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