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.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Manufacturers Life Insurance Company, TheBuy+6,075+45.2%19,520$59.54KQ2 2026Sep 09, 2026
Citadel Advisors LlcBuy+937,693+180.6%1,456,825$4.44MQ2 2026Sep 02, 2026
Corient Private Wealth LlcBuy+22,67522,675$69.16KQ2 2026Aug 27, 2026
California State Teachers Retirement SystemSell-1,970-74.9%661$2.02KQ2 2026Aug 24, 2026
Mercer Global Advisors IncBuy+51,850+303.5%68,934$210.25KQ2 2026Aug 19, 2026
Seven Fleet Capital Management LpSell-25,664-10.0%230,921$704.31KQ2 2026Aug 17, 2026
Defilade Capital Management, L.P.Buy+3,670,1353,670,135$11.19MQ2 2026Aug 14, 2026
Millennium Management LlcSell-2,292,241-63.2%1,333,037$4.07MQ2 2026Aug 14, 2026
Aqr Capital Management LlcBuy+1,553,897+190.1%2,371,414$7.23MQ2 2026Aug 14, 2026
Rtw Investments, LpBuy+1,065,999+71.1%2,565,999$7.83MQ2 2026Aug 14, 2026
Sphera Funds Management Ltd.Buy+926,004926,004$2.82MQ2 2026Aug 14, 2026
Point72 Asset Management, L.P.Sell-912,579-87.1%134,806$411.16KQ2 2026Aug 14, 2026
Qube Research & Technologies LtdBuy+793,398+93.6%1,641,042$5.01MQ2 2026Aug 14, 2026
Jane Street Group, LlcSell-480,271-86.7%73,736$224.90KQ2 2026Aug 14, 2026
Caption Management, LlcSell-442,006-69.6%193,018$588.71KQ2 2026Aug 14, 2026
Hudson Bay Capital Management LpSell-281,250-96.2%11,000$33.55KQ2 2026Aug 14, 2026
Two Sigma Investments, LpSell-239,479-50.4%236,133$720.21KQ2 2026Aug 14, 2026
Driehaus Capital Management LlcBuy+229,024+7.8%3,163,423$9.65MQ2 2026Aug 14, 2026
Adar1 Capital Management, LlcBuy+220,000+417.1%272,745$831.87KQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+191,325+12.3%1,752,910$5.35MQ2 2026Aug 14, 2026
Susquehanna Portfolio Strategies, LlcBuy+165,156165,156$503.73KQ2 2026Aug 14, 2026
Invesco Ltd.Buy+134,483134,483$410.17KQ2 2026Aug 14, 2026
Squarepoint Ops LlcBuy+113,474113,474$346.10KQ2 2026Aug 14, 2026
Man Group PlcBuy+113,049113,049$344.80KQ2 2026Aug 14, 2026
State Of Wisconsin Investment BoardBuy+109,400+379.9%138,196$421.50KQ2 2026Aug 14, 2026
Exoduspoint Capital Management, LpBuy+63,968+241.9%90,413$275.76KQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+61,627+42.4%206,969$631.25KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+41,875+207.0%62,103$189.41KQ2 2026Aug 14, 2026
Alliancebernstein L.P.Buy+33,690+45.2%108,220$486.99KQ2 2026Aug 14, 2026
Summittx Capital, L.P.Sell-27,481-7.2%352,284$1.07MQ2 2026Aug 14, 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.