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.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Mirae Asset Global Investments Co., Ltd.Buy+1,505+36.2%5,664$25.49KQ1 2026Aug 12, 2026
Wells Fargo & Company/MnSell-36,669-64.4%20,228$91.03KQ1 2026Jul 08, 2026
Adar1 Capital Management, LlcSell-132,944-71.6%52,745$237.35KQ1 2026May 18, 2026
Bank Of America CorpBuy+6,886+17.0%47,359$213.12KQ1 2026May 18, 2026
California State Teachers Retirement SystemSell-361-12.1%2,631$11.84KQ1 2026May 18, 2026
Deerfield Management Company, L.P.Buy+5,000,000+16.3%35,606,974$160.23MQ1 2026May 15, 2026
Driehaus Capital Management LlcBuy+2,398,935+448.0%2,934,399$13.20MQ1 2026May 15, 2026
Rtw Investments, LpSell-1,625,000-52.0%1,500,000$6.75MQ1 2026May 15, 2026
Millennium Management LlcSell-1,581,086-30.4%3,625,278$16.31MQ1 2026May 15, 2026
Deep Track Capital, LpBuy+1,500,000—1,500,000$6.75MQ1 2026May 15, 2026
Dafna Capital Management LlcBuy+1,090,000+116.1%2,029,164$9.13MQ1 2026May 15, 2026
Marshall Wace, LlpBuy+933,464—933,464$4.20MQ1 2026May 15, 2026
Qube Research & Technologies LtdBuy+847,644—847,644$3.81MQ1 2026May 15, 2026
Citadel Advisors LlcSell-847,618-62.0%519,132$2.34MQ1 2026May 15, 2026
Woodline Partners LpBuy+600,000+74.9%1,400,850$6.30MQ1 2026May 15, 2026
Gem Investment Advisors, LlcBuy+573,370+204.1%854,230$3.84MQ1 2026May 15, 2026
Point72 Asset Management, L.P.Sell-413,643-28.3%1,047,385$4.71MQ1 2026May 15, 2026
Summittx Capital, L.P.Buy+379,765—379,765$1.71MQ1 2026May 15, 2026
Aqr Capital Management LlcBuy+315,266+62.8%817,517$3.68MQ1 2026May 15, 2026
Alyeska Investment Group, L.P.Sell-310,610-33.5%617,211$2.78MQ1 2026May 15, 2026
Adage Capital Partners Gp, L.L.C.Buy+300,000—300,000$1.35MQ1 2026May 15, 2026
Burkehill Global Management, LpBuy+300,000—300,000$1.35MQ1 2026May 15, 2026
Morgan StanleyBuy+284,830+209.5%420,813$1.89MQ1 2026May 15, 2026
Seven Fleet Capital Management LpBuy+256,585—256,585$1.15MQ1 2026May 15, 2026
Caption Management, LlcBuy+219,730+52.9%635,024$2.86MQ1 2026May 15, 2026
Goldman Sachs Group IncBuy+214,370+15.9%1,561,585$7.03MQ1 2026May 15, 2026
Two Sigma Investments, LpBuy+180,429+61.1%475,612$2.14MQ1 2026May 15, 2026
Jacobs Levy Equity Management, IncBuy+169,144—169,144$761.15KQ1 2026May 15, 2026
Diadema Partners LpBuy+166,637—166,637$749.87KQ1 2026May 15, 2026
D. E. Shaw & Co., Inc.Buy+138,225+31.6%575,624$2.59MQ1 2026May 15, 2026
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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.