Callahan Advisors, LLC's ownership history for MHD

Callahan Advisors, LLC currently holds 236.6K shares with a market value of $2.7M. It started holding MHD on 2026-03-31. At its peak, it held 236.6K shares on 2026-03-31. Its highest holding value was $2.7M on 2026-03-31. At its lowest, it held 236.6K shares on 2026-03-31, with a value of $2.7M on 2026-03-31.