IRON MTN INC DEL — institutional ownership

3 funds reported holding IRON MTN INC DEL in their latest 13F filings, worth $23.4M in total (CUSIP 46284V901).

Largest holders

1. IMC-Chicago, LLC — $19.2M
2. SIMPLEX TRADING, LLC — $2.91M
3. GROUP ONE TRADING LLC — $1.26M