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

D. E. Shaw & Co., Inc. currently holds 155.5K shares with a market value of $120.0M. 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 155.5K shares on 2025-12-31, with a value of $120.0M on 2025-12-31. In the recent 180 days, D. E. Shaw & Co., Inc. has decreased its shares by 622.0K. In the recent year, D. E. Shaw & Co., Inc. has decreased its shares by 344.8K.

It has also owned 152 contracts of calls, with the market value of the underlying securities totaling $11.7M 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 152 contracts of calls on 2025-12-31 and it owned calls with the market value of the underlying securities totaling $11.7M on 2025-12-31. In the recent 180 days, D. E. Shaw & Co., Inc. has decreased its holdings by 98 contracts. In the recent year, D. E. Shaw & Co., Inc. has decreased its holdings by 235 contracts.

It has also owned 78 contracts of puts, with the market value of the underlying securities totaling $6.0M 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 78 contracts of puts on 2025-12-31 and it owned puts with the market value of the underlying securities totaling $6.0M on 2025-12-31. In the recent 180 days, D. E. Shaw & Co., Inc. has decreased its holdings by 104 contracts. In the recent year, D. E. Shaw & Co., Inc. has increased its holdings by 155.1K contracts.