Avengers: Endgame nukes various box office records:
Largest Thursday Previews: $60 million
Widest Opening: 4,662 theaters
Largest Friday, Opening Day and Single Day: $156.7 million
Largest Saturday: $109 million
Largest Sunday: $84.3 million
Domestic Opening Weekend: $357.1 million
#1 Movie Market Share: 90%
Highest Per Theater Average (Wide Opening): $75,075 / 4,662 theaters
Largest April Opening, Spring Opening, PG-13 Opening and 3-Day Gross: $357.1 million
Biggest Weekend Overall (Top 12 Gross): $389 million
Fastest to $100 Million: 1 Day
Fastest to $150 Million: 1 Day
Fastest to $200 Million: 2 Days
Fastest to $250 Million: 3 Days
Fastest to $300 Million: 3 Days
Fastest to $350 Million: 3 Days
International Opening Weekend: $859 million
Worldwide Opening Weekend: $1.2 billion
Global 4DX Format Opening Record: ~$15 million / 635 screens
Global 3D Opening Record: ~$540 million
Global IMAX Opening Record: $91.5 million
Source:
https://www.boxofficemojo.com/news/?id=4507&p=.htm