Authorities spotted what appears to be a $7.9 billion computer glitch at NYSE Euronext’s Arca stock market.

A system upgrade at Arca triggered an apparent 9.6% drop in an exchange-traded fund Monday, Bloomberg News said. That plunge would have knocked $7.9 billion off one of the country’s most popular securities.

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The SPDR S&P 500 ETF Trust was trading at $106.46 at 4.15pm…

Continue reading Computer Glitch Could Have Wiped $7.9 Billion Off ETF

Computer Glitch Could Have Wiped $7.9 Billion Off ETF originally appeared on DailyFinance on Tue, 19 Oct 2010 09:09:00.

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