LARIMAR THERAPEUTICS INC (LRMR)
Institutional ownership reported to the SEC as of Q2 2026, across 26 quarters.
Institutions report 95,448,874 shares against 103,882,937 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| DEERFIELD MANAGEMENT COMPANY, L.P. | $108.6M | 35,606,974 | 1.13% | 25q | HELD |
| Blue Owl Capital Holdings LP | $28.1M incl. $145.7K options CALL | 9,163,157 | 4.23% | 11q | +13.2%+$3.3M |
| BlackRock, Inc. | $17.3M | 5,678,035 | 0.00% | 8q | +51.3%+$5.9M |
| Defilade Capital Management, L.P. | $11.2M | 3,670,135 | 1.50% | new | NEW |
| Driehaus Capital Management LLC | $9.6M | 3,163,423 | 0.06% | 10q | +7.8%+$698.5K |
| VANGUARD CAPITAL MANAGEMENT LLC | $9.1M | 2,974,901 | 0.00% | 2q | +3.8%+$331.1K |
| RTW INVESTMENTS, LP | $7.8M | 2,565,999 | 0.07% | 4q | +71.1%+$3.3M |
| AQR CAPITAL MANAGEMENT LLC | $7.2M | 2,371,414 | 0.00% | 6q | +190.1%+$4.7M |
| MARSHALL WACE, LLP | $6.1M | 2,012,458 | 0.00% | 2q | +115.6%+$3.3M |
| DAFNA Capital Management LLC | $6.1M | 2,008,164 | 1.17% | 25q | -1.0%-$64.0K |
| GOLDMAN SACHS GROUP INC | $5.6M incl. $274.5K options CALL | 1,752,910 | 0.00% | 16q | +12.3%+$613.5K |
| CITADEL ADVISORS LLC | $5.2M incl. $793.3K options CALL+PUT | 1,456,825 | 0.00% | 18q | +180.6%+$3.4M |
| GEODE CAPITAL MANAGEMENT, LLC | $5.1M | 1,679,003 | 0.00% | 25q | +51.4%+$1.7M |
| Qube Research & Technologies Ltd | $5.0M | 1,641,042 | 0.00% | 2q | +93.6%+$2.4M |
| STATE STREET CORP | $4.3M | 1,411,804 | 0.00% | 21q | +54.9%+$1.5M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $4.3M | 1,403,172 | 0.00% | 2q | +245.1%+$3.0M |
| Woodline Partners LP | $4.3M | 1,400,850 | 0.01% | 16q | HELD |
| MILLENNIUM MANAGEMENT LLC | $4.1M | 1,333,037 | 0.00% | 10q | -63.2%-$7.0M |
| DIMENSIONAL FUND ADVISORS LP | $2.9M | 961,083 | 0.00% | 20q | +20.4%+$496.2K |
| FMR LLC | $2.9M | 937,368 | 0.00% | 13q | +1374.5%+$2.7M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $2.8M incl. $2.4M options CALL+PUT | 144,428 | 0.00% | 14q | +3.1%+$86.0K |
| SPHERA FUNDS MANAGEMENT LTD. | $2.8M | 926,004 | 0.37% | new | NEW |
| Nuveen, LLC | $2.7M | 895,304 | 0.00% | 6q | +32.7%+$672.2K |
| Alyeska Investment Group, L.P. | $1.9M | 617,211 | 0.00% | 10q | HELD |
| NORTHERN TRUST CORP | $1.7M | 550,266 | 0.00% | 24q | +46.2%+$530.0K |
| VANGUARD FIDUCIARY TRUST CO | $1.4M | 448,168 | 0.00% | 2q | +54.7%+$483.5K |
| Fi3 FINANCIAL ADVISORS, LLC | $1.3M | 2,915? | 0.30% | 22q | |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $1.2M | 399,542 | 0.00% | 2q | +2117.0%+$1.2M |
