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 |
|---|---|---|---|---|
GSK plcCIK 0001131399 | 18,245,691 | $132.28M | – | no_change |
MAVERICK CAPITAL LTDCIK 0000934639 | 11,317,399 | $82.05M | +1,657,162 | ↑ INC |
FEDERATED HERMES, INC.CIK 0001056288 | 5,317,457 | $38.55M | +572,937 | ↑ INC |
683 Capital Management, LLCCIK 0001404574 | 4,900,000 | $35.52M | +885,000 | ↑ INC |
PRIMECAP MANAGEMENT CO/CA/CIK 0000763212 | 4,832,952 | $35.04M | +737,670 | ↑ INC |
M28 Capital Management LPCIK 0001807489 | 4,588,284 | $33.27M | -1,076,264 | ↓ DEC |
CITADEL ADVISORS LLCCIK 0001423053 | 2,818,156 | $20.43M | +463,192 | ↑ INC |
Siren, L.L.C.CIK 0002005245 | 2,450,000 | $17.76M | – | no_change |
RTW INVESTMENTS, LPCIK 0001493215 | 1,350,000 | $9.79M | – | no_change |
BAKER BROS. ADVISORS LPCIK 0001263508 | 822,638 | $5.96M | +478,575 | ↑ INC |
TANG CAPITAL MANAGEMENT LLCCIK 0001232621 | 600,000 | $4.35M | – | no_change |
Walleye Capital LLCCIK 0001758720 | 533,512 | $3.87M | +131,589 | ↑ INC |
AQR CAPITAL MANAGEMENT LLCCIK 0001167557 | 451,185 | $3.27M | +248,464 | ↑ INC |
Woodline Partners LPCIK 0001784547 | 350,531 | $2.54M | – | no_change |
Aquatic Capital Management LLCCIK 0001803916 | 323,573 | $2.35M | +251,832 | ↑ INC |
Newtyn Management, LLCCIK 0001569241 | 300,000 | $2.17M | – | no_change |
Hudson Bay Capital Management LPCIK 0001393825 | 296,600 | $2.15M | +296,600 | NEW |
PLATINUM INVESTMENT MANAGEMENT LTDCIK 0001256071 | 275,269 | $2.00M | +44,582 | ↑ INC |
Itau Unibanco Holding S.A.CIK 0001132597 | 102,000 | $1.75M | – | no_change |
MANUFACTURERS LIFE INSURANCE COMPANY, THECIK 0000928047 | 240,983 | $1.75M | +58,255 | ↑ INC |
GROUP ONE TRADING LLCCIK 0000932540 | 236,300 | $1.71M | +133,700 | ↑ INC |
Scientech Research LLCCIK 0002011556 | 200,331 | $1.45M | +184,758 | ↑ INC |
Sofinnova Investments, Inc.CIK 0001631134 | 189,253 | $1.37M | +31,071 | ↑ INC |
J. Goldman & Co LPCIK 0001412741 | 175,496 | $1.27M | +40,434 | ↑ INC |
BOOTHBAY FUND MANAGEMENT, LLCCIK 0001549230 | 174,311 | $1.26M | -60,488 | ↓ DEC |
| Filer | Δ Shares | Value |
|---|---|---|
MAVERICK CAPITAL LTD↑ INC | +1,657,162 | $82.05M |
PRICE T ROWE ASSOCIATES INC /MD/↑ INC | +1,297,178 | $63.11K |
683 Capital Management, LLC↑ INC | +885,000 | $35.52M |
PRIMECAP MANAGEMENT CO/CA/↑ INC | +737,670 | $35.04M |
FEDERATED HERMES, INC.↑ INC | +572,937 | $38.55M |
BAKER BROS. ADVISORS LP↑ INC | +478,575 | $5.96M |
CITADEL ADVISORS LLC↑ INC | +463,192 | $20.43M |
Hudson Bay Capital Management LPNEW | +296,600 | $2.15M |
Aquatic Capital Management LLC↑ INC | +251,832 | $2.35M |
AQR CAPITAL MANAGEMENT LLC↑ INC | +248,464 | $3.27M |
| Filer | Δ Shares | Value |
|---|---|---|
Bellevue Group AG↓ DEC | -1,485,257 | $38.14K |
M28 Capital Management LP↓ DEC | -1,076,264 | $33.27M |
Point72 Asset Management, L.P.↓ DEC | -627,367 | $265.35K |
GROUP ONE TRADING LLC↓ DEC | -61,709 | $45.38K |
BOOTHBAY FUND MANAGEMENT, LLC↓ DEC | -60,488 | $1.26M |
Knott David M Jr↓ DEC | -50,000 | $290.00K |
Walleye Trading LLC↓ DEC | -17,053 | $326.89K |
Orion Porfolio Solutions, LLC↓ DEC | -2,184 | $165.63K |
Rafferty Asset Management, LLC↓ DEC | -1,137 | $75.55K |
INCEPTIONR LLC↓ DEC | -504 | $73.46K |