Who owns Sixth Street Specialty Lending, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of TSLX from SEC Form 13F filings across 242 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 242 institutions disclosed 52.2M shares of Sixth Street Specialty Lending, Inc. worth $906.5M — about 55% of shares outstanding; the largest disclosed holder is STRS OHIO. Source: SEC Form 13F filings, parsed by EvidInvest.
242
13F holders
$906.5M
value, 2026 filers
55%
of shares outstanding (52.2M sh)
26
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of TSLX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | STRS OHIO | 6.0M | $103.5M | 0.4% | 6.3% | +38.7% |
| 2 | Sixth Street Partners Management Company, L.P. | 2.7M | $46.6M | 8.0% | 2.9% | 0.0% |
| 3 | Sound Income Strategies, LLC | 2.7M | $46.5M | 2.1% | 2.8% | +5.3% |
| 4 | Progeny 3, Inc. | 2.5M | $42.5M | 2.2% | 2.6% | 0.0% |
| 5 | UBS Group AG | 2.4M | $40.7M | 0.0% | 2.5% | +27.7% |
| 6 | VAN ECK ASSOCIATES CORP | 2.4M | $40.6M | 0.0% | 2.5% | +28.1% |
| 7 | OMERS ADMINISTRATION Corp | 2.0M | $34.6M | 0.2% | 2.1% | +2.6% |
| 8 | ARES MANAGEMENT LLC | 1.4M | $24.1M | 1.1% | 1.5% | +3.7% |
| 9 | Allen Investment Management, LLC | 1.4M | $23.5M | 0.3% | 1.4% | -1.9% |
| 10 | WELLS FARGO & COMPANY/MN | 1.3M | $22.6M | 0.0% | 1.4% | -1.7% |
| 11 | Cerity Partners LLC | 1.2M | $20.7M | 0.0% | 1.3% | +6.3% |
| 12 | Callodine Capital Management, LP | 1.2M | $20.2M | 1.3% | 1.2% | +4.1% |
| 13 | Muzinich & Co., Inc. | 1.1M | $18.5M | 6.3% | 1.1% | +2.7% |
| 14 | MORGAN STANLEY | 1.1M | $18.4M | 0.0% | 1.1% | -19.4% |
| 15 | RIVERNORTH CAPITAL MANAGEMENT, LLC | 969,599 | $16.6M | 0.8% | 1% | +233.2% |
| 16 | Advisors Capital Management, LLC | 864,107 | $14.8M | 0.2% | 0.9% | +10.0% |
| 17 | TECTONIC ADVISORS LLC | 845,203 | $14.5M | 0.7% | 0.9% | +16.1% |
| 18 | Sumitomo Mitsui Trust Group, Inc. | 792,452 | $13.6M | 0.0% | 0.8% | +2.9% |
| 19 | LSV ASSET MANAGEMENT | 789,100 | $13.5M | 0.0% | 0.8% | 0.0% |
| 20 | Legal & General Group Plc | 787,794 | $13.5M | 0.0% | 0.8% | +7.5% |
| 21 | BANK OF AMERICA CORP /DE/ | 764,474 | $13.1M | 0.0% | 0.8% | +3.9% |
| 22 | RAYMOND JAMES FINANCIAL INC | 736,813 | $12.7M | 0.0% | 0.8% | -19.8% |
| 23 | FRANKLIN RESOURCES INC | 719,709 | $12.4M | 0.0% | 0.8% | +18.0% |
| 24 | SCS Capital Management LLC | 692,199 | $11.9M | 0.1% | 0.7% | +3.9% |
| 25 | Pathstone Holdings, LLC | 672,162 | $11.5M | 0.0% | 0.7% | +51.8% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.