Under a newsystemof "circuit breakers" forindividualstocks put in last month by the SEC, U. s.stockexchanges must brieflyhalttradingof major stocks that mark big swings.
The Paris-based company owns a profusion of brands, including Square D circuitbreakers in the U.S., and sells thousands of items for industrial automation and building management.
The index is set to replace the Dow average on April 8 as the index whose action will be monitored for the sharp swings that trigger "circuit breakers" halting all U.S. stock trading.
The SEC is hoping a uniform application of single stock circuitbreakers across the dozens of U.S. trading venues will be a good antidote to volatile downward swings in the future.