Who owns SELLAS Life Sciences Group, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of SLS from SEC Form 13F filings across 193 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, 193 institutions disclosed 73.7M shares of SELLAS Life Sciences Group, Inc. worth $1.08B — about 39% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
193
13F holders
$1.08B
value, 2026 filers
39%
of shares outstanding (73.7M sh)
66
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 SLS's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 15.1M | $222.4M | 0.0% | 8% | +23.5% |
| 2 | STATE STREET CORP | 13.0M | $191.8M | 0.0% | 6.9% | +54.8% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 8.2M | $121.4M | 0.0% | 4.3% | +9.3% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 4.9M | $72.1M | 0.0% | 2.6% | +24.8% |
| 5 | Anson Funds Management LPNEW | 4.5M | $66.4M | 3.9% | 2.4% | new |
| 6 | JONES FINANCIAL COMPANIES LLLP | 2.3M | $28.6M | 0.0% | 1.2% | +37.6% |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.2M | $31.9M | 0.0% | 1.1% | +47.7% |
| 8 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 2.1M | $30.3M | 0.0% | 1.1% | +416.5% |
| 9 | NORTHERN TRUST CORP | 1.6M | $23.9M | 0.0% | 0.9% | +27.0% |
| 10 | VANGUARD FIDUCIARY TRUST CO | 1.3M | $19.7M | 0.0% | 0.7% | +11.0% |
| 11 | UBS Group AG | 1.3M | $18.5M | 0.0% | 0.7% | +68.1% |
| 12 | MORGAN STANLEY | 1.2M | $18.2M | 0.0% | 0.7% | -7.5% |
| 13 | DAGCO, INC. | 1.2M | $18.2M | 3.4% | 0.7% | +19.8% |
| 14 | BNP PARIBAS FINANCIAL MARKETS | 1.1M | $15.8M | 0.0% | 0.6% | +2180.1% |
| 15 | BANK OF AMERICA CORP /DE/ | 787,949 | $11.6M | 0.0% | 0.4% | +22.8% |
| 16 | WELLINGTON MANAGEMENT GROUP LLP | 597,309 | $8.8M | 0.0% | 0.3% | +73.2% |
| 17 | GOLDMAN SACHS GROUP INC | 585,035 | $8.6M | 0.0% | 0.3% | +5.2% |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 565,008 | $8.3M | 0.0% | 0.3% | +17.6% |
| 19 | Bank of New York Mellon Corp | 530,025 | $7.8M | 0.0% | 0.3% | +10.8% |
| 20 | JANE STREET GROUP, LLCNEW | 508,429 | $7.5M | 0.0% | 0.3% | new |
| 21 | Nuveen, LLC | 418,729 | $6.2M | 0.0% | 0.2% | -37.6% |
| 22 | Opus Capital Group, LLC | 385,604 | $5.7M | 0.6% | 0.2% | +11.3% |
| 23 | Invesco Ltd. | 375,342 | $5.5M | 0.0% | 0.2% | -46.2% |
| 24 | Swiss National BankNEW | 360,400 | $5.3M | 0.0% | 0.2% | new |
| 25 | XTX Topco LtdNEW | 359,090 | $5.3M | 0.1% | 0.2% | new |
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.