LARIMAR THERAPEUTICS INC (LRMR) Institutional Ownership Changes & 13F Activity
LARIMAR THERAPEUTICS INC (LRMR). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Deerfield Management Company, L.P., Driehaus Capital Management Llc, Rtw Investments, Lp, Millennium Management Llc, and Deep Track Capital, Lp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Mirae Asset Global Investments Co., Ltd. | Buy | +1,505 | +36.2% | 5,664 | $25.49K | Q1 2026 | Aug 12, 2026 |
| Wells Fargo & Company/Mn | Sell | -36,669 | -64.4% | 20,228 | $91.03K | Q1 2026 | Jul 08, 2026 |
| Adar1 Capital Management, Llc | Sell | -132,944 | -71.6% | 52,745 | $237.35K | Q1 2026 | May 18, 2026 |
| Bank Of America Corp | Buy | +6,886 | +17.0% | 47,359 | $213.12K | Q1 2026 | May 18, 2026 |
| California State Teachers Retirement System | Sell | -361 | -12.1% | 2,631 | $11.84K | Q1 2026 | May 18, 2026 |
| Deerfield Management Company, L.P. | Buy | +5,000,000 | +16.3% | 35,606,974 | $160.23M | Q1 2026 | May 15, 2026 |
| Driehaus Capital Management Llc | Buy | +2,398,935 | +448.0% | 2,934,399 | $13.20M | Q1 2026 | May 15, 2026 |
| Rtw Investments, Lp | Sell | -1,625,000 | -52.0% | 1,500,000 | $6.75M | Q1 2026 | May 15, 2026 |
| Millennium Management Llc | Sell | -1,581,086 | -30.4% | 3,625,278 | $16.31M | Q1 2026 | May 15, 2026 |
| Deep Track Capital, Lp | Buy | +1,500,000 | — | 1,500,000 | $6.75M | Q1 2026 | May 15, 2026 |
| Dafna Capital Management Llc | Buy | +1,090,000 | +116.1% | 2,029,164 | $9.13M | Q1 2026 | May 15, 2026 |
| Marshall Wace, Llp | Buy | +933,464 | — | 933,464 | $4.20M | Q1 2026 | May 15, 2026 |
| Qube Research & Technologies Ltd | Buy | +847,644 | — | 847,644 | $3.81M | Q1 2026 | May 15, 2026 |
| Citadel Advisors Llc | Sell | -847,618 | -62.0% | 519,132 | $2.34M | Q1 2026 | May 15, 2026 |
| Woodline Partners Lp | Buy | +600,000 | +74.9% | 1,400,850 | $6.30M | Q1 2026 | May 15, 2026 |
| Gem Investment Advisors, Llc | Buy | +573,370 | +204.1% | 854,230 | $3.84M | Q1 2026 | May 15, 2026 |
| Point72 Asset Management, L.P. | Sell | -413,643 | -28.3% | 1,047,385 | $4.71M | Q1 2026 | May 15, 2026 |
| Summittx Capital, L.P. | Buy | +379,765 | — | 379,765 | $1.71M | Q1 2026 | May 15, 2026 |
| Aqr Capital Management Llc | Buy | +315,266 | +62.8% | 817,517 | $3.68M | Q1 2026 | May 15, 2026 |
| Alyeska Investment Group, L.P. | Sell | -310,610 | -33.5% | 617,211 | $2.78M | Q1 2026 | May 15, 2026 |
| Adage Capital Partners Gp, L.L.C. | Buy | +300,000 | — | 300,000 | $1.35M | Q1 2026 | May 15, 2026 |
| Burkehill Global Management, Lp | Buy | +300,000 | — | 300,000 | $1.35M | Q1 2026 | May 15, 2026 |
| Morgan Stanley | Buy | +284,830 | +209.5% | 420,813 | $1.89M | Q1 2026 | May 15, 2026 |
| Seven Fleet Capital Management Lp | Buy | +256,585 | — | 256,585 | $1.15M | Q1 2026 | May 15, 2026 |
| Caption Management, Llc | Buy | +219,730 | +52.9% | 635,024 | $2.86M | Q1 2026 | May 15, 2026 |
| Goldman Sachs Group Inc | Buy | +214,370 | +15.9% | 1,561,585 | $7.03M | Q1 2026 | May 15, 2026 |
| Two Sigma Investments, Lp | Buy | +180,429 | +61.1% | 475,612 | $2.14M | Q1 2026 | May 15, 2026 |
| Jacobs Levy Equity Management, Inc | Buy | +169,144 | — | 169,144 | $761.15K | Q1 2026 | May 15, 2026 |
| Diadema Partners Lp | Buy | +166,637 | — | 166,637 | $749.87K | Q1 2026 | May 15, 2026 |
| D. E. Shaw & Co., Inc. | Buy | +138,225 | +31.6% | 575,624 | $2.59M | Q1 2026 | May 15, 2026 |
Frequently asked questions about LRMR activity
Which institutional owners are buying LRMR?
Institutional owners buying LRMR include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in LRMR activity?
"Buy" means an investor increased their reported position in LRMR compared to the prior reporting period. This reflects growing exposure to LARIMAR THERAPEUTICS INC (LRMR) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in LRMR increasing?
Institutional interest in LRMR can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
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