Harry Potter sales break another record

NEW YORK (CNNMoney.com) -- The last installment of the Harry Potter series sold a record-breaking 11.5 million copies in the U.S. in the first 10 days on sale, the book's publisher Scholastic announced Thursday.

Scholastic previously announced that J.K. Rowling's highly anticipated Harry Potter and the Deathly Hallows sold 8.3 million copies within the first 24 hours it went on sale in the U.S.

The company said it printed copies of the seventh book of the series up to the final hours prior to its release July 21 and was able to print enough additional copies to be in position for re-supply following the launch.

The additional copies brought the total number of the U.S. edition in print for the book to 14 million.

To date, more than 350 million copies of the seven books in the Harry Potter series have been sold worldwide.

Shares of Scholastic (down $0.12 to $32.35, Charts) were little changed in late session trading on Nasdaq.