Who owns Sixth Street Specialty Lending, Inc.?
Institutional ownership of TSLX from SEC Form 13F filings across 152 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.
152
13F holders
$556.3M
value, 2026 filers
34.7%
of shares outstanding (32.9M sh)
17
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 | Sound Income Strategies, LLC | 2.7M | $46.5M | 2.1% | 2.8% | +5.3% |
| 3 | UBS Group AG | 2.4M | $40.7M | 0.0% | 2.5% | +27.7% |
| 4 | VAN ECK ASSOCIATES CORP | 2.4M | $40.6M | 0.0% | 2.5% | +28.1% |
| 5 | OMERS ADMINISTRATION Corp | 2.0M | $34.6M | 0.2% | 2.1% | +2.6% |
| 6 | WELLS FARGO & COMPANY/MN | 1.3M | $22.6M | 0.0% | 1.4% | -1.7% |
| 7 | Cerity Partners LLC | 1.2M | $20.7M | 0.0% | 1.3% | +6.3% |
| 8 | MORGAN STANLEY | 1.1M | $18.4M | 0.0% | 1.1% | -19.4% |
| 9 | Sumitomo Mitsui Trust Group, Inc. | 792,452 | $13.6M | 0.0% | 0.8% | +2.9% |
| 10 | Legal & General Group Plc | 787,794 | $13.5M | 0.0% | 0.8% | +7.5% |
| 11 | BANK OF AMERICA CORP /DE/ | 764,474 | $13.1M | 0.0% | 0.8% | +3.9% |
| 12 | RAYMOND JAMES FINANCIAL INC | 736,813 | $12.7M | 0.0% | 0.8% | -19.8% |
| 13 | FRANKLIN RESOURCES INC | 719,709 | $12.4M | 0.0% | 0.8% | +18.0% |
| 14 | Pathstone Holdings, LLC | 672,162 | $11.5M | 0.0% | 0.7% | +51.8% |
| 15 | LPL Financial LLC | 651,650 | $11.2M | 0.0% | 0.7% | -3.1% |
| 16 | GOLDMAN SACHS GROUP INC | 624,772 | $10.7M | 0.0% | 0.7% | -2.3% |
| 17 | JPMORGAN CHASE & CO | 507,514 | $8.7M | 0.0% | 0.5% | -20.9% |
| 18 | Cresset Asset Management, LLC | 501,191 | $8.6M | 0.0% | 0.5% | +7.2% |
| 19 | NEUBERGER BERMAN GROUP LLC | 496,166 | $8.5M | 0.0% | 0.5% | -4.9% |
| 20 | BlackRock, Inc. | 435,903 | $7.5M | 0.0% | 0.5% | -5.6% |
| 21 | MGO ONE SEVEN LLC | 343,844 | $5.9M | 0.1% | 0.4% | -4.1% |
| 22 | IFP Advisors, Inc | 305,604 | $5.2M | 0.1% | 0.3% | +30.6% |
| 23 | Altshuler Shaham Ltd | 301,460 | $5.2M | 0.1% | 0.3% | 0.0% |
| 24 | Janney Montgomery Scott LLC | 269,078 | $4,620 | 0.0% | 0.3% | +30.3% |
| 25 | Qube Research & Technologies Ltd | 224,404 | $3.9M | 0.0% | 0.2% | -63.3% |
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.