LRMR Larimar Therapeutics, Inc.

NASDAQ
$3.79

Larimar Therapeutics, Inc. (LRMR) Institutional Ownership

What the institutions did with LRMR last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
191
filed both this quarter and last
Managers holding
162
+2 on the quarter
Buyers
99
31 opened new
Sellers
70
29 sold out entirely
Buyer share
58.6%
of managers who traded it
Breadth
+17.2
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
DEERFIELD MANAGEMENT COMPANY, L.P. 35.6M 37.3%
Blue Owl Capital Holdings LP 9.2M 9.6%
BlackRock, Inc. 5.7M 5.9%
Defilade Capital Management, L.P. 3.7M 3.8%
Driehaus Capital Management LLC 3.2M 3.3%
VANGUARD CAPITAL MANAGEMENT LLC 3.0M 3.1%
RTW INVESTMENTS, LP 2.6M 2.7%
AQR CAPITAL MANAGEMENT LLC 2.4M 2.5%
MARSHALL WACE, LLP 2.0M 2.1%
DAFNA Capital Management LLC 2.0M 2.1%
GOLDMAN SACHS GROUP INC 1.8M 1.8%
GEODE CAPITAL MANAGEMENT, LLC 1.7M 1.8%
Qube Research & Technologies Ltd 1.6M 1.7%
CITADEL ADVISORS LLC 1.5M 1.5%
STATE STREET CORP 1.4M 1.5%
VANGUARD PORTFOLIO MANAGEMENT LLC 1.4M 1.5%
Woodline Partners LP 1.4M 1.5%
MILLENNIUM MANAGEMENT LLC 1.3M 1.4%
DIMENSIONAL FUND ADVISORS LP 961.1K 1.0%
FMR LLC 937.4K 1.0%
SPHERA FUNDS MANAGEMENT LTD. 926.0K 1.0%
Nuveen, LLC 895.3K 0.9%
Alyeska Investment Group, L.P. 617.2K 0.6%
NORTHERN TRUST CORP 550.3K 0.6%
VANGUARD FIDUCIARY TRUST CO 448.2K 0.5%

Largest changes

Manager Action Previous Current Change
Defilade Capital Management, L.P. New 0 3.7M +3.7M
AIGH Capital Management LLC Sold Out 3.0M 0 -3.0M
MILLENNIUM MANAGEMENT LLC Reduced 3.6M 1.3M -2.3M
Blue Owl Capital Holdings LP Increased 7.1M 9.2M +2.0M
BlackRock, Inc. Increased 3.8M 5.7M +1.9M
AQR CAPITAL MANAGEMENT LLC Increased 817.5K 2.4M +1.6M
Deep Track Capital, LP Sold Out 1.5M 0 -1.5M
MARSHALL WACE, LLP Increased 933.5K 2.0M +1.1M
RTW INVESTMENTS, LP Increased 1.5M 2.6M +1.1M
VANGUARD PORTFOLIO MANAGEMENT LLC Increased 406.6K 1.4M +996.6K
CITADEL ADVISORS LLC Increased 519.1K 1.5M +937.7K
SPHERA FUNDS MANAGEMENT LTD. New 0 926.0K +926.0K
Point72 Asset Management, L.P. Reduced 1.0M 134.8K -912.6K
Soleus Capital Management, L.P. Reduced 1.1M 188.1K -878.9K
FMR LLC Increased 63.6K 937.4K +873.8K
Qube Research & Technologies Ltd Increased 847.6K 1.6M +793.4K
D. E. Shaw & Co., Inc. Sold Out 575.6K 0 -575.6K
GEODE CAPITAL MANAGEMENT, LLC Increased 1.1M 1.7M +570.2K
Gem Investment Advisors, LLC Reduced 854.2K 319.5K -534.7K
STATE STREET CORP Increased 911.3K 1.4M +500.5K
JANE STREET GROUP, LLC Reduced 554.0K 73.7K -480.3K
RENAISSANCE TECHNOLOGIES LLC Reduced 739.9K 297.4K -442.5K
Caption Management, LLC Reduced 635.0K 193.0K -442.0K
Hennion & Walsh Asset Management, Inc. New 0 396.7K +396.7K
LOS ANGELES CAPITAL MANAGEMENT LLC Increased 18.0K 399.5K +381.5K
MORGAN STANLEY Reduced 420.8K 86.9K -334.0K
ADAGE CAPITAL PARTNERS GP, L.L.C. Sold Out 300.0K 0 -300.0K
Hudson Bay Capital Management LP Reduced 292.3K 11.0K -281.3K
TWO SIGMA INVESTMENTS, LP Reduced 475.6K 236.1K -239.5K
Driehaus Capital Management LLC Increased 2.9M 3.2M +229.0K
Nuveen, LLC Increased 674.9K 895.3K +220.4K
ADAR1 Capital Management, LLC Increased 52.7K 272.7K +220.0K
GOLDMAN SACHS GROUP INC Increased 1.6M 1.8M +191.3K
NORTHERN TRUST CORP Increased 376.5K 550.3K +173.8K
Susquehanna Portfolio Strategies, LLC New 0 165.2K +165.2K
Jump Financial, LLC Reduced 299.7K 135.6K -164.1K
DIMENSIONAL FUND ADVISORS LP Increased 798.5K 961.1K +162.6K
VANGUARD FIDUCIARY TRUST CO Increased 289.6K 448.2K +158.5K
WELLINGTON MANAGEMENT GROUP LLP Sold Out 136.5K 0 -136.5K
SEVEN GRAND MANAGERS, LLC Sold Out 125.0K 0 -125.0K
HRT FINANCIAL LP Sold Out 121.9K 0 -121.9K
Invesco Ltd. Increased 19.6K 134.5K +114.8K
UBS Group AG Increased 29.7K 144.3K +114.6K
Squarepoint Ops LLC New 0 113.5K +113.5K
Man Group plc New 0 113.0K +113.0K
STATE OF WISCONSIN INVESTMENT BOARD Increased 28.8K 138.2K +109.4K
VANGUARD CAPITAL MANAGEMENT LLC Increased 2.9M 3.0M +108.6K
PRUDENTIAL FINANCIAL INC Increased 32.8K 128.4K +95.6K
IEQ CAPITAL, LLC Increased 114.0K 203.4K +89.3K
CARY STREET PARTNERS FINANCIAL LLC New 0 85.0K +85.0K
Mariner, LLC Increased 31.6K 114.4K +82.8K
Marex Group plc Sold Out 82.0K 0 -82.0K
Quantbot Technologies LP Increased 331 68.8K +68.4K
ExodusPoint Capital Management, LP Increased 26.4K 90.4K +64.0K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Increased 145.3K 207.0K +61.6K
SIMPLEX TRADING, LLC New 0 58.6K +58.6K
AXQ CAPITAL, LP Sold Out 53.0K 0 -53.0K
WINTON GROUP Ltd New 0 52.4K +52.4K
MERCER GLOBAL ADVISORS INC /ADV Increased 17.1K 68.9K +51.9K
Virtu Financial LLC Sold Out 51.8K 0 -51.8K

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.