| Hennion & Walsh Asset Management, Inc. | $1.2M | 396,726 | 0.03% | new | NEW |
| SummitTX Capital, L.P. | $1.1M | 352,284 | 0.03% | 2q | -7.2%-$83.8K |
| JPMORGAN CHASE & CO | $1.0M | 328,015 | 0.00% | 21q | -1.1%-$12.2K |
| Gem Investment Advisors, LLC | $974.5K | 319,519 | 0.60% | 3q | -62.6%-$1.6M |
| SIMPLEX TRADING, LLC | $939.1K incl. $760.4K options CALL+PUT | 58,608 | 0.00% | 10q | HELD |
| Burkehill Global Management, LP | $915.0K | 300,000 | 0.03% | 2q | HELD |
| RENAISSANCE TECHNOLOGIES LLC | $907.2K | 297,443 | 0.00% | 25q | -59.8%-$1.3M |
| ADAR1 Capital Management, LLC | $831.9K | 272,745 | 0.04% | 5q | +417.1%+$671.0K |
| Cerity Partners LLC | $828.3K | 271,582 | 0.00% | 5q | +9.5%+$72.2K |
| TWO SIGMA INVESTMENTS, LP | $720.2K | 236,133 | 0.00% | 20q | -50.4%-$730.4K |
| Seven Fleet Capital Management LP | $704.3K | 230,921 | 0.12% | 2q | -10.0%-$78.3K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $631.3K | 206,969 | 0.00% | 15q | +42.4%+$188.0K |
| IEQ CAPITAL, LLC | $620.3K | 203,363 | 0.00% | 6q | +78.3%+$272.4K |
| Caption Management, LLC | $588.7K | 193,018 | 0.00% | 5q | -69.6%-$1.3M |
| Soleus Capital Management, L.P. | $573.7K | 188,102 | 0.02% | 2q | -82.4%-$2.7M |
| JACOBS LEVY EQUITY MANAGEMENT, INC | $520.3K | 170,575 | 0.00% | 2q | +0.8%+$4.4K |
| Susquehanna Portfolio Strategies, LLC | $503.7K | 165,156 | 0.01% | new | NEW |
| ALLIANCEBERNSTEIN L.P. | $487.0K | 108,220 | 0.00% | 9q | +45.2%+$151.6K |
| DIADEMA PARTNERS LP | $447.2K | 146,637 | 0.06% | 2q | -12.0%-$61.0K |
| UBS Group AG | $440.2K | 144,326 | 0.00% | 19q | +386.0%+$349.6K |
| Bank of New York Mellon Corp | $423.4K | 138,831 | 0.00% | 22q | +29.3%+$96.1K |
| STATE OF WISCONSIN INVESTMENT BOARD | $421.5K | 138,196 | 0.00% | 2q | +379.9%+$333.7K |
| Jump Financial, LLC | $413.6K | 135,601 | 0.00% | 3q | -54.8%-$500.5K |
| Point72 Asset Management, L.P. | $411.2K | 134,806 | 0.00% | 4q | -87.1%-$2.8M |
| Invesco Ltd. | $410.2K | 134,483 | 0.00% | 11q | +584.5%+$350.2K |
| PRUDENTIAL FINANCIAL INC | $391.7K | 128,423 | 0.00% | 2q | +291.6%+$291.7K |
| Creative Planning | $356.2K | 116,801 | 0.00% | 4q | +79.6%+$157.9K |
| Mariner, LLC | $349.1K | 114,445 | 0.00% | 2q | +261.7%+$252.6K |
| Squarepoint Ops LLC | $346.1K | 113,474 | 0.00% | new | NEW |
| Man Group plc | $344.8K | 113,049 | 0.00% | new | NEW |
| JANE STREET GROUP, LLC | $310.9K incl. $86.0K options PUT | 73,736 | 0.00% | 5q | -86.7%-$2.0M |
| DEUTSCHE BANK AG\ | $294.1K | 96,423 | 0.00% | 11q | +3.5%+$10.0K |
| FEDERATED HERMES, INC. | $277.1K | 90,850 | 0.00% | 5q | +48.1%+$90.0K |
