: +13.6%
Shares held: +34.3%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Large STRS OHIO +2,193,551 4,347,710
Large OMERS ADMINISTRATION Corp +1,492,704 1,961,813
Large Cerity Partners LLC +751,229 1,135,996
Large Qube Research & Technologies Ltd +342,227 611,805
Mid HBK INVESTMENTS L P +316,200 326,400

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega MORGAN STANLEY −1,063,013 1,327,615
Mega VAN ECK ASSOCIATES CORP −495,237 1,846,810
Mega BlackRock, Inc. −346,615 461,813
Mega JPMORGAN CHASE & CO −292,788 641,445
Mid Allen Investment Management, LLC −164,286 1,395,961

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mid Quantum Portfolio Management LLC 14,876,741 $273,434,499
Large Pathstone Holdings, LLC 442,900 $8,140,502
Mid RIVERNORTH CAPITAL MANAGEMENT, LLC 290,953 $5,347,716
Mid QVT Financial LP 200,000 $3,676,000
Mega D. E. Shaw & Co., Inc. 185,754 $3,414,158

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega BANK OF MONTREAL /CAN/ 2,284,920 $49,628,462
Large TWO SIGMA ADVISERS, LP 393,298 $8,542,432
Small Stratos Wealth Advisors, LLC 190,094 $4,128,841
Large Aberdeen Group plc 123,237 $2,676,707
Mega BARCLAYS PLC 72,066 $1,565,273
Filter: New 44 Increased 94 Reduced 76 Sold out 41 Unchanged 50
Showing 100 of 268
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mid Quantum Portfolio Management LLC $273,434,499 21.96% 14,876,741
Large STRS OHIO $79,910,909 6.42% 4,347,710
Small Sixth Street Partners Management Company, L.P. $49,887,473 4.01% 2,714,226
Mid Sound Income Strategies, LLC $47,255,935 3.80% 2,571,052
Mid Progeny 3, Inc. $45,516,195 3.66% 2,476,398
Large OMERS ADMINISTRATION Corp $36,058,122 2.90% 1,961,813
Mega UBS Group AG $34,154,947 2.74% 1,858,267
Mega VAN ECK ASSOCIATES CORP $33,944,367 2.73% 1,846,810
Mid Allen Investment Management, LLC $25,657,763 2.06% 1,395,961
Mid ARES MANAGEMENT LLC $24,900,838 2.00% 1,354,779
Mega WELLS FARGO & COMPANY/MN $24,603,890 1.98% 1,338,623
Mega MORGAN STANLEY $24,401,560 1.96% 1,327,615
Large Cerity Partners LLC $20,879,606 1.68% 1,135,996
Mid Callodine Capital Management, LP $20,760,577 1.67% 1,129,520
Small Muzinich & Co., Inc. $19,243,786 1.55% 1,046,996
Mega RAYMOND JAMES FINANCIAL INC $16,883,426 1.36% 918,576
Large LSV ASSET MANAGEMENT $14,503,878 1.16% 789,112
Mid Advisors Capital Management, LLC $14,437,214 1.16% 785,485
Mega Sumitomo Mitsui Trust Group, Inc. $14,155,779 1.14% 770,173
Large STIFEL FINANCIAL CORP $13,798,857 1.11% 750,754
Mega BANK OF AMERICA CORP /DE/ Bank $13,522,643 1.09% 735,726
Mega Legal & General Group Plc $13,466,070 1.08% 732,648
Small TECTONIC ADVISORS LLC $13,382,458 1.07% 728,099
Mega LPL Financial LLC $12,364,924 0.99% 672,738
Mid SCS Capital Management LLC $12,248,009 0.98% 666,377
Mega JPMORGAN CHASE & CO $11,789,758 0.95% 641,445
Mega GOLDMAN SACHS GROUP INC $11,758,769 0.94% 639,759
Mega ENVESTNET ASSET MANAGEMENT INC $11,751,988 0.94% 639,390
Large Qube Research & Technologies Ltd $11,244,975 0.90% 611,805
Small Melia Wealth LLC $11,231,007 0.90% 611,045
Mega FRANKLIN RESOURCES INC $11,211,928 0.90% 610,007
Large Cetera Investment Advisers $10,997,636 0.88% 598,348
Small Columbus Macro, LLC $10,093,744 0.81% 549,170
Mega NEUBERGER BERMAN GROUP LLC $9,591,051 0.77% 521,820
Small Gilman Hill Asset Management, LLC $8,894,762 0.71% 483,937
Large Cresset Asset Management, LLC $8,592,098 0.69% 467,470
Mega BlackRock, Inc. $8,488,120 0.68% 461,813
Large Pathstone Holdings, LLC $8,140,502 0.65% 442,900
