13F

Stock

Biogen Inc.

BIIB · held by 7 managers

Reported value

$241.4M

Holders

7

+1 new · −0 exited

Holders’ est. mark

$943.3K

Price effect on 5 books still in the name

Largest holder

$127.3M

BARCLAYS PLC

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
BARCLAYS PLC457.8K$127.3M$508.2KCut−$45.2M
Employees Provident Fund Board345K$95.9M$382.9KAdded$382.9K
Swiss Life Asset Management Ltd39.7K$11M$25KAdded$3.27M
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main24.1K$6.71M$26.8KCut−$9.95M
Marex Group plc1.15K$320.3KNew
Leonteq Securities AG273$75.9K$303Cut−$2.88M
CHESAPEAKE ASSET MANAGEMENT LLC50$13.9KHeld

Positions as of Q1 2023. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.