	tisch brothers lower tosco tos stake an investment partnership led by four sons of loews corp ltr chairman lawrence tisch said it cut its tosco corp stake to the equivalent of shares or pct of the total from shares or pct in a filing with the securities and exchange commission the partnership flf associates said it sold shares of serier e convertible preferred stock on march for dlrs each and shares of preferred stock on march at dlrs each the sales leave the tisch brothers with shares of preferred stock which can be converted into shares of common stock reuter 