| ExodusPoint Capital Management, LP | $275.8K | 90,413 | 0.00% | 4q | +241.9%+$195.1K |
| GROUP ONE TRADING LLC | $273.3K incl. $262.3K options CALL+PUT | 3,596 | 0.00% | 10q | HELD |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $272.6K | 63,680 | 0.00% | 5q | +94.2%+$132.2K |
| MORGAN STANLEY | $264.9K | 86,858 | 0.00% | 25q | -79.4%-$1.0M |
| CARY STREET PARTNERS FINANCIAL LLC | $259.2K | 85,000 | 0.01% | new | NEW |
| RHUMBLINE ADVISERS | $219.2K | 71,888 | 0.00% | 13q | +14.7%+$28.1K |
| MERCER GLOBAL ADVISORS INC /ADV | $210.2K | 68,934 | 0.00% | 2q | +303.5%+$158.1K |
| Quantbot Technologies LP | $209.8K | 68,771 | 0.01% | 2q | +20676.7%+$208.7K |
| WELLS FARGO & COMPANY/MN | $189.4K | 62,103 | 0.00% | 15q | +207.0%+$127.7K |
| Connor, Clark & Lunn Investment Management Ltd. | $182.4K | 59,788 | 0.00% | 3q | -13.5%-$28.4K |
| CANADA PENSION PLAN INVESTMENT BOARD | $182.1K | 59,700 | 0.00% | 3q | HELD |
| ACADIAN ASSET MANAGEMENT LLC | $173.0K | 57,443 | 0.00% | 3q | -3.4%-$6.1K |
| XTX Topco Ltd | $168.4K | 55,209 | 0.00% | 5q | +78.8%+$74.2K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $167.0K | 54,629 | 0.00% | 9q | +57.1%+$60.7K |
| CIBC WORLD MARKET INC. | $161.7K | 53,000 | 0.00% | 2q | HELD |
| WINTON GROUP Ltd | $159.8K | 52,400 | 0.01% | new | NEW |
| GSA CAPITAL PARTNERS LLP | $153.0K | 50,078 | 0.01% | new | NEW |
| BANK OF AMERICA CORP /DE/ | $145.2K | 47,603 | 0.00% | 15q | +0.5% |
| Pale Fire Capital SE | $131.2K | 43,000 | 0.01% | new | NEW |
| Next Level Private LLC | $127.2K | 41,700 | 0.02% | 5q | HELD |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $125.7K | 41,216 | 0.00% | 6q | HELD |
| MetLife Investment Management, LLC | $121.4K | 39,798 | 0.00% | 5q | +49.2%+$40.0K |
| HighTower Advisors, LLC | $115.0K | 37,698 | 0.00% | 2q | -2.0%-$2.3K |
| Persistent Asset Partners Ltd | $114.0K | 37,374 | 0.03% | 2q | -11.3%-$14.5K |
| CITIGROUP INC | $108.7K | 35,636 | 0.00% | 14q | -1.3%-$1.4K |
| Velan Capital Investment Management LP | $100.7K | 33,000 | 0.06% | 7q | HELD |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $93.5K | 30,652 | 0.00% | 9q | +32.7%+$23.1K |
| Russell Investments Group, Ltd. | $83.5K | 27,364 | 0.00% | 6q | +662.4%+$72.5K |
| STRS OHIO | $80.8K | 26,500 | 0.00% | 13q | +22.1%+$14.6K |
| AMERICAN CENTURY COMPANIES INC | $80.7K | 26,467 | 0.00% | 12q | -65.9%-$156.1K |
| BARCLAYS PLC | $79.2K | 25,957 | 0.00% | 14q | +58.5%+$29.2K |
| CAPTRUST FINANCIAL ADVISORS | $76.9K | 25,211 | 0.00% | new | NEW |
