The Dark Knight Rises was on track to earn $US160 million ($A153.99 million), which would be a record for 2D films, over the weekend following a mass shooting at a Colorado screening of the Batman film.
Citing box office insiders, The Hollywood Reporter, Los Angeles Times, New York Times and other media outlets reported Sunday that the latest Batman sequel earned $US160 to $US162 million.
That amount would best the $US158.4 million debut of The Dark Knight in 2008 and give Dark Knight Rises the third-highest domestic weekend opening ever after the 3D films The Avengers with $US207.4 million and Harry Potter and the Deathly Hallows - Part 2 with $US169.2 million.
Tickets for 3D films cost a few more dollars than 2D screenings, netting extra cash at the box office. Movies released in 3D typically earn under half of their income in 3D screenings, sometimes as little as a third.
Sony, Fox, Disney, Paramount, Universal and Lionsgate joined Dark Knight Rises distributor Warner Bros in publicly withholding their usual revenue reports out of respect for the victims of Friday's cinema massacre, which saw 12 people killed and 58 injured.
Box-office tracking service Rentrak also did not report figures following the shootings.
"This tragedy did not seem to impact the box office in a major way," said Paul Dergarabedian, an analyst for Hollywood.com who specialises in box office.
"For this film to still be in the rarified air of the top-three openings of all time is phenomenal, given the unfortunate circumstances surrounding the release of this film," he said.
Dergarabedian noted that the box-office ranking of director Christopher Nolan's final installment of his Batman trilogy would not be official until Warner Bros and other studios release their final weekend box-office tallies on Monday.