Institutional Ownership
Atrium Therapeutics Inc
CUSIP 04965N104COMQ1 2026
Institutional Holders
156
13F filers
Shares Held
13.75M
Aggregate institutional
Institutional Value
$161.37M
Q1 2026
Net New Holders
+155
155 new · 0 closed
Institutional Ownership Trend
Aggregate 13F value by quarter
Multi-quarter trend — upgrade to see history
UpgradePosition Activity
Q1 2026
New positions155
Increased0
Decreased0
Sold out0
Institutional Holders
156 funds hold this security · Q1 2026
| # | Fund | Shares | Value | Δ Shares | Activity |
|---|---|---|---|---|---|
| 1 | Blackrock, Inc. | 1.21M | $16.11M | +1.21M | New |
| 2 | Ra Capital Management, L.P. | 864.1K | $11.55M | +864.1K | New |
| 3 | Tig Advisors, LLC | 607.6K | $8.12M | +607.6K | New |
| 4 | Pentwater Capital Management LP | 602.6K | $8.06M | +602.6K | New |
| 5 | O'Connor Alternative Investments LLC | 578.0K | $7.73M | +578.0K | First Filing |
| 6 | Sessa Capital Im, L.P. | 551.4K | $7.37M | +551.4K | New |
| 7 | Goldman Sachs Group Inc | 349.9K | $4.68M | +349.9K | New |
| 8 | Farallon Capital Management LLC | 349.4K | $4.67M | +349.4K | New |
| 9 | Geode Capital Management, LLC | 319.8K | $4.28M | +319.8K | New |
| 10 | 683 Capital Management, LLC | 300.0K | $4.01M | +300.0K | New |
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