For the world’s richest people, there used to be three ways to quickly see a fortune disappear: Death, default or divorce.

The past few months have added another risk: Sky-high valuations of giant technology companies falling from the stratosphere.

Mark Zuckerberg’s wealth plummeted as much as $31 billion on Thursday, the third-biggest one-day drop in wealth since the Bloomberg Billionaires Index began compiling data in 2012. Two of his co-founders, Eduardo Saverin and Dustin Moskovitz, saw their fortunes tumble $4.6 billion and $3.1 billion, respectively, as Meta Platforms Inc. shares plunged 26%. Over at Spotify Inc., Chief Executive Officer Daniel Ek’s net worth has fallen by $1.1 billion so far in 2022, to $2.7 billion.

An 11-digit move in wealth had previously been reserved for monumental events in the lives of billionaires. Some recent high-profile examples include Jeff Bezos’s divorce in 2019 and Bill Hwang losing $20 billion in a matter of days when his Archegos Capital Management imploded last year under the weight of margin calls.

Now it’s becoming almost routine, especially with the volatile swings in Elon Musk’s fortune. The world’s richest person lost $35 billion in a day in November as Tesla Inc. shares fell following a Twitter poll in which Musk asked voters if he should sell 10% of his stake in the company. His net worth also plunged $25.8 billion last week, adding to a long list of daily declines that dominate the list of the Top 10 biggest drops ever recorded by Bloomberg’s index.

Of course, Musk and other tech titans can add to their fortunes in a blink of an eye, too. Shares of Inc. surged about 18% in extended trading on Thursday after profit beat estimates and it raised the price of its Prime subscription service.

That’s a boon for Bezos, who slipped one spot to the world’s third-richest person on Thursday, the first time he’s fallen out of the Top 2 since September 2017. An 18% increase would boost his net worth by $25 billion, which would be the sixth-biggest gain on record in a decade of Bloomberg data.

“This kind of volatility is to be expected when you’re at these valuations,” Sharmin Mossavar-Rahmani, head of Goldman Sachs Group Inc.’s investment-strategy group, said in an interview last week.

Even if broader declines in tech shares are contained, Zuckerberg’s losses are especially striking because he’s been a mainstay among the world’s 10 richest people since mid-2015. He nearly fell out of the Top 10 after Thursday’s rout, ranking just ahead of Mukesh Ambani, Asia’s richest man, in the Bloomberg wealth index.

It’s another indication of the unpredictable ways in which the U.S. rebound from the Covid-19 pandemic will ripple across markets, companies and the economy.

With assistance from Jack Witzig.

This article was provided by Bloomberg News.