The S&P 500 fell on Monday as Wall Street begins a new month of trading, weighed down by losses in Nvidia and volatility in bitcoin.

Bitcoin dropped below $80,000 for the first time since April, a sign investors were taking more risk off the table following Friday’s sharp declines in gold and silver. Silver, which has more than doubled over the past 12 months, plunged around 30% on Friday. That marked the metal’s worst one-day performance since 1980. Gold also dropped around 9%.

The cryptocurrency, as well as the two metals, later came off their respective lows Monday, which helped trim losses in equity futures and ease risk-off sentiment. Bitcoin last traded above $78,000, while spot gold and spot silver were down more than 3% each.

Wall Street also turned its attention to Nvidia as questions over the artificial intelligence loomed. The Wall Street Journal reported, citing people familiar with the matter, that Nvidia’s plans to pour $100 billion into OpenAI had stalled, with chipmaker execs expressing doubt about the deal. Nvidia shares were down more than 1% in the premarket.

Big earnings, jobs week

More than 100 S&P 500 companies are due to report this week, including Amazon and Alphabet. The overall reporting season has been strong thus far, but there have been some high-profile post-earnings sell-offs, including Microsoft.

Nonetheless, Deutsche Bank strategists noted this weekend that earnings growth is on track to be the strongest in four years.

On Monday, Disney reported earnings that beat analyst expectations.

Wall Street is also awaiting the release of the January U.S. jobs report, due Friday morning. Economists polled by Dow Jones expect 55,000 jobs were added last month.

Stocks are coming off a losing session, with the major benchmarks falling after President Donald Trump named Kevin Warsh as his nominee for Federal Reserve chairman. If confirmed, Warsh would replace Jerome Powell later this year.