0 is the total number of securities MACK WILLIAM L has owned.
The securities at the top of the list are the highest-conviction holdings of MACK WILLIAM L.
The conviction is calculated by counting the number of quarters a security has been reported by MACK WILLIAM L. The higher the number, the higher the conviction and longer the holding period.
This page lists all the securities that MACK WILLIAM L owns currently or has owned in the past.