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The Wall Street Journal: NYSE data-feed glitch delays some end-of-day stock prices

A key stock-market data feed run by the New York Stock Exchange suffered a technical glitch on Monday, leading to delays in releasing the end-of-day values of the Dow Jones Industrial Average and the S&P 500. Read More...

A key stock-market data feed run by the New York Stock Exchange suffered a technical glitch on Monday, leading to delays in releasing the end-of-day values of the Dow Jones Industrial Average DJIA, -1.48%   and the S&P 500 SPX, -1.22%  .

The issue was the latest in a series of technical problems for the NYSE in recent years. The NYSE is in the process of upgrading the core technology on its flagship exchange.

The data feed hit by Monday’s glitch is one of two securities information processors, or SIPs, which aggregate information on stock prices and trades and broadcast it out to a range of brokerages and financial-media outlets. The SIP affected by the glitch disseminates data on NYSE-listed stocks as well as some other securities. A SIP run by Nasdaq Inc. was unaffected.

The Consolidated Tape Association, the group that oversees the data feed for NYSE-listed stocks, first reported a problem at 3:15 p.m. New York time and later said it had switched over to a backup data center, according to alerts on the CTA’s website. But it was still experiencing “connectivity and trade input issues” as of 7:28 p.m., according to another alert from the CTA.

An expanded version of this report appears on WSJ.com.

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