	california firm has five pct of modulaire modx pbs building systems of america inc an anaheim calif company told the securities and exchange commission it has uired shares of modulaire industries or pct of the total outstanding common stock pbs whose subsidiaries design make sell and lease nonresidential relocatable modular buildings said it bought the stake for dlrs to uire an equity interest in modulaire while it evaluates modulaire depending on several factors pbs said it may decide to buy additional modulaire common shares reuter 
