Who owns Sixth Street Specialty Lending (TSLX)
Which tracked institutional funds hold TSLX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See TSLX company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on TSLX is one-sided between 2026-Q1 and 2026-Q2: 21 added or opened and 71 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
TSLX’s largest tracked holder by dollar value, STRS OHIO, sizes it at 0.4% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.4pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in TSLX divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 234 tracked filers holding TSLX, 108 increased or opened the position and 124 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in TSLX between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 3
- Lighthouse Investment Partners, LLC$3M
- Ilex Capital Partners (UK) LLP$2M
- Closed-End Fund Advisors, Inc.$548K
Full exits 20
- LSV ASSET MANAGEMENT$15M
- PANORAMIC INVESTMENT ADVISORS, LLC$11M
- Columbus Macro, LLC$10M
- MANUFACTURERS LIFE INSURANCE COMPANY, THE$5M
- Janney Montgomery Scott LLC$4M
- Parkwood LLC$3M
Largest adds
- STRS OHIO$24M
- RIVERNORTH CAPITAL MANAGEMENT, LLC$11M
- Union Bancaire Privee, UBP SA$9M
- VAN ECK ASSOCIATES CORP$7M
- UBS Group AG$7M
- Pathstone Holdings, LLC$3M
Largest trims
- STIFEL FINANCIAL CORP$10M
- ENVESTNET ASSET MANAGEMENT INC$10M
- Cetera Investment Advisers$10M
- Qube Research & Technologies Ltd$7M
- MORGAN STANLEY$6M
- TWO SIGMA INVESTMENTS, LP$6M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| STRS OHIO added | 6,029,281 | $104M | 12.1% | 2026-Q2 |
| Sixth Street Partners Management Company, L.P. | 2,714,226 | $47M | 5.5% | 2026-Q2 |
| Sound Income Strategies, LLC added | 2,706,290 | $46M | 5.4% | 2026-Q2 |
| Progeny 3, Inc. | 2,476,398 | $43M | 5.0% | 2026-Q2 |
| UBS Group AG added | 2,373,275 | $41M | 4.8% | 2026-Q2 |
| VAN ECK ASSOCIATES CORP added | 2,366,266 | $41M | 4.8% | 2026-Q2 |
| OMERS ADMINISTRATION Corp added | 2,012,327 | $35M | 4.0% | 2026-Q2 |
| ARES MANAGEMENT LLC added | 1,404,779 | $24M | 2.8% | 2026-Q2 |
| Allen Investment Management, LLC trimmed | 1,368,939 | $24M | 2.8% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 1,316,091 | $23M | 2.6% | 2026-Q2 |
| Cerity Partners LLC added | 1,207,716 | $21M | 2.4% | 2026-Q2 |
| Callodine Capital Management, LP added | 1,176,080 | $20M | 2.4% | 2026-Q2 |
| Muzinich & Co., Inc. added | 1,075,226 | $18M | 2.2% | 2026-Q2 |
| MORGAN STANLEY trimmed | 1,069,572 | $18M | 2.1% | 2026-Q2 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC added | 969,599 | $17M | 1.9% | 2026-Q2 |
| Advisors Capital Management, LLC added | 864,107 | $15M | 1.7% | 2026-Q2 |
| TECTONIC ADVISORS LLC added | 845,203 | $15M | 1.7% | 2026-Q2 |
| Sumitomo Mitsui Trust Group, Inc. added | 792,452 | $14M | 1.6% | 2026-Q2 |
| Legal & General Group Plc added | 787,794 | $14M | 1.6% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 764,474 | $13M | 1.5% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 736,813 | $13M | 1.5% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 719,709 | $12M | 1.4% | 2026-Q2 |
| SCS Capital Management LLC added | 692,199 | $12M | 1.4% | 2026-Q2 |
| Pathstone Holdings, LLC added | 672,162 | $12M | 1.4% | 2026-Q2 |
| LPL Financial LLC trimmed | 651,650 | $11M | 1.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 624,772 | $11M | 1.3% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 507,514 | $9M | 1.0% | 2026-Q2 |
| Cresset Asset Management, LLC added | 501,191 | $9M | 1.0% | 2026-Q2 |
| Gilman Hill Asset Management, LLC added | 500,602 | $9M | 1.0% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC trimmed | 496,166 | $9M | 1.0% | 2026-Q2 |
| Melia Wealth LLC trimmed | 486,337 | $8M | 1.0% | 2026-Q2 |
| BlackRock, Inc. trimmed | 435,903 | $7M | 0.9% | 2026-Q2 |
| National Philanthropic Trust added | 351,000 | $6M | 0.7% | 2026-Q2 |
| MGO ONE SEVEN LLC trimmed | 343,844 | $6M | 0.7% | 2026-Q2 |
| IFP Advisors, Inc added | 305,604 | $5M | 0.6% | 2026-Q2 |
| Altshuler Shaham Ltd | 301,460 | $5M | 0.6% | 2026-Q2 |
| RMR Capital Management, LLC added | 283,579 | $5M | 0.6% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 224,404 | $4M | 0.5% | 2026-Q2 |
| CONFLUENCE INVESTMENT MANAGEMENT LLC added | 211,954 | $4M | 0.4% | 2026-Q2 |
