BALA CYNWYD, PA
LARIMAR THERAPEUTICS, INC.LRMR— Latest position per institution from SEC 13F filings
15
Institutional holders
96.70M
Total shares held
410.82M
Estimated value
4.84M
Avg. position size
DEERFIELD MANAGEMENT COMPANY, L.P.
CIK 1009258
Shares
35.61M
Value
160.23M
Filed
Mar 31, 2026
BLUE OWL CAPITAL HOLDINGS LP
CIK 1858703
Shares
7.12M
Value
32.04M
Filed
Mar 31, 2026
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
Shares
6.05M
Value
19.53M
Filed
Sep 30, 2025
JANUS HENDERSON GROUP PLC
CIK 1274173
Shares
5.57M
Value
13.07M
Filed
Mar 31, 2025
BLACKROCK, INC.
CIK 2012383
Shares
3.75M
Value
16.88M
Filed
Mar 31, 2026
OPALEYE MANAGEMENT INC.
CIK 1595855
Shares
3.72M
Value
10.56M
Filed
Sep 30, 2025
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
3.63M
Value
16.31M
Filed
Mar 31, 2026
CHI ADVISORS LLC
CIK 1791468
Shares
3.41M
Value
13.49M
Filed
Sep 30, 2023
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
3.13M
Value
22.72M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
3.05M
Value
11.61M
Filed
Dec 31, 2025
AIGH CAPITAL MANAGEMENT LLC
CIK 1835943
Shares
3M
Value
13.50M
Filed
Mar 31, 2026
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 938206
Shares
2.93M
Value
13.20M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.87M
Value
12.90M
Filed
Mar 31, 2026
LOGOS GLOBAL MANAGEMENT LP
CIK 1792126
Shares
2.50M
Value
8.07M
Filed
Sep 30, 2025
PERCEPTIVE ADVISORS LLC
CIK 1224962
Shares
2.28M
Value
10.33M
Filed
Mar 31, 2023
DAFNA CAPITAL MANAGEMENT LLC
CIK 1389933
Shares
2.03M
Value
9.13M
Filed
Mar 31, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
1.65M
Value
7.43M
Filed
Mar 31, 2026
RTW INVESTMENTS, LP
CIK 1493215
Shares
1.50M
Value
6.75M
Filed
Mar 31, 2026
DEEP TRACK CAPITAL, LP
CIK 1856083
Shares
1.50M
Value
6.75M
Filed
Mar 31, 2026
WOODLINE PARTNERS LP
CIK 1784547
Shares
1.40M
Value
6.30M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | DEERFIELD MANAGEMENT COMPANY, L.P. | 1009258 | 35.61M | 160.23M | Mar 31, 2026 |
| 2 | BLUE OWL CAPITAL HOLDINGS LP | 1858703 | 7.12M | 32.04M | Mar 31, 2026 |
| 3 | RA CAPITAL MANAGEMENT, L.P. | 1346824 | 6.05M | 19.53M | Sep 30, 2025 |
| 4 | JANUS HENDERSON GROUP PLC | 1274173 | 5.57M | 13.07M | Mar 31, 2025 |
| 5 | BLACKROCK, INC. | 2012383 | 3.75M | 16.88M | Mar 31, 2026 |
| 6 | OPALEYE MANAGEMENT INC. | 1595855 | 3.72M | 10.56M | Sep 30, 2025 |
| 7 | MILLENNIUM MANAGEMENT LLC | 1273087 | 3.63M | 16.31M | Mar 31, 2026 |
| 8 | CHI ADVISORS LLC | 1791468 | 3.41M | 13.49M | Sep 30, 2023 |
| 9 | BLACKROCK FINANCE, INC. | 1364742 | 3.13M | 22.72M | Jun 30, 2024 |
| 10 | VANGUARD GROUP INC | 102909 | 3.05M | 11.61M | Dec 31, 2025 |
| 11 | AIGH CAPITAL MANAGEMENT LLC | 1835943 | 3M | 13.50M | Mar 31, 2026 |
| 12 | DRIEHAUS CAPITAL MANAGEMENT LLC | 938206 | 2.93M | 13.20M | Mar 31, 2026 |
| 13 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.87M | 12.90M | Mar 31, 2026 |
| 14 | LOGOS GLOBAL MANAGEMENT LP | 1792126 | 2.50M | 8.07M | Sep 30, 2025 |
| 15 | PERCEPTIVE ADVISORS LLC | 1224962 | 2.28M | 10.33M | Mar 31, 2023 |
| 16 | DAFNA CAPITAL MANAGEMENT LLC | 1389933 | 2.03M | 9.13M | Mar 31, 2026 |
| 17 | GOLDMAN SACHS GROUP INC | 886982 | 1.65M | 7.43M | Mar 31, 2026 |
| 18 | RTW INVESTMENTS, LP | 1493215 | 1.50M | 6.75M | Mar 31, 2026 |
| 19 | DEEP TRACK CAPITAL, LP | 1856083 | 1.50M | 6.75M | Mar 31, 2026 |
| 20 | WOODLINE PARTNERS LP | 1784547 | 1.40M | 6.30M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.