10 biggest opening weekends of all time: 'The Avengers,' 'Iron Man 3,' 'The Dark Knight'
Updated: 'Iron Man 3' is now #2
3. "Harry Potter and the Deathly Hallows, Pt. 2"
Opening Weekend: July 15, 2011
Three-day gross: $169.1 million
Final U.S. cume: $381 million
Final Global gross: $1.3 billion
Photo Credit: Warner Bros.