Walleye Trading LLC's ownership history for BIIB

Walleye Trading LLC currently holds 99.5K shares with a market value of $18.2M. It started holding BIIB on 2025-03-31. At its peak, it held 99.5K shares on 2026-03-31. Its highest holding value was $18.2M on 2026-03-31. At its lowest, it held 11.2K shares on 2025-03-31, with a value of $1.5M on 2025-03-31. In the recent 180 days, Walleye Trading LLC has increased its shares by 88.3K.

It has also owned 115 contracts of calls, with the market value of the underlying securities totaling $2.1M on 2024-12-31. At its peak, it held 345 contracts of calls on 2025-12-31 and it owned calls with the market value of the underlying securities totaling $6.1M on 2025-12-31. At its lowest, it held 115 contracts of calls on 2026-03-31 and it owned calls with the market value of the underlying securities totaling $1.9M on 2025-09-30. In the recent 180 days, Walleye Trading LLC has decreased its holdings by 20 contracts. In the recent year, Walleye Trading LLC has decreased its holdings by 210 contracts.

It has also owned 63 contracts of puts, with the market value of the underlying securities totaling $1.2M on 2024-12-31. At its peak, it held 412 contracts of puts on 2025-03-31 and it owned puts with the market value of the underlying securities totaling $5.6M on 2025-03-31. At its lowest, it held 32 contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $448.3K on 2025-09-30. In the recent 180 days, Walleye Trading LLC has increased its holdings by 31 contracts. In the recent year, Walleye Trading LLC has increased its holdings by 99.1K contracts.