FORMFACTOR INC — institutional ownership

4 funds reported holding FORMFACTOR INC in their latest 13F filings, worth $10.2M in total (CUSIP 346375958).

Largest holders

1. IMC-Chicago, LLC — $7.36M
2. GROUP ONE TRADING LLC — $1.25M
3. SIMPLEX TRADING, LLC — $784K
4. HRT FINANCIAL LP — $767K