Hundreds of stocks have broken the buck this year, following a slump in the once-hot market for buzzy startups seeking rapid growth.

As of Friday, 557 stocks listed on U.S. exchanges were trading below $1 a share, up from fewer than a dozen in early 2021, according to Dow Jones Market Data. The majority of these stocks—464 of them—are listed on the Nasdaq Stock Market, whose rules require companies to maintain a minimum share price of $1 or risk being delisted.