In President Donald Trump’s second term, crypto assets transformed his family’s wealth. Now the Trumps — and their followers — are getting a crash course in the wild volatility ingrained in digital currencies.

The value of a Trump-branded memecoin has fallen by about a quarter since August. Eric Trump’s stake in a Bitcoin mining ventureBloomberg Terminal has shed roughly half its value from its peak. And shares of Trump’s social media company, which started hoarding Bitcoin this year, are hovering near an all-time low.