'Iron Man 2' repeats atop Friday b.o.

10:05 AM PDT 5/15/2010 by Carl DiOrio, AP

'Robin Hood' opens with $13.1 million

Comics-inspired action sequel "Iron Man 2" from Paramount and Marvel rung up roughly $15 million in its eighth day of release to top all comers and push cumulative b.o. to $174.1 million. "Iron Man 2" should top the domestic rankings for a second session.