Curbs to Prevent Stock Volatility May Be Delayed, Bats Says

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New curbs to limit rapid price moves in individual stocks and changes to rules designed to prevent market-wide routs may be delayed two months to April, according to exchange operator Bats Global Markets Inc.

The shift from circuit breakers that pause trading if a stock rises or falls 10 percent in five minutes to curbs that limit moves without automatically triggering a halt will take effect April 8 instead of Feb. 4, subject to regulatory approval, the Lenexa, Kansas-based company said in a notice on its website. Changes to an existing program that stops all equity-based trading across stocks, options and futures will also be delayed, Bats said in the statement.