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.
The Securities and Exchange Commission said Monday that the heads of various U.S. exchanges have agreed to strengthen circuitbreakers and other ways of handling erroneous trades.