Chinese stocks swing wildly after computer error

Chinese stock prices swing wildly after buying frenzy blamed on brokerage's computer error

Associated Press
Chinese regulators blame computer for stock frenzy
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Stock investors sit in front of electronic screens showing index numbers at a brokerage in Shanghai, China, Friday, Aug. 16, 2013. Chinese stock prices swung wildly Friday after a brief trading frenzy blamed on a brokerage's computer error.(AP Photo) CHINA OUT

BEIJING (AP) -- Chinese stock prices swung wildly Friday after a brief trading frenzy blamed on a brokerage's computer error.

Trading volume soared to 54 percent above Thursday's level, with 1.5 billion shares changing hands. That caused the main market index to spike up 6.5 percent before falling to end the day down 0.6 percent.

The country's fifth-largest brokerage, Everbright Securities Ltd., said later it suffered an unspecified problem with a computerized trading system.

Everbright sent 7 billion incorrect purchase orders for shares, according to a government news agency, China News Service.

Share prices of 70 companies including market heavyweights PetroChina Ltd. and major state-owned banks surged by the 10 percent daily limit before falling back, according to CNS.

Everbright asked to have its trades canceled, CNS said. But a statement on the exchange website said any transactions that were completed would be cleared normally.

Phone calls to the Shanghai exchange's press office were not answered.

The exchange and securities regulators were investigating the incident, CNS reported.

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