Atrium Therapeutics, Inc. RNA
8.68 USD -0.04 (-0.46%)
At closeNov 4, 2026, 4:01 PM EST
8.68 0.00 0.00%
After hours · Nov 4, 4:01 PM ET
8.50 Day range 8.90
7.49 52-week range 16.77
- YTD
- -41.15%
- 1 year
- -41.15%
Held by funds
55 US ETFs and mutual funds hold RNA · largest positions
Ownership
Held by insiders 2.79%
Held by institutions 0.25%
Float held by institutions 0.26%
Institutions 13
Top institutional holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| Vanguard Group Inc | 8.80% | 13,649,250 | 202.28M | Dec 30, 2025 |
| Blackrock Inc. | 8.28% | 12,850,801 | 190.45M | Dec 30, 2025 |
| RA Capital Management, L.P. | 5.57% | 8,641,031 | 128.06M | Dec 30, 2025 |
| Janus Henderson Group PLC | 4.47% | 6,939,503 | 102.84M | Dec 30, 2025 |
| Balyasny Asset Management LP | 3.89% | 6,040,590 | 89.52M | Dec 30, 2025 |
| Pentwater Capital Management Lp | 3.88% | 6,026,500 | 89.31M | Dec 30, 2025 |
Top mutual fund holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund | 2.77% | 4,303,392 | 63.78M | Sep 29, 2025 |
| VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund | 2.08% | 3,234,628 | 47.94M | Sep 29, 2025 |
| iShares Trust-iShares Russell 2000 ETF | 1.88% | 2,921,656 | 43.30M | Dec 30, 2025 |
| T. Rowe Price New Horizons Fund, Inc. | 1.69% | 2,621,852 | 38.86M | Sep 29, 2025 |
| T. Rowe Price Health Sciences Fund, Inc. | 1.63% | 2,531,865 | 37.52M | Sep 29, 2025 |
| VANGUARD INDEX FUNDS-Vanguard Small-Cap Value Index Fund | 1.33% | 2,070,296 | 30.68M | Sep 29, 2025 |
Insiders
| Insider | Relation | Latest transaction | Date | Shares held |
|---|---|---|---|---|
| BOYCE SARAH | Chief Executive Officer | Sale | Jan 20, 2026 | 269,007 |
| CALDERARO CHARLES III | Officer | Sale | Jan 6, 2026 | 49,797 |
| FLANAGAN WILLIAM MICHAEL | Officer | Sale | Jan 20, 2026 | 85,093 |
| GALLAGHER KATHLEEN P | Officer | Stock Award(Grant) | Dec 16, 2025 | 80,838 |
| HUGHES STEVEN GEORGE | Officer | Sale | Jan 20, 2026 | 31,599 |
| LEVIN ARTHUR A. | Director | Sale | Jan 20, 2026 | 170,434 |