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 (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Defilade Capital Management, L.P., Millennium Management Llc, Aqr Capital Management Llc, Rtw Investments, Lp, and Citadel Advisors Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | Buy | +6,075 | +45.2% | 19,520 | $59.54K | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Buy | +937,693 | +180.6% | 1,456,825 | $4.44M | Q2 2026 | Sep 02, 2026 |
| Corient Private Wealth Llc | Buy | +22,675 | — | 22,675 | $69.16K | Q2 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Sell | -1,970 | -74.9% | 661 | $2.02K | Q2 2026 | Aug 24, 2026 |
| Mercer Global Advisors Inc | Buy | +51,850 | +303.5% | 68,934 | $210.25K | Q2 2026 | Aug 19, 2026 |
| Seven Fleet Capital Management Lp | Sell | -25,664 | -10.0% | 230,921 | $704.31K | Q2 2026 | Aug 17, 2026 |
| Defilade Capital Management, L.P. | Buy | +3,670,135 | — | 3,670,135 | $11.19M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Sell | -2,292,241 | -63.2% | 1,333,037 | $4.07M | Q2 2026 | Aug 14, 2026 |
| Aqr Capital Management Llc | Buy | +1,553,897 | +190.1% | 2,371,414 | $7.23M | Q2 2026 | Aug 14, 2026 |
| Rtw Investments, Lp | Buy | +1,065,999 | +71.1% | 2,565,999 | $7.83M | Q2 2026 | Aug 14, 2026 |
| Sphera Funds Management Ltd. | Buy | +926,004 | — | 926,004 | $2.82M | Q2 2026 | Aug 14, 2026 |
| Point72 Asset Management, L.P. | Sell | -912,579 | -87.1% | 134,806 | $411.16K | Q2 2026 | Aug 14, 2026 |
| Qube Research & Technologies Ltd | Buy | +793,398 | +93.6% | 1,641,042 | $5.01M | Q2 2026 | Aug 14, 2026 |
| Jane Street Group, Llc | Sell | -480,271 | -86.7% | 73,736 | $224.90K | Q2 2026 | Aug 14, 2026 |
| Caption Management, Llc | Sell | -442,006 | -69.6% | 193,018 | $588.71K | Q2 2026 | Aug 14, 2026 |
| Hudson Bay Capital Management Lp | Sell | -281,250 | -96.2% | 11,000 | $33.55K | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Sell | -239,479 | -50.4% | 236,133 | $720.21K | Q2 2026 | Aug 14, 2026 |
| Driehaus Capital Management Llc | Buy | +229,024 | +7.8% | 3,163,423 | $9.65M | Q2 2026 | Aug 14, 2026 |
| Adar1 Capital Management, Llc | Buy | +220,000 | +417.1% | 272,745 | $831.87K | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +191,325 | +12.3% | 1,752,910 | $5.35M | Q2 2026 | Aug 14, 2026 |
| Susquehanna Portfolio Strategies, Llc | Buy | +165,156 | — | 165,156 | $503.73K | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +134,483 | — | 134,483 | $410.17K | Q2 2026 | Aug 14, 2026 |
| Squarepoint Ops Llc | Buy | +113,474 | — | 113,474 | $346.10K | Q2 2026 | Aug 14, 2026 |
| Man Group Plc | Buy | +113,049 | — | 113,049 | $344.80K | Q2 2026 | Aug 14, 2026 |
| State Of Wisconsin Investment Board | Buy | +109,400 | +379.9% | 138,196 | $421.50K | Q2 2026 | Aug 14, 2026 |
| Exoduspoint Capital Management, Lp | Buy | +63,968 | +241.9% | 90,413 | $275.76K | Q2 2026 | Aug 14, 2026 |
| Charles Schwab Investment Management Inc | Buy | +61,627 | +42.4% | 206,969 | $631.25K | Q2 2026 | Aug 14, 2026 |
| Wells Fargo & Company/Mn | Buy | +41,875 | +207.0% | 62,103 | $189.41K | Q2 2026 | Aug 14, 2026 |
| Alliancebernstein L.P. | Buy | +33,690 | +45.2% | 108,220 | $486.99K | Q2 2026 | Aug 14, 2026 |
| Summittx Capital, L.P. | Sell | -27,481 | -7.2% | 352,284 | $1.07M | Q2 2026 | Aug 14, 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.
Related LRMR Institutional Insights
- LRMR Overview
- LRMR 13F Institutional Holders
- LRMR Top Institutional Shareholders
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- LRMR Insider Trading & SEC Form 4 Activity
- LRMR Articles
- Top Institutional Investor Stock Rankings