Who owns Larimar Therapeutics, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of LRMR from SEC Form 13F filings across 163 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, 163 institutions disclosed 95.3M shares of Larimar Therapeutics, Inc. worth $291.7M — about 91.7% of shares outstanding; the largest disclosed holder is DEERFIELD MANAGEMENT COMPANY, L.P.. Source: SEC Form 13F filings, parsed by EvidInvest.
163
13F holders
$291.7M
value, 2026 filers
91.7%
of shares outstanding (95.3M sh)
35
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 LRMR's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | DEERFIELD MANAGEMENT COMPANY, L.P. | 35.6M | $108.6M | 1.1% | 34.3% | 0.0% |
| 2 | Blue Owl Capital Holdings LP | 9.2M | $27.9M | 4.2% | 8.8% | +28.7% |
| 3 | BlackRock, Inc. | 5.7M | $17.3M | 0.0% | 5.5% | +51.3% |
| 4 | Defilade Capital Management, L.P.NEW | 3.7M | $11.2M | 1.5% | 3.5% | new |
| 5 | Driehaus Capital Management LLC | 3.2M | $9.6M | 0.1% | 3% | +7.8% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 3.0M | $9.1M | 0.0% | 2.9% | +3.8% |
| 7 | RTW INVESTMENTS, LP | 2.6M | $7.8M | 0.1% | 2.5% | +71.1% |
| 8 | AQR CAPITAL MANAGEMENT LLC | 2.4M | $7.2M | 0.0% | 2.3% | +190.1% |
| 9 | MARSHALL WACE, LLP | 2.0M | $6.1M | 0.0% | 1.9% | +115.6% |
| 10 | DAFNA Capital Management LLC | 2.0M | $6.1M | 1.2% | 1.9% | -1.0% |
| 11 | GOLDMAN SACHS GROUP INC | 1.8M | $5.3M | 0.0% | 1.7% | +12.3% |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 1.7M | $5.1M | 0.0% | 1.6% | +51.4% |
| 13 | Qube Research & Technologies Ltd | 1.6M | $5.0M | 0.0% | 1.6% | +93.6% |
| 14 | CITADEL ADVISORS LLC | 1.5M | $4.4M | 0.0% | 1.4% | +180.6% |
| 15 | STATE STREET CORP | 1.4M | $4.3M | 0.0% | 1.4% | +54.9% |
| 16 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.4M | $4.3M | 0.0% | 1.4% | +245.1% |
| 17 | Woodline Partners LP | 1.4M | $4.3M | 0.0% | 1.3% | 0.0% |
| 18 | MILLENNIUM MANAGEMENT LLC | 1.3M | $4.1M | 0.0% | 1.3% | -63.2% |
| 19 | DIMENSIONAL FUND ADVISORS LP | 961,083 | $2.9M | 0.0% | 0.9% | +20.4% |
| 20 | FMR LLC | 937,368 | $2.9M | 0.0% | 0.9% | +1374.5% |
| 21 | SPHERA FUNDS MANAGEMENT LTD.NEW | 926,004 | $2.8M | 0.4% | 0.9% | new |
| 22 | Nuveen, LLC | 895,304 | $2.7M | 0.0% | 0.9% | +32.7% |
| 23 | Alyeska Investment Group, L.P. | 617,211 | $1.9M | 0.0% | 0.6% | 0.0% |
| 24 | NORTHERN TRUST CORP | 550,266 | $1.7M | 0.0% | 0.5% | +46.2% |
| 25 | VANGUARD FIDUCIARY TRUST CO | 448,168 | $1.4M | 0.0% | 0.4% | +54.7% |
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.