From IGN:
Pretty excited to see how 4 does. So close, now.
Microsoft notes that Halo: Reach eclipsed all previous 2010 U.S. entertainment launches, including the three-day opening weekends of Hollywood blockbusters Iron Man 2, Alice in Wonderland and Toy Story 3. Halo 3, meanwhile, made $170 million in the United States, breaking all previous single-day entertainment launch records, and breaking the previous record held by Halo 2 ($125 million). 120 million pieces of user-generated content have been created for Halo 3 since launch.
Pretty excited to see how 4 does. So close, now.