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BOSTON (MarketWatch) -- NYSE Arca will cancel all trades in the SPDR S&P 500 ETF /quotes/comstock/13*!spy/quotes/nls/spy (SPY 117.84, -0.78, -0.66%) that were executed at 4:15 p.m. EDT Monday about 10% below the official closing price of $118.28 a share, according to reports. The glitch occurred after the closing auction was delayed due to a software upgrade at the exchange, the reports said. A spokeswoman for NYSE Euronext couldn't immediately be reached late Monday |
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