10 of the biggest box-office flops of 2019 so far, including a pair from Matthew McConaughey

The 2019 box office has seen a rebound thanks to Marvel blockbusters, but there have been plenty of flops.Actor Matthew McConaughey and STX Entertainment have been the biggest box-office losers this year, each with more than one notable flop already.Visit Business Insider's homepage for more stories.Marvel is helping the 2019 box office after a slow start. Between “Captain Marvel” and “Avengers: Endgame,” which is shattering box-office records, the box office has seen a significant rebound.But many movies haven't been any help at all.The first major bomb of the year, director Joe Cornish's “The Kid Who Would Be King,” opened just $7 million in January and ultimately made $32 million worldwide. It was made for $60 million. READ MORE: Disney's movie release shake-up shows how it will dominate Hollywood for years to come, from 'Avatar' to 'Star Wars'The biggest box-office losers of the year so far have been actor Matthew McConaughey, who's had two major bombs in the first few months of 2019, and STX Entertainment, which has released a string of flops.McConaughey's January release, “Serenity,” co-starring Anne Hathaway, grossed a rough $8.5 million and had a production budget of $25 million. Harmony Korine's “The Beach Bum,” starring McConaughey, opened with $1.8 million in March, which was the worst opening for a wide release on over 1,000 screens at the time, and one of the worst openings of the actor's career. STX released two bombs in two weekends: the animated “UglyDolls” and “Poms,” which had the worst opening for a movie in over 2,700 theaters over the weekend.“Hellboy” failed to spark excitement last month due to a poor release date, awful reviews, and other major factors. It's made just $21 million and was made for $50 million. The box office will need help from Disney blockbusters such as June's “The Lion King” and December's “Star Wars: The Rise of Skywalker” if it wants to compete with last year's record-breaking gross.Below are 10 box-office flops this year, in order of release date: