According to Hollywood.com Box Office President Paul Dergarabedian Harry Potter and the Half-Blood Prince from Warner Bros beat the old record for Wednesday midnight screenings of $18.5 million held by 2008 Batman movie The Dark Knight by collecting $22.2 million. The Dark Knight went to $203.7 million in its first five days of release and the new Harry potter's movie may break this record also. The Harry Potter's 6th movie got huge openings all over the world after 2 years of 5th series Harry Potter and the Order of the Phoenix. Author J.K. Rowling's Harry potter series have made $4.5 billion worldwide already till now from the first film in year 2001.