| COMMONWEALTH EQUITY SERVICES, LLC | $70.3K | 23,067 | 0.00% | 3q | -6.9%-$5.2K |
| Corient Private Wealth LP | $69.2K | 22,675 | 0.00% | new | NEW |
| Engineers Gate Manager LP | $68.8K | 22,557 | 0.00% | new | NEW |
| Vanguard Global Advisers, LLC | $64.2K | 21,047 | 0.00% | 2q | -58.8%-$91.5K |
| Walleye Trading LLC | $61.0K | 20,000 | 0.00% | 7q | HELD |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $59.5K | 19,520 | 0.00% | 9q | +45.2%+$18.5K |
| Brevan Howard Capital Management LP | $59.5K | 19,504 | 0.00% | new | NEW |
Showing the largest 100 of 163 reported holders. The count of 162 above leaves out 1 position whose reported value failed our price check; it is listed here as filed.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-09-29 | 2026-09-29 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-06 | Hamilton Thomas Edward | Director | Bought | 50,000 | $166.9K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 26 | $2.4M | 764,680 | 2 | 8 | 9 | 0.0% |
| Q2 2026 | 162 | $296.1M | 95,448,874 | 31 | 68 | 42 | 1.6% |
| Q1 2026 | 164 | $401.9M | 88,732,746 | 41 | 58 | 40 | 1.8% |
| Q4 2025 | 137 | $277.8M | 72,706,086 | 21 | 44 | 43 | 0.3% |
| Q3 2025 | 140 | $299.7M | 85,523,349 | 32 | 58 | 26 | 8.3% |
| Q2 2025 | 117 | $194.9M | 62,410,423 | 32 | 40 | 22 | 7.4% |
| Q1 2025 | 102 | $132.3M | 60,839,245 | 14 | 31 | 31 | 0.3% |
| Q4 2024 | 118 | $248.0M | 63,434,614 | 16 | 41 | 31 | 1.0% |
| Q3 2024 | 122 | $425.1M | 64,350,841 | 25 | 36 | 34 | 0.9% |
| Q2 2024 | 107 | $477.3M | 65,348,899 | 21 | 37 | 33 | 0.8% |
| Q1 2024 | 105 | $496.5M | 63,827,797 | 46 | 34 | 21 | 2.4% |
| Q4 2023 | 70 | $180.5M | 39,573,225 | 7 | 23 | 23 | 0.3% |
| Q3 2023 | 66 | $153.2M | 38,745,794 | 7 | 16 | 25 | 0.1% |
| Q2 2023 | 66 | $120.2M | 39,027,692 | 17 | 25 | 13 | 0.0% |
| Q1 2023 | 68 | $174.2M | 38,462,442 | 23 | 23 | 13 | 0.0% |
| Q4 2022 | 47 | $160.1M | 38,766,976 | 8 | 17 | 11 | 0.0% |
| Q3 2022 | 54 | $131.0M | 40,907,172 | 20 | 16 | 6 | 0.0% |
| Q2 2022 | 36 | $28.2M | 14,392,305 | 0 | 4 | 11 | 0.1% |
| Q1 2022 | 43 | $62.1M | 15,257,489 | 4 | 13 | 10 | 0.5% |
| Q4 2021 | 47 | $158.2M | 14,666,641 | 4 | 11 | 11 | 0.0% |
| Q3 2021 | 52 | $1.3B | 108,441,478 | 12 | 14 | 9 | 0.0% |
| Q2 2021 | 45 | $142.8M | 14,544,121 | 12 | 15 | 8 | 0.0% |
| Q1 2021 | 54 | $206.1M | 14,110,495 | 15 | 10 | 14 | 0.0% |
| Q4 2020 | 42 | $305.1M | 14,252,337 | 8 | 11 | 8 | 0.0% |
| Q3 2020 | 37 | $206.7M | 13,625,016 | 7 | 10 | 6 | 0.0% |
| Q2 2020 | 36 | $166.2M | 12,953,206 | 37 | 0 | 0 | 0.0% |
