Official Paramount estimate for Iron Man 2: $133.6 million.

The box office column will be up later today, but Paramount was nice enough to send the official numbers. Iron Man 2 grossed $52.4 million on Friday and $46.5 million on Sunday. The current weekend estimate is $133.6 million for the Fri-Sun period. That gives the sequel a relatively reasonable 2.54x weekend multiplier. If it holds, it will be the fifth-largest opening weekend on record, behind Pirates of the Caribbean: Dead Man's Chest ($135m), Twilight Saga: New Moon ($142m), Spider-Man 3 ($151m), and The Dark Knight ($158m). Full analysis will be up later this evening, or this afternoon if my daughter actually takes a nap.

Scott Mendelson