The operator of the largest U.S. cryptocurrency exchange slumped 6% to $256.76 on Thursday, dropping for a fourth straight day. That left the shares just above the $250 reference price for its April direct listing. An exchange-traded fund that tracks shares of companies that recently went public plunged for an eighth day, the longest slide since 2015. Virgin Galactic and Opendoor, companies that came to market through blank-check offerings, each sank at least 3.8%.

“We saw a mini-bubble in SPACs, IPOs, crypto, clean-tech and hyper-growth in late 2020 and early 2021 and many of these asset classes are nursing bad hangovers,” said Mike Bailey, director of research at FBB Capital Partners.

Coinbase’s slide comes as investors pour into extremely speculative cryptocurrencies such as Dogecoin and Binance Coin — tokens that the exchange doesn’t offer. Most of its traffic had come from Bitcoin trades, but the price of the largest crypto coin has been mired in a narrow band for weeks. Coinbase started trading at $381 on April 14 before briefly topping $400. It’s now down 22% from the close on its first day.

Nasdaq had set a reference price of $250 a share on April 13 for Coinbase’s direct listing, a number that’s a requirement for the stock to begin trading, but not a direct indicator of the company’s potential market capitalization.

“What has really hurt Coinbase, now that their direct listing has taken off, you’re seeing expectations that other exchanges are coming on board,” said Edward Moya, senior market analyst at Oanda. “There’s this belief this could be as good as it gets for Coinbase in the short-term.”