05/22/12 - U.S. stocks little changed Tuesday; DJIA closes down a point... 05/22/12 - U.S. stocks little changed Tuesday; DJIA closes down a point... 05/22/12 - U.S. stocks little changed Tuesday; DJIA closes down a point... 05/22/12 - U.S. stocks little changed Tuesday; DJIA closes down a point...