BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

CHESAPEAKE CAPITAL CORP /IL/'s Holding History (CIK: 0001093908)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 3,544 Value ($000) $624 Avg Close $163.37 Range $138.00 - $185.17