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Of the 10 tracked institutions holding SLS, 3 have a 3-year clone track record — 3 of them beat the S&P. Average holder's clone alpha: +4.4pt. It's a gauge of who owns the name, not just how many.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Among the 10 tracked institutional investors we monitor, SLS (SELLAS LIFE SCIENCES GROUP I) is held with a combined value of $464.50M across 37,831,550 shares. The largest holder is BlackRock, Inc. with a position worth $222.44M. 3 funds opened new positions in the most recent quarter. 7 funds increased their holdings.
Total Institutional Value
$464.50M
Total Shares Held
37,831,550
Institutional Holders
10
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $222.44M | 0.00% | +23.5% |
| 2 | STATE STREET CORP | $191.83M | 0.01% | +54.8% |
| 3 | VANGUARD GROUP INC | $31.92M | 0.00% | +23.8% |
| 4 | WELLINGTON MANAGEMENT GROUP LLP | $8.82M | 0.00% | +73.2% |
| 5 | RENAISSANCE TECHNOLOGIES LLC | $4.58M | 0.01% | New |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | $2.29M | 0.00% | +27.0% |
| 7 | Gotham Asset Management, LLC | $1.10M | 0.00% | New |
| 8 | AQR CAPITAL MANAGEMENT LLC | $857.85K | 0.00% | +7.6% |
| 9 | FMR LLC | $376.87K | 0.00% | +64.1% |
| 10 | TWO SIGMA ADVISERS, LP | $288.61K | 0.00% | New |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of SLS with a position worth $222.44M, representing 0.00% of their portfolio. In total, 10 institutional investors hold SLS with a combined value of $464.50M.
In the most recent quarter, 3 funds opened a new position in SLS. Additionally, 7 increased their holdings.
Institutional investors hold $464.50M worth of SLS stock across 10 positions. The largest institutional holder is BlackRock, Inc. with $222.44M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For SLS, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their SLS positions.
None this quarter.
| 2026-07-31 |
SEC Schedule 13D (activist) and 13G (passive) filings for SLS. Filed when an investor acquires 5%+ ownership.
Last Close
$12.14
2026-10-21
YTD
+179.1%
76% of 52-week range