CITADEL ADVISORS LLC's ownership history for REGN

CITADEL ADVISORS LLC currently holds 145.0K shares with a market value of $111.9M. It started holding REGN on 2024-09-30. At its peak, it held 680.5K shares on 2025-06-30. Its highest holding value was $357.3M on 2025-06-30. At its lowest, it held 70.3K shares on 2024-09-30, with a value of $47.5M on 2025-03-31. In the recent 180 days, CITADEL ADVISORS LLC has decreased its shares by 535.5K. In the recent year, CITADEL ADVISORS LLC has decreased its shares by 47.4K.

It has also owned 2.7K contracts of calls, with the market value of the underlying securities totaling $204.8M on 2024-09-30. At its peak, it held 2.9K contracts of calls on 2025-06-30 and it owned calls with the market value of the underlying securities totaling $204.8M on 2025-12-31. At its lowest, it held 1.5K contracts of calls on 2024-09-30 and it owned calls with the market value of the underlying securities totaling $117.5M on 2025-09-30. In the recent 180 days, CITADEL ADVISORS LLC has decreased its holdings by 252 contracts. In the recent year, CITADEL ADVISORS LLC has increased its holdings by 967 contracts.

It has also owned 2.7K contracts of puts, with the market value of the underlying securities totaling $211.5M on 2024-09-30. At its peak, it held 2.7K contracts of puts on 2025-12-31 and it owned puts with the market value of the underlying securities totaling $211.5M on 2025-12-31. At its lowest, it held 1.6K contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $92.6M on 2025-09-30. In the recent 180 days, CITADEL ADVISORS LLC has increased its holdings by 762 contracts. In the recent year, CITADEL ADVISORS LLC has increased its holdings by 142.9K contracts.