West's "Graduation" had sold about 600,000 copies and 50 Cent's "Curtis" 430,000 copies, according to data reported to tracking firm SoundScan by eight leading accounts through close of business Thursday.
West's margin of 170,000 units marked an improvement on his first-day lead of 127,000 units. - more on this story
Click here to read today's full report
Preview and Purchase Kanye West music
On the Blue: New Horizons Cruise Days 4 & 5: Starship Lands on the Pearl, Alan Parsons Takes It Home
Kandace Springs - Run Your Race
On the Blue: New Horizons Cruise Day 1: Marbin Gets the Fun Started
Hot In The City: Prog Band Tu-Ner Coming to Phoenix
Pink Floyd's David Gilmour Reveals Song From First New Album In Nine Years
AC/DC Launching High Voltage Dive Bar At Stops On Power Up Tour
Vince Neil Says Motley Crue's New Song 'Dogs of War' Old School Meets New School
Watch Twenty One Pilots' New 'Backslide' Video
Billy Idol Goes Behind The Scenes Of Classic Hit 'Eyes Without A Face'
Ringo Starr Reunited with John Lennon's Lost 1965 Help! Guitar Found in an Attic After 50 Years
Hear Say Anything's New Song 'ON CUM'
Metal Supergroup Leviathan Project Deliver 'MCMLXXXII'