Advisors to the world’s wealthiest people are urging clients to pounce on potential bargains after U.S. stock markets registered their worst four-day performance since the depths of the 2008 financial crisis.

“While we are not trying to call the bottom of the market, past experience suggests this is a good time to invest in U.S. stocks for investors with a time horizon of several months or more,” Mark Haefele, chief investment officer at UBS Global Wealth Management, said in a note Thursday as the continuing spread of the coronavirus shook investors’ faith in the endurance of the longest bull market in history.

Anastasia Amoroso, global investment specialist at JPMorgan Private Bank, expects “a near-term bounce off extremely oversold levels.” She’s advising some clients to look to the options market in anticipation of a “snapback” driven by soothing words from the administration or the central bank. Amoroso also suggests selectively adding to U.S. and China tech, healthcare and electric vehicles, for those looking out six months and beyond.

Wilmington Trust investment chief Tony Roth also sees a longer-term opportunity -- though it’s predicated on potential economic pain in coming years.

“For clients that are qualified, investing in private markets, in opportunities that take advantage of stressed companies, distressed opportunities and bankruptcies is very compelling right now,” he said in a phone interview. “We will see a lot of stressed companies come up for sale in the next 12 months.”

In a separate note Thursday, Haefele advised clients to focus on oversold sectors, including U.S. consumer discretionary and communications.

Digital content providers such as those that offer streaming services, as well as e-commerce retailers, “are likely to prove to be more defensive, and potentially even beneficiaries of more time being spent at home.”

So far, this week’s rout has erased a combined $344 billion from the fortunes of the world’s 500 richest people, including $111 billion on Thursday alone. The S&P 500 Index and Dow Jones Industrial Average have both dropped more than 10% since markets opened Monday. The last time either benchmark had a worse four-day stretch was November 2008.

The carnage extended beyond equities. Junk-bond investors pulled $4.2 billion during the week ended Feb. 26, according to data compiled by Refinitiv Lipper, one of the biggest withdrawals ever.

Thursday’s swoon shaved $5.3 billion off the net worth of Inc. founder Jeff Bezos, who remains the world’s richest person with a $116.5 billion fortune, according to the Bloomberg Billionaires Index. Former Microsoft Corp. Chief Executive Officer Steve Ballmer and Tesla Inc.’s Elon Musk each lost about $4 billion. The top 24 people in the ranking ended the day with at least $1 billion less than where they started.

This article was provided Bloomberg News.