D. E. Shaw & Co., Inc.'s ownership history for REGN

D. E. Shaw & Co., Inc. currently holds 861.6K shares with a market value of $484.4M. It started holding REGN on 2024-12-31. At its peak, it held 861.6K shares on 2025-09-30. Its highest holding value was $484.4M on 2025-09-30. At its lowest, it held 500.2K shares on 2024-12-31, with a value of $356.3M on 2024-12-31. In the recent 180 days, D. E. Shaw & Co., Inc. has increased its shares by 282.7K.

It has also owned 437 contracts of calls, with the market value of the underlying securities totaling $24.6M on 2024-12-31. At its peak, it held 437 contracts of calls on 2025-09-30 and it owned calls with the market value of the underlying securities totaling $27.6M on 2024-12-31. At its lowest, it held 250 contracts of calls on 2025-06-30 and it owned calls with the market value of the underlying securities totaling $13.1M on 2025-06-30. In the recent 180 days, D. E. Shaw & Co., Inc. has increased its holdings by 54 contracts.

It has also owned 200 contracts of puts, with the market value of the underlying securities totaling $11.2M on 2024-12-31. At its peak, it held 388 contracts of puts on 2024-12-31 and it owned puts with the market value of the underlying securities totaling $27.6M on 2024-12-31. At its lowest, it held 182 contracts of puts on 2025-06-30 and it owned puts with the market value of the underlying securities totaling $9.6M on 2025-06-30. In the recent 180 days, D. E. Shaw & Co., Inc. has decreased its holdings by 36 contracts.