RNA NASDAQ
Atrium Therapeutics, Inc.
1W: -1.7%
1M: -4.5%
3M: -82.1%
YTD: -81.9%
1Y: -56.9%
3Y: +15.9%
5Y: -33.5%
$13.09
+0.05 (+0.38%)
Weekly Expected Move ±5.8%
$12
$12
$13
$14
$15
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🏦 Institutional Activity
Latest: Q1 2026131
Institutions Holding
+0 vs prior
62.6%
Ownership
+62.65%
130
New
0
Increased
0
Reduced
0
Closed
👔 Insider Trades
25 records| Date | Name | Title | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-04-20 | Winslow Brendan R. | officer: chief financial officer | A-Grant/Award | 30,000 | $— | $0 | Filing |
| 2026-04-20 | Hughes Steven George | officer: chief medical officer | A-Grant/Award | 30,000 | $— | $0 | Filing |
| 2026-04-20 | Kenney Stephanie | officer: see remarks | A-Grant/Award | 30,000 | $— | $0 | Filing |
| 2026-04-20 | Younis Husam | officer: chief scientific officer | A-Grant/Award | 30,000 | $— | $0 | Filing |
| 2026-04-20 | Hoyos Rocio Martin | officer: chief strategy officer | A-Grant/Award | 30,000 | $— | $0 | Filing |
| 2026-04-20 | Gallagher Kathleen P. | officer: see remarks | A-Grant/Award | 102,500 | $— | $0 | Filing |
| 2026-01-21 | MacLean Michael F | officer: chief financial officer | S-Sale | 2,735 | $72.45 | $198K | Filing |
| 2026-01-21 | McCarthy Teresa | officer: chief human resources officer | S-Sale | 1,476 | $72.45 | $107K | Filing |
| 2026-01-21 | McCarthy Teresa | officer: chief human resources officer | S-Sale | 1,453 | $72.45 | $105K | Filing |
| 2026-01-21 | LEVIN ARTHUR A | director | S-Sale | 1,758 | $72.45 | $127K | Filing |
| 2026-01-21 | MacLean Michael F | officer: chief financial officer | S-Sale | 1,807 | $72.45 | $131K | Filing |
| 2026-01-21 | Flanagan W. Michael | officer: chief scientific officer | S-Sale | 3,976 | $72.45 | $288K | Filing |
| 2026-01-21 | Flanagan W. Michael | officer: chief scientific officer | S-Sale | 2,558 | $72.45 | $185K | Filing |
| 2026-01-21 | Boyce Sarah | officer: president and ceo | S-Sale | 6,394 | $72.45 | $463K | Filing |
| 2026-01-21 | Boyce Sarah | officer: president and ceo | S-Sale | 7,993 | $72.45 | $579K | Filing |
| 2026-01-21 | Hughes Steven George | officer: chief medical officer | S-Sale | 2,017 | $72.45 | $146K | Filing |
| 2026-01-21 | Hughes Steven George | officer: chief medical officer | S-Sale | 2,878 | $72.45 | $209K | Filing |
| 2026-01-07 | Boyce Sarah | officer: president and ceo | S-Sale | 8,576 | $72.23 | $619K | Filing |
| 2026-01-07 | Hughes Steven George | officer: chief medical officer | S-Sale | 2,373 | $72.23 | $171K | Filing |
| 2026-01-07 | Calderaro Charles III | officer: chief technical officer | S-Sale | 3,727 | $72.23 | $269K | Filing |
| 2026-01-07 | McCarthy Teresa | officer: chief human resources officer | S-Sale | 1,965 | $72.23 | $142K | Filing |
| 2026-01-07 | Moriarty John B | officer: chief legal officer | S-Sale | 2,374 | $72.23 | $171K | Filing |
| 2026-01-07 | MacLean Michael F | officer: chief financial officer | S-Sale | 1,974 | $72.23 | $143K | Filing |
| 2026-01-07 | Flanagan W. Michael | officer: chief scientific officer | S-Sale | 2,373 | $72.23 | $171K | Filing |
| 2025-12-19 | LEVIN ARTHUR A | director | G-Gift | 1,330 | $— | $0 | Filing |
🏛️ Congressional Trades
0 records| Date | Politician | Chamber | Type | Amount | Filing |
|---|---|---|---|---|---|
| No congressional trades found | |||||
🏦 Top Institutional Holders
20 holders| Holder | Shares | Value | Date Reported | Filing | |
|---|---|---|---|---|---|
| BlackRock, Inc. | 1,205,291 | $16M | +1,205,291 | 2026-03-31 | Filing |
| RA CAPITAL MANAGEMENT, L.P. | 864,102 | $12M | +864,102 | 2026-03-31 | Filing |
| VANGUARD CAPITAL MANAGEMENT LLC | 626,869 | $8M | +626,869 | 2026-03-31 | Filing |
| Pentwater Capital Management LP | 602,649 | $8M | +602,649 | 2026-03-31 | Filing |
| O'Connor Alternative Investments LLC | 578,011 | $8M | +578,011 | 2026-03-31 | Filing |
| Sessa Capital IM, L.P. | 551,391 | $7M | +551,391 | 2026-03-31 | Filing |
| GOLDMAN SACHS GROUP INC | 349,950 | $5M | +349,950 | 2026-03-31 | Filing |
| FARALLON CAPITAL MANAGEMENT LLC | 349,360 | $5M | +349,360 | 2026-03-31 | Filing |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 344,369 | $5M | +344,369 | 2026-03-31 | Filing |
| GEODE CAPITAL MANAGEMENT, LLC | 319,831 | $4M | +319,831 | 2026-03-31 | Filing |
| STATE STREET CORP | 257,086 | $3M | +257,086 | 2026-03-31 | Filing |
| Weiss Asset Management LP | 240,701 | $3M | +240,701 | 2026-03-31 | Filing |
| Balyasny Asset Management L.P. | 235,115 | $3M | +235,115 | 2026-03-31 | Filing |
| Squarepoint Ops LLC | 231,466 | $3M | +231,466 | 2026-03-31 | Filing |
| Arbiter Partners Capital Management LLC | 230,000 | $3M | +230,000 | 2026-03-31 | Filing |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 183,580 | $2M | +183,580 | 2026-03-31 | Filing |
| Slotnik Capital, LLC | 180,945 | $2M | +180,945 | 2026-03-31 | Filing |
| Schonfeld Strategic Advisors LLC | 162,759 | $2M | +162,759 | 2026-03-31 | Filing |
| NEXPOINT ASSET MANAGEMENT, L.P. | 150,025 | $2M | +150,025 | 2026-03-31 | Filing |
| Marble Bar Asset Management LLP | 147,000 | $2M | +147,000 | 2026-03-31 | Filing |