First-hand SEC EDGAR 13F-HR institutional holdings: the top 25 holders ranked by market value, plus the largest adds and trims this quarter. Quarter 2026-03-31.
| Filer | Shares | Market Value | Δ Shares | Change |
|---|---|---|---|---|
SUVRETTA CAPITAL MANAGEMENT, LLCCIK 0001569064 | 4,168,970 | $263.27M | +4,168,970 | NEW |
SR ONE CAPITAL MANAGEMENT, LPCIK 0001910264 | 2,401,868 | $151.68M | +2,401,868 | NEW |
CITADEL ADVISORS LLCCIK 0001423053 | 1,825,672 | $115.29M | +1,825,672 | NEW |
FMR LLCCIK 0000315066 | 1,792,909 | $113.22M | +1,792,909 | NEW |
VIKING GLOBAL INVESTORS LPCIK 0001103804 | 1,690,555 | $106.76M | +1,690,555 | NEW |
Siren, L.L.C.CIK 0002005245 | 1,505,374 | $95.06M | +1,505,374 | NEW |
Aberdeen Group plcCIK 0001716774 | 1,054,660 | $66.60M | +1,054,660 | NEW |
JPMORGAN CHASE & COCIK 0000019617 | 976,166 | $59.40M | +976,166 | NEW |
INFINITUM ASSET MANAGEMENT, LLCCIK 0002058093 | 731,149 | $46.17M | +731,149 | NEW |
VANGUARD CAPITAL MANAGEMENT LLCCIK 0002100119 | 699,645 | $44.18M | +699,645 | NEW |
MARSHALL WACE, LLPCIK 0001318757 | 654,601 | $41.34M | +654,601 | NEW |
BALYASNY ASSET MANAGEMENT L.P.CIK 0001218710 | 532,906 | $33.65M | +532,906 | NEW |
Paradigm Biocapital Advisors LPCIK 0001855655 | 525,000 | $33.15M | +525,000 | NEW |
AMERIPRISE FINANCIAL INCCIK 0000820027 | 514,035 | $32.46M | +514,035 | NEW |
Woodline Partners LPCIK 0001784547 | 500,646 | $31.62M | +500,646 | NEW |
Deep Track Capital, LPCIK 0001856083 | 500,000 | $31.57M | +500,000 | NEW |
WELLINGTON MANAGEMENT GROUP LLPCIK 0000902219 | 477,833 | $30.18M | +477,833 | NEW |
UBS Group AGCIK 0001610520 | 347,075 | $21.92M | +347,075 | NEW |
Vivo Capital, LLCCIK 0001674712 | 300,000 | $18.95M | +300,000 | NEW |
STIFEL FINANCIAL CORPCIK 0000720672 | 294,117 | $18.57M | +294,117 | NEW |
BlackRock, Inc.CIK 0002012383 | 282,611 | $17.85M | +282,611 | NEW |
FRANKLIN RESOURCES INCCIK 0000038777 | 200,000 | $12.63M | +200,000 | NEW |
GEODE CAPITAL MANAGEMENT, LLCCIK 0001214717 | 178,206 | $11.26M | +178,206 | NEW |
Catalio Capital Management, LPCIK 0001958125 | 173,582 | $10.96M | +173,582 | NEW |
GOLDMAN SACHS GROUP INCCIK 0000886982 | 168,975 | $10.67M | +168,975 | NEW |
| Filer | Δ Shares | Value |
|---|---|---|
SUVRETTA CAPITAL MANAGEMENT, LLCNEW | +4,168,970 | $263.27M |
SR ONE CAPITAL MANAGEMENT, LPNEW | +2,401,868 | $151.68M |
CITADEL ADVISORS LLCNEW | +1,825,672 | $115.29M |
FMR LLCNEW | +1,792,909 | $113.22M |
VIKING GLOBAL INVESTORS LPNEW | +1,690,555 | $106.76M |
Siren, L.L.C.NEW | +1,505,374 | $95.06M |
Aberdeen Group plcNEW | +1,054,660 | $66.60M |
JPMORGAN CHASE & CONEW | +976,166 | $59.40M |
INFINITUM ASSET MANAGEMENT, LLCNEW | +731,149 | $46.17M |
VANGUARD CAPITAL MANAGEMENT LLCNEW | +699,645 | $44.18M |