| Advisors Asset Management, Inc. trimmed | 210,833 | $4M | 0.4% | 2026-Q2 |
| D.A. DAVIDSON & CO. added | 210,672 | $4M | 0.4% | 2026-Q2 |
| STIFEL FINANCIAL CORP trimmed | 207,043 | $4M | 0.4% | 2026-Q2 |
| Lighthouse Investment Partners, LLC new | 203,539 | $3M | 0.4% | 2026-Q2 |
| Truvestments Capital LLC added | 185,157 | $3M | 0.4% | 2026-Q2 |
| Texas Capital Bank Wealth Management Services Inc added | 175,700 | $3M | 0.4% | 2026-Q2 |
| Naviter Wealth, LLC trimmed | 151,189 | $3M | 0.3% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 150,572 | $3M | 0.3% | 2026-Q2 |
| Clayton Partners LLC trimmed | 150,280 | $3M | 0.3% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 149,679 | $3M | 0.3% | 2026-Q2 |
| Waterloo Capital, L.P. added | 144,406 | $2M | 0.3% | 2026-Q2 |
| Atom Investors LP trimmed | 144,339 | $2M | 0.3% | 2026-Q2 |
| RIVERBRIDGE PARTNERS LLC trimmed | 143,587 | $2M | 0.3% | 2026-Q2 |
| IHT Wealth Management, LLC added | 142,870 | $2M | 0.3% | 2026-Q2 |
| DENALI ADVISORS LLC trimmed | 139,187 | $2M | 0.3% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 138,765 | $2M | 0.3% | 2026-Q2 |
| BENJAMIN EDWARDS INC trimmed | 138,093 | $2M | 0.3% | 2026-Q2 |
| Argent Trust Co added | 135,564 | $2M | 0.3% | 2026-Q2 |
| STATE STREET CORP added | 135,070 | $2M | 0.3% | 2026-Q2 |
| Ignite Planners, LLC added | 128,218 | $2M | 0.3% | 2026-Q2 |
| Wealthstar Advisors, LLC trimmed | 125,488 | $2M | 0.3% | 2026-Q2 |
| Plan Group Financial, LLC added | 120,324 | $2M | 0.2% | 2026-Q2 |
| COMMONWEALTH EQUITY SERVICES, LLC trimmed | 119,268 | $2M | 0.2% | 2026-Q2 |
| Delphi Financial Group, Inc. | 116,141 | $2M | 0.2% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 112,859 | $2M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 106,445 | $2M | 0.2% | 2026-Q2 |
| Ilex Capital Partners (UK) LLP new | 105,198 | $2M | 0.2% | 2026-Q2 |
| Lifetime Wealth Management P.C. added | 101,444 | $2M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 101,008 | $2M | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 100,911 | $2M | 0.2% | 2026-Q2 |
| AE Wealth Management LLC added | 98,204 | $2M | 0.2% | 2026-Q2 |
| Legacy Capital Wealth Partners, LLC added | 90,379 | $2M | 0.2% | 2026-Q2 |
| Lido Advisors, LLC added | 87,574 | $2M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 83,811 | $1M | 0.2% | 2026-Q2 |
| INDEPENDENT FINANCIAL GROUP, LLC added | 69,176 | $1M | 0.1% | 2026-Q2 |
| Cetera Investment Advisers trimmed | 68,660 | $1M | 0.1% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 68,649 | $1M | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 54,757 | $940K | 0.1% | 2026-Q2 |
| Savvy Advisors, Inc. added | 54,584 | $937K | 0.1% | 2026-Q2 |
| Tidal Investments LLC | 53,219 | $914K | 0.1% | 2026-Q2 |
| TRED AVON FAMILY WEALTH, LLC trimmed | 51,761 | $889K | 0.1% | 2026-Q2 |
| Main Street Financial Solutions, LLC added | 51,308 | $881K | 0.1% | 2026-Q2 |
| DEARBORN PARTNERS LLC | 50,508 | $928K | 0.1% | 2026-Q2 |
| BROWN ADVISORY INC trimmed | 46,502 | $798K | 0.1% | 2026-Q2 |
| Corient Private Wealth LP added | 45,470 | $781K | 0.1% | 2026-Q2 |
| Ehrenkranz Partners L.P. added | 43,015 | $739K | 0.1% | 2026-Q2 |
| DIVERSIFY WEALTH MANAGEMENT, LLC added | 42,458 | $727K | 0.1% | 2026-Q2 |
| Diversify Advisory Services, LLC added | 42,458 | $727K | 0.1% | 2026-Q2 |
| Whipplewood Advisors, LLC added | 40,558 | $696K | 0.1% | 2026-Q2 |
| PARK CIRCLE Co | 40,145 | $690K | 0.1% | 2026-Q2 |
| Canton Hathaway, LLC trimmed | 39,865 | $684K | 0.1% | 2026-Q2 |
| Rockefeller Capital Management L.P. trimmed | 39,294 | $675K | 0.1% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 36,587 | $628K | 0.1% | 2026-Q2 |
| Essex Financial Services, Inc. trimmed | 36,232 | $622K | 0.1% | 2026-Q2 |
| Hennion & Walsh Asset Management, Inc. added | 36,216 | $622K | 0.1% | 2026-Q2 |
| Platform Technology Partners trimmed | 35,975 | $618K | 0.1% | 2026-Q2 |
| FAMILY WEALTH PARTNERS, LLC added | 35,923 | $617K | 0.1% | 2026-Q2 |
| NATIONS FINANCIAL GROUP INC, /IA/ /ADV added | 34,996 | $601K | 0.1% | 2026-Q2 |
| Foundations Investment Advisors, LLC trimmed | 34,836 | $598K | 0.1% | 2026-Q2 |
| GUGGENHEIM CAPITAL LLC added | 34,255 | $588K | 0.1% | 2026-Q2 |
| Union Bancaire Privee, UBP SA | 3,482 | $10M | 1.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.