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LRMR · Larimar Therapeutics, Inc. · Holdings

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$2.46 +0.22 (+9.82%)
Russell 2000 member Rebalance outlook locked
Going-concern doubt — flagged Aug 4, 2026

Substantial doubt about the company's ability to continue as a going concern.

“While the Company expects its cash, cash equivalents and marketable securities will fund its forecasted operating expenses and capital expenditure requirements into the third quarter of 2027, these cash resources are not sufficient to fund the Company's planned operations for a period of at least one year from the date these unaudited condensed consolidated financial statements are issued. The Company will need to raise additional capital to fund its ongoing operations. The Company continues to evaluate opportunities to further finance its operating cash needs through a combination of some, or all, of the following: equity or debt offerings, royalty financings, collaborations, strategic alliances, and/or marketing, distribution or licensing arrangements. In addition, the Company believes it will be eligible for the FDA's rare pediatric disease priority review voucher which could then be sold if nomlabofusp receives FDA approval. There is no assurance, however, that additional financing will be available when needed or that the Company will be able to obtain financing on terms acceptable to the Company. If the Company is unable to obtain funding when required in the future, the Company could be required to delay, reduce, or eliminate research and development programs, or commercialization efforts, which could adversely affect its business prospects. These conditions raise substantial doubt about the Company's ability to continue as a going concern.”
View the 10-Q filed Aug 4, 2026
Market Cap
$232.70M
Shares
103.88M
Volume · Oct 27 1.2M Avg daily vol (3M) 1.33M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of LRMR: 13F, 13D and 13G, insiders and funds →
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 164
Total Value: $295,243,248
Total Shares: 96,767,371
Showing 1–100 of 170 holdings by value · page 1 of 2

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 163 13F filers
Top Holder
36.9%
Sep 2023 → Jun 2026 · range 31.7% – 43.7%
of institutional value
Top 5
59.3%
Sep 2023 → Jun 2026 · range 55.6% – 70.2%
of institutional value
Top 10
71.6%
Sep 2023 → Jun 2026 · range 71.6% – 83.7%
of institutional value
HHI
1,567
Sep 2023 → Jun 2026 · range 1,296 – 2,152
Moderately concentrated

Who Holds LRMR

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 163 filers, like-for-like change +8.9%; actively managed books +5.6%; index-like books +29.3%.

Holder type Share Filers Change
Registered adviser 69.3% 88 +8.8%
Exempt adviser 5.2% 6 +83.4%
Adviser 10.3% 4 +12.3%
Bank 2.9% 12 +46.3%
Insurer 0.1% 1 +291.6%
Broker-dealer 0.0% 1 new
Benefit plan 0.2% 3 +211.2%
Non-US 0.2% 5 +3.9%
Holding company 8.9% 7 +43.0%
Unknown 3.0% 36 -61.2%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 1 holder with no observed 2026-03-31 13F and 2 holders with no observed 2026-06-30 13F.

Conviction and Crowding

163 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
1
0.613% of filers hold it in their top 10
Mar 31, 2026: 2
Holders above 5%
0
median weight 0.000%
Mar 31, 2026: 1
Crowding
62.5%
of shares outstanding, 99th percentile
Mar 31, 2026: 62.2%
Private-fund advisers
61.9%
of shares outstanding
Institutional ownership
91.9%
143.4% of the estimated free float above 100%: filers can report lent or client shares more than once
Top 10 holders
72.5%
of 13F shares, Herfindahl 0.160
Active holders
+5.6%
like-for-like share change of active filers
5% stakes on record
2
1 13D, 1 13G (1 institutional, 0 passive, 0 exempt)
How long holders have held it value-weighted 14.9 quarters
Under 1 year 18.4% 1 to 3 years 31.2% 3 years or more 50.4% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net sellers of $575,743 (0 buying, 2 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$4.61
estimated per share
Mar 31, 2026: $4.63
Quarter-end price
$3.05
implied by 13F values
Estimated gain or loss
-33.9%
price against the estimated cost
Estimated at a loss
99.6%
of costed 13F value

Estimated cost covers 94.5% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies LRMR's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 EVMN Evommune, Inc. 5
2 CRBP Corbus Pharmaceuticals Holdings, Inc. 5
3 ENTX Entera Bio Ltd. 3
4 CNTX Context Therapeutics Inc. 4
5 NGNE Neurogene Inc. 4
6 SNDX Syndax Pharmaceuticals Inc 7
7 HELP Helus Pharma Inc. 5
8 KLRS Kalaris Therapeutics, Inc. 3
9 RIGL Rigel Pharmaceuticals Inc 3
10 VYGR Voyager Therapeutics, Inc. 3

Shareholder Targets

13F filers that own its peers but not LRMR, quarter ended Jun 30, 2026

Found through its holder-overlap peers: EVMN, CRBP, ENTX, CNTX, NGNE, SNDX, HELP, KLRS, RIGL, VYGR, IDYA, CTMX, PRQR, FHTX, MLYS, GPCR, RARE, NVCT, XNCR, CGEM. 604 filers in all.

