FORMFACTOR INC — institutional ownership

4 funds reported holding FORMFACTOR INC in their latest 13F filings, worth $13.6M in total (CUSIP 346375908).

Largest holders

1. IMC-Chicago, LLC — $6.37M
2. SIMPLEX TRADING, LLC — $5.58M
3. GROUP ONE TRADING LLC — $1.60M
4. JPMORGAN CHASE & CO (JPM, AMJB, VYLD, JPM-PC, JPM-PD, JPM-PJ, JPM-PK, JPM-PL, JPM-PM) — $14.4K