High-Speed Traders Prompt Business Wire to Study Delays

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Business Wire is considering whether to encourage corporations that distribute press releases through its service to delay sending announcements until a few minutes after 4 p.m. New York time, reducing the odds of altering their stock’s closing price.

The risk, first reported by the Wall Street Journal, was highlighted on Dec. 5 when Ulta Salon Cosmetics & Fragrance Inc. distributed its worse-than-estimated earnings reportBloomberg Terminal through Business Wire, a division of Warren Buffett’s Berkshire Hathaway Inc. Because Ulta sent it before Nasdaq OMX Group Inc. set the price about 1 second after 4 p.m., the stock’s end-of-day level was about $4 less than it would have been had Ulta waited.