# Filer In peers
1 Jupiter Topco LLC Unknown, Diversified active $618,201,317 10 held
2 WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active $489,336,162 10 held
3 BVF INC/IL Unknown, Concentrated $433,071,429 5 held
4 Avoro Capital Advisors LLC Registered adviser, Concentrated $351,836,636 1 held
5 BAKER BROS. ADVISORS LP Registered adviser, Concentrated $342,461,396 6 held
6 RA CAPITAL MANAGEMENT, L.P. Registered adviser, Concentrated $338,909,945 3 held
7 Kynam Capital Management, LP Registered adviser, Concentrated $317,002,253 4 held
8 Deep Track Capital, LP Adviser, Diversified active $268,066,157 3 held
9 SAMSARA BIOCAPITAL, LLC Registered adviser, Concentrated $264,830,091 3 held
10 MPM BIOIMPACT LLC Adviser, Diversified active $254,432,400 4 held

Fund Ownership of LRMR by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 7.67% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 1.71% 1,776,227
Index ETFs 5.96% 6,187,644
Active ETFs 1.34% 1,386,903
Active funds 2.60% 2,698,230
Unclassified 0.18% 191,249
All registered funds 11.78% 12,240,253
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 89 Exempt adviser 6 Adviser 4 Bank 12 Insurer 1 Broker-dealer 1 Benefit plan 3 Non-US 5 Holding company 7 Unknown 36
Showing 100 of 170
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
DEERFIELD MANAGEMENT COMPANY, L.P. $108,601,270 36.78% 35,606,974
Blue Owl Capital Holdings LP $27,947,628 9.47% 9,163,157
BlackRock, Inc. $17,318,002 5.87% 5,678,035
Defilade Capital Management, L.P. $11,193,911 3.79% 3,670,135
Driehaus Capital Management LLC $9,648,440 3.27% 3,163,423
VANGUARD CAPITAL MANAGEMENT LLC $9,073,448 3.07% 2,974,901
RTW INVESTMENTS, LP $7,826,296 2.65% 2,565,999
AQR CAPITAL MANAGEMENT LLC $7,232,810 2.45% 2,371,414
MARSHALL WACE, LLP $6,137,996 2.08% 2,012,458
DAFNA Capital Management LLC $6,124,900 2.07% 2,008,164
GOLDMAN SACHS GROUP INC $5,346,375 1.81% 1,752,910
GEODE CAPITAL MANAGEMENT, LLC $5,120,958 1.73% 1,679,003
Qube Research & Technologies Ltd $5,005,178 1.70% 1,641,042
CITADEL ADVISORS LLC $4,443,316 1.50% 1,456,825
STATE STREET CORP $4,306,002 1.46% 1,411,804
VANGUARD PORTFOLIO MANAGEMENT LLC $4,279,674 1.45% 1,403,172
Woodline Partners LP $4,272,592 1.45% 1,400,850
MILLENNIUM MANAGEMENT LLC $4,065,762 1.38% 1,333,037
DIMENSIONAL FUND ADVISORS LP $2,931,300 0.99% 961,083
FMR LLC $2,858,971 0.97% 937,368
SPHERA FUNDS MANAGEMENT LTD. $2,824,312 0.96% 926,004
Nuveen, LLC $2,730,676 0.92% 895,304
Alyeska Investment Group, L.P. $1,882,493 0.64% 617,211
Hennion & Walsh Asset Management, Inc. $1,822,303 0.62% 570,361
NORTHERN TRUST CORP $1,678,309 0.57% 550,266
SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,580,815 0.54% 518,300
VANGUARD FIDUCIARY TRUST CO $1,366,912 0.46% 448,168
LOS ANGELES CAPITAL MANAGEMENT LLC $1,218,603 0.41% 399,542
SummitTX Capital, L.P. $1,074,466 0.36% 352,284
JPMORGAN CHASE & CO $1,000,444 0.34% 328,015
Gem Investment Advisors, LLC $974,532 0.33% 319,519
Burkehill Global Management, LP $915,000 0.31% 300,000
RENAISSANCE TECHNOLOGIES LLC $907,201 0.31% 297,443
ADAR1 Capital Management, LLC $831,872 0.28% 272,745
Cerity Partners LLC $828,323 0.28% 271,582
SUSQUEHANNA INTERNATIONAL GROUP, LLP $821,975 0.28% 269,500
CITADEL ADVISORS LLC $732,610 0.25% 240,200
