pooled superannuation trust
abbrev. PST trust in which assets of a number of superannuation funds, approved deposit funds (ADFs) or other PSTs are invested and managed by a professional manager. It is a form of unit trust in which the value of the investments of an individual superannuation fund is determined by the value and number of its units in the trust. PSTs can accept deposits only from complying superannuation funds, complying ADFs, and other PSTs. The investment income of the PST is taxable (at concessional rates) within the PST.