	group raises texstyrene foam stake to pct an investor group led by dart container corp a sarasota fla plastic utensil maker told the securities and exchange commission it raised its stake in texstyrene corp to common shares or of the total outstanding the group said it bought the shares for investment and intends to continue to buy texstyrene stock in the future the group said its most recent purchases included shares bought march in ordinary brokerage transactions reuter 
