	investment firms have pct of purolator pcc a group of affiliated new york base investment firms and funds told the securities and exchange commission they have uired shares of purolator courier corp or pct of the total outstanding the group led by mutual shares corp said it bought the stock for investment purposes it also said it is studying the dlr a share leveraged buyout offer made by purolator managers and e f hutton lbo inc but has not decided whether it will tender its stock in the offer the group said it has held talks with the hutton lbo group before and may do so again reuter 
