The attacks, which strained a two-month cease-fire between Iran and the United States, were the latest jolt to energy markets.

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Oil prices jumped and stocks plunged after Iran and Israel exchanged strikes, raising doubts about the future of fragile cease-fire in the Middle East.

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The S&P 500 fell more than 2.6 percent on Friday, its worst one-day drop of the year and ending nine weeks of gains.

Elon Musk’s rocket company, on the cusp of the largest initial public offering ever, will soon end up in index funds after rule changes by Nasdaq and other index providers.

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