Cornerstone Advisors, LLC's ownership history for IBKR

Cornerstone Advisors, LLC currently holds 202.0K shares with a market value of $13.0M. It started holding IBKR on 2025-12-31. At its peak, it held 202.0K shares on 2025-12-31. Its highest holding value was $13.0M on 2025-12-31. At its lowest, it held 202.0K shares on 2025-12-31, with a value of $13.0M on 2025-12-31.