Walleye Trading LLC's ownership history for REGN

Walleye Trading LLC currently holds 12.9K shares with a market value of $9.9M. It started holding REGN on 2025-03-31. At its peak, it held 12.9K shares on 2025-12-31. Its highest holding value was $9.9M on 2025-12-31. At its lowest, it held 3.0K shares on 2025-03-31, with a value of $1.9M on 2025-03-31. In the recent 180 days, Walleye Trading LLC has increased its shares by 5.1K.

It has also owned 170 contracts of calls, with the market value of the underlying securities totaling $13.1M on 2024-12-31. At its peak, it held 170 contracts of calls on 2025-12-31 and it owned calls with the market value of the underlying securities totaling $13.1M on 2025-12-31. At its lowest, it held 36 contracts of calls on 2025-09-30 and it owned calls with the market value of the underlying securities totaling $2.0M on 2025-09-30. In the recent 180 days, Walleye Trading LLC has increased its holdings by 117 contracts. In the recent year, Walleye Trading LLC has increased its holdings by 11 contracts.

It has also owned 152 contracts of puts, with the market value of the underlying securities totaling $11.7M on 2024-12-31. At its peak, it held 155 contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $11.7M on 2025-12-31. At its lowest, it held 72 contracts of puts on 2024-12-31 and it owned puts with the market value of the underlying securities totaling $4.8M on 2025-06-30. In the recent 180 days, Walleye Trading LLC has increased its holdings by 60 contracts. In the recent year, Walleye Trading LLC has increased its holdings by 12.8K contracts.