Computer errors shook American equity markets again today as malfunctioning software that feeds data between exchanges prompted Nasdaq Stock Market to halt trading in stocks and options.
Nasdaq said in alerts posted on its website that trading on its exchanges had been halted amid issues at its Securities Information Processor, the feed that disseminates stock quotes. The second-biggest stock market operator in the U.S. halted transactions in what it calls Tape C, which comprises all Nasdaq-listed securities.
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