Mega TWO SIGMA INVESTMENTS, LP $7,590,370 0.61% 412,969
Mid MGO ONE SEVEN LLC $6,587,281 0.53% 358,394
Mid Altshuler Shaham Ltd $5,540,834 0.45% 301,460
Mid RIVERNORTH CAPITAL MANAGEMENT, LLC $5,347,716 0.43% 290,953
Mid HBK INVESTMENTS L P $5,219,920 0.42% 284,000
Micro RMR Capital Management, LLC $4,646,611 0.37% 252,808
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $4,528,427 0.36% 246,378
Mid IFP Advisors, Inc $4,299,284 0.35% 233,911
Mid Advisors Asset Management, Inc. $4,047,128 0.33% 220,192
Mid National Philanthropic Trust $3,970,080 0.32% 216,000
Mid CONFLUENCE INVESTMENT MANAGEMENT LLC $3,819,179 0.31% 207,790
Large Janney Montgomery Scott LLC $3,796,407 0.30% 206,551
Mid D.A. DAVIDSON & CO. $3,686,917 0.30% 200,594
Mid QVT Financial LP $3,676,000 0.30% 200,000
Mega D. E. Shaw & Co., Inc. $3,414,158 0.27% 185,754
Small Parkwood LLC $3,396,973 0.27% 184,819
Small Truvestments Capital LLC $3,355,985 0.27% 182,589
Mid BENJAMIN EDWARDS INC $3,189,958 0.26% 173,556
Small Texas Capital Bank Wealth Management Services Inc Bank $3,064,938 0.25% 166,754
Mid Atom Investors LP $2,977,854 0.24% 162,016
Small Naviter Wealth, LLC $2,942,748 0.24% 160,106
Small Clayton Partners LLC $2,932,639 0.24% 159,556
Large LAZARD ASSET MANAGEMENT LLC $2,809,493 0.23% 152,856
Large Universal- Beteiligungs- und Servicegesellschaft mbH $2,767,347 0.22% 150,563
Large CANADA LIFE ASSURANCE Co Insurance $2,725,974 0.22% 148,312
Small DENALI ADVISORS LLC $2,662,931 0.21% 144,882
Mid RIVERBRIDGE PARTNERS LLC $2,641,279 0.21% 143,704
Small Waterloo Capital, L.P. $2,589,319 0.21% 140,877
Mid First National Trust Co Bank $2,530,319 0.20% 137,667
Large Russell Investments Group, Ltd. $2,479,700 0.20% 134,913
Mid Argent Trust Co Bank $2,386,108 0.19% 129,821
Small Wealthstar Advisors, LLC $2,380,651 0.19% 129,524
Large COMMONWEALTH EQUITY SERVICES, LLC $2,366,094 0.19% 128,732
Mega AMERIPRISE FINANCIAL INC $2,249,086 0.18% 122,366
Mega ROYAL BANK OF CANADA Bank $2,222,527 0.18% 120,921
Mid IHT Wealth Management, LLC $2,170,163 0.17% 118,072
Small Delphi Financial Group, Inc. $2,134,671 0.17% 116,141
Mid XTX Topco Ltd $2,119,048 0.17% 115,291
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $2,113,700 0.17% 115,000
Mega STATE STREET CORP $2,106,733 0.17% 114,621
Small Ignite Planners, LLC $2,056,336 0.17% 111,879
Micro Lifetime Wealth Management P.C. $1,790,506 0.14% 97,416
Mega BNP PARIBAS ARBITRAGE, SA $1,774,423 0.14% 96,541
Small Plan Group Financial, LLC $1,660,982 0.13% 90,369
Large Lansforsakringar Fondforvaltning AB (publ) $1,544,655 0.12% 84,040
Large &PARTNERS $1,488,394 0.12% 80,979
Small KELLEHER FINANCIAL ADVISORS $1,470,400 0.12% 80,000
Small Triad Investment Management $1,466,834 0.12% 79,806
Small Legacy Capital Wealth Partners, LLC $1,374,787 0.11% 74,798
Mid AE Wealth Management LLC $1,240,300 0.10% 67,481
Mid INDEPENDENT FINANCIAL GROUP, LLC $1,204,643 0.10% 65,541
Mid Beacon Pointe Advisors, LLC $1,149,099 0.09% 62,519
Large Quantinno Capital Management LP $1,141,379 0.09% 62,099
Large IEQ CAPITAL, LLC $1,116,088 0.09% 60,723
Mid Caprock Group, LLC $1,113,533 0.09% 60,584
Mega CITADEL ADVISORS LLC $1,053,174 0.08% 57,300
Large CWM, LLC $1,049,681 0.08% 57,110
Small TRED AVON FAMILY WEALTH, LLC $1,024,703 0.08% 55,751
Large Tidal Investments LLC $978,165 0.08% 53,219
Large Rockefeller Capital Management L.P. $970,831 0.08% 52,820
Large Lido Advisors, LLC $958,590 0.08% 52,154
Mid DEARBORN PARTNERS LLC $928,337 0.07% 50,508

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