LOS ANGELES—Harry Potter continues to work box-office alchemy, turning his latest movie adventure into an overnight blockbuster.

The sixth installment, “Harry Potter and the Half-Blood Prince,” took in $79.5 million domestically over opening weekend and $159.7 million since debuting last Wednesday, according to estimates from distributor Warner Bros. on Sunday.

The movie also took in $237 million overseas since Wednesday in 54 countries, bringing its worldwide total to $396.7 million.

With some of the best reviews of any “Harry Potter” movie, “Half-Blood Prince” was off to the fastest overall start in franchise history.

The new film had the second-highest start ever for a movie premiering on Wednesday, trailing the $200 million five-day opening for last month’s “Transformers: Revenge of the Fallen.”

The Associated Press