Stocks finished mostly lower on Thursday after paring sharp early losses. Investors weighed more hot inflation data, though producer prices did show slightly slower year-over-year growth in April than in March. The Labor Department reported that its PPI for final demand rose 11% from the prior year in April, down from 11.5% in March but above consensus. On the employment front, first-time claims for state unemployment benefits rose to 203,000 for the week ended May 7, up from a revised 202,000 a week earlier and a