REGENERON PHARMACEUTICALS — institutional ownership

5 funds reported holding REGENERON PHARMACEUTICALS in their latest 13F filings, worth $142M in total (CUSIP 75886F907).

Largest holders

1. IMC-Chicago, LLC — $109M
2. GROUP ONE TRADING LLC — $13.8M
3. SIMPLEX TRADING, LLC — $8.42M
4. HRT FINANCIAL LP — $7.42M
5. BDF-GESTION — $2.53M