'Avengers: Age of Ultron' knocks out 'The Twilight Saga: New Moon'
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5. "Harry Potter and the Deathly Hallows, Pt. 2"
Opening day: July 15, 2011
Biggest stars: Daniel Radcliffe, Ralph Fiennes, Emma Watson, Rupert Grint
Opening weekend: $169.1 million
Overall U.S. box office: $381 million
Global box office: $1.3 billion
Lowdown: The no. 1 opener all-time for 10 months, "Deathly Hallows, Pt. 2" also earned the least overall domestically for any film currently in the top 8.*
*This assumes "Avengers: Age of Ultron" will surpass its U.S. total.