COSTAR GROUP INC — institutional ownership

4 funds reported holding COSTAR GROUP INC in their latest 13F filings, worth $3.79M in total (CUSIP 22160N959).

Largest holders

1. IMC-Chicago, LLC — $1.95M
2. GROUP ONE TRADING LLC — $881K
3. Itau Unibanco Holding S.A. (ITUB) — $587K
4. SIMPLEX TRADING, LLC — $371K