Such partitions are done in two way overt and covert. Overt partition is for the need of market re-evaluation while covert partition aims to hide information.

分拆行为可以区分为显性分拆和隐性分拆两种类型，显性分拆行为出于对行情重新审视的需要，而隐性分拆行为出于掩饰交易信息的需要。