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Markets saw sell-offs Wednesday morning on concern over China’s stock market.

The New York Stock Exchange temporarily halted trading at midday, due to an apparent technical problem.

The S&P 500 was down 1.3% to 2,053.75.

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The Dow Jones Industrial Average was down 1.2% to 17,561.72.

The Nasdaq also was down 1.5% to 4,923.67.

The yield on a 10-year Treasury bond was down 0.5% to 2.22%.

The price of gold was up 0.7% to $1,161.

HEALTHCARE

Peregrine Pharmaceuticals Inc. shares were trading down about 3% to $1.23 a share and a market capitalization of $236.7 million. The Tustin-based biopharmaceuticals company said it will report next week the financial results for its fiscal 2015 ended April. Analysts are expecting a loss of 30 cents a share for the fiscal year, compared with a loss of 22 cents a share for the year prior.