London says it acted to prevent the plant’s Chinese owners from closing the plant, threatening jobs and national security.

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While the S&P 500 rose, other corners of the financial markets showed that investors expect big swings to continue.

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Beijing retaliated with higher tariffs on U.S. goods, a tit-for-tat move that intensified investors’ anxiety.

Beijing retaliated with higher tariffs on U.S. goods, a tit-for-tat move that intensified investors’ anxiety and rattled already shaky markets.

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A day after recording its best gain since 2008, the S&P 500 fell 3.5 percent on Thursday, showing that fears about tariffs hampering economic growth were still alive.

The S&P 500 slid, as trade hostilities continued to heat up between Washington and Beijing. Earlier, stocks in Europe and Asia soared.

The S&P 500 slipped, as trade hostilities continued to heat up between Washington and Beijing. Stocks in Europe and Asia had soared earlier, after President Trump paused some tariffs.

The S&P skidded 2.7 percent, amid investor fears that tit-for-tat tariffs could raise prices, slow the economy and sow uncertainty among businesses.