PEAK6 LLC's ownership history for BIIB

PEAK6 LLC currently holds 28.2K shares with a market value of $5.2M. It started holding BIIB on 2024-12-31. At its peak, it held 30.6K shares on 2025-03-31. Its highest holding value was $5.2M on 2026-03-31. At its lowest, it held 8.8K shares on 2024-12-31, with a value of $1.3M on 2024-12-31. In the recent 180 days, PEAK6 LLC has decreased its shares by 2.5K.

It has also owned 332 contracts of calls, with the market value of the underlying securities totaling $6.1M on 2024-12-31. At its peak, it held 1.3K contracts of calls on 2025-09-30 and it owned calls with the market value of the underlying securities totaling $18.5M on 2025-12-31. At its lowest, it held 127 contracts of calls on 2024-12-31 and it owned calls with the market value of the underlying securities totaling $1.9M on 2024-12-31. In the recent 180 days, PEAK6 LLC has decreased its holdings by 975 contracts. In the recent year, PEAK6 LLC has increased its holdings by 205 contracts.

It has also owned 231 contracts of puts, with the market value of the underlying securities totaling $4.2M on 2025-03-31. At its peak, it held 927 contracts of puts on 2025-12-31 and it owned puts with the market value of the underlying securities totaling $16.3M on 2025-12-31. At its lowest, it held 80 contracts of puts on 2025-03-31 and it owned puts with the market value of the underlying securities totaling $1.1M on 2025-03-31. In the recent 180 days, PEAK6 LLC has decreased its holdings by 546 contracts. In the recent year, PEAK6 LLC has increased its holdings by 28.1K contracts.