TWO SIGMA INVESTMENTS, LP $720,205 0.24% 236,133
Seven Fleet Capital Management LP $704,309 0.24% 230,921
CHARLES SCHWAB INVESTMENT MANAGEMENT INC $631,255 0.21% 206,969
IEQ CAPITAL, LLC $620,257 0.21% 203,363
Caption Management, LLC $588,704 0.20% 193,018
Soleus Capital Management, L.P. $573,711 0.19% 188,102
JACOBS LEVY EQUITY MANAGEMENT, INC $520,253 0.18% 170,575
Susquehanna Portfolio Strategies, LLC $503,725 0.17% 165,156
DIADEMA PARTNERS LP $447,242 0.15% 146,637
SUSQUEHANNA INTERNATIONAL GROUP, LLP $440,505 0.15% 144,428
UBS Group AG $440,194 0.15% 144,326
Bank of New York Mellon Corp $423,433 0.14% 138,831
STATE OF WISCONSIN INVESTMENT BOARD $421,497 0.14% 138,196
Jump Financial, LLC $413,583 0.14% 135,601
Point72 Asset Management, L.P. $411,158 0.14% 134,806
Invesco Ltd. $410,172 0.14% 134,483
PRUDENTIAL FINANCIAL INC $391,690 0.13% 128,423
Creative Planning $356,242 0.12% 116,801
Mariner, LLC $349,057 0.12% 114,445
Squarepoint Ops LLC $346,095 0.12% 113,474
Man Group plc $344,799 0.12% 113,049
ALLIANCEBERNSTEIN L.P. $330,071 0.11% 108,220
DEUTSCHE BANK AG\ $294,090 0.10% 96,423
FEDERATED HERMES, INC. $277,092 0.09% 90,850
ExodusPoint Capital Management, LP $275,759 0.09% 90,413
GOLDMAN SACHS GROUP INC $274,500 0.09% 90,000
MORGAN STANLEY $264,914 0.09% 86,858
CARY STREET PARTNERS FINANCIAL LLC $259,250 0.09% 85,000
JANE STREET GROUP, LLC $224,894 0.08% 73,736
RHUMBLINE ADVISERS $219,258 0.07% 71,888
MERCER GLOBAL ADVISORS INC /ADV $210,248 0.07% 68,934
Quantbot Technologies LP $209,751 0.07% 68,771
WELLS FARGO & COMPANY/MN $189,414 0.06% 62,103
Connor, Clark & Lunn Investment Management Ltd. $182,353 0.06% 59,788
CANADA PENSION PLAN INVESTMENT BOARD $182,085 0.06% 59,700
SIMPLEX TRADING, LLC $178,754 0.06% 58,608
ACADIAN ASSET MANAGEMENT LLC $175,201 0.06% 57,443
XTX Topco Ltd $168,387 0.06% 55,209
PRICE T ROWE ASSOCIATES INC /MD/ $166,618 0.06% 54,629
CIBC WORLD MARKET INC. $161,650 0.05% 53,000
WINTON GROUP Ltd $159,820 0.05% 52,400
GSA CAPITAL PARTNERS LLP $152,737 0.05% 50,078
BANK OF AMERICA CORP /DE/ $145,189 0.05% 47,603
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $134,106 0.05% 41,974
Next Level Private LLC $133,231 0.05% 41,700
Pale Fire Capital SE $131,150 0.04% 43,000
BRIDGEWAY CAPITAL MANAGEMENT, LLC $125,708 0.04% 41,216
MetLife Investment Management, LLC $121,383 0.04% 39,798
HighTower Advisors, LLC $114,978 0.04% 37,698
Persistent Asset Partners Ltd $113,990 0.04% 37,374
CITIGROUP INC $108,689 0.04% 35,636
Velan Capital Investment Management LP $100,650 0.03% 33,000
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. $93,488 0.03% 30,652
JANE STREET GROUP, LLC $86,010 0.03% 28,200
Russell Investments Group, Ltd. $83,459 0.03% 27,364
STRS OHIO $80,825 0.03% 26,500
AMERICAN CENTURY COMPANIES INC $80,724 0.03% 26,467
BARCLAYS PLC $79,168 0.03% 25,957
CAPTRUST FINANCIAL ADVISORS $76,893 0.03% 25,211
COMMONWEALTH EQUITY SERVICES, LLC $70,354 0.02% 23,067
Corient Private Wealth LLC $69,158 0.02% 22,675
Engineers Gate Manager LP $68,798 0.02% 22,557
Vanguard Global Advisers, LLC $64,193 0.02% 21,047

Showing the top 100 of 170 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1374690 CUSIP 517125100 13F (30d) 20 filings 20 filers Visit website Investor relations