ADVISORY RESEARCH INC's ownership history for NPK

ADVISORY RESEARCH INC currently holds 147.6K shares with a market value of $20.2M. It started holding NPK on 2026-03-31. At its peak, it held 147.6K shares on 2026-03-31. Its highest holding value was $20.2M on 2026-03-31. At its lowest, it held 147.6K shares on 2026-03-31, with a value of $20.2M on 2026-03-31.