Competition among stock exchanges

The NY Times has a story about how New Rivals Pose Threat to New York Stock Exchange.

"While the exchange has been under assault since the beginning of the decade, its decline has accelerated in recent years as aggressive competitors have emerged. Today, 36 percent of daily trades in stocks that are listed on the New York Stock Exchange are actually executed on the exchange, down from about 75 percent nearly four years ago. The rest of are conducted elsewhere, on new