Thursday, January 19, 2006

NASDAQ Error Results in Incorrect Stock Quotes

An AP newswire article, via MSNBC, reports that:

Computer problems at the Nasdaq Stock Market led to erroneous stock quotes on a number of major online financial news sites and brokerages Thursday and prevented approximately 81,000 trades from being reported in the last minutes of the previous trading session.

The stocks affected are all listed on the New York Stock Exchange. NYSE-listed stocks can also be traded electronically on Nasdaq’s computer platform, and Nasdaq is responsible for reporting those trades to a consolidated listing service so investors can see the latest price for a given stock, whether it was traded on the floor of the NYSE or via Nasdaq’s computers.

The Nasdaq said a computer glitch occurred at approximately 5:50 p.m. Eastern time Wednesday, when 610 transactions involving NYSE-listed stocks that had been made at 9:50 a.m. were re-posted to the consolidated tape. That resulted in erroneous closing prices for a number of NYSE-listed stocks being reported, according to a notice issued by Nasdaq Operations late Wednesday.

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