 "Rockstar" reached its 3,000,000 downloads mark in the U.S. in May 2009 and became the best selling rock single of the 21st century before "How You Remind Me".It reached 4 million in sales in the U.S. in June 2012, making it the band's best selling hit in that country.As of January 2015, the song has sold 4.5 million copies in the US.