U.S. shares rally; dollar rises in May Day trading

By Sam Forgione NEW YORK (Reuters) - U.S. shares rebounded sharply on Friday on gains in healthcare and technology stocks, while the dollar rose from nine-week lows on signs that the U.S. economy may be stabilizing. The Nasdaq snapped a four-day losing streak, while the S&P tech sector gained 1.5 percent and the S&P healthcare sector gained 1.3 percent. Apple shares rose 3 percent and were the biggest boost to the major U.S. indexes. All major European markets except London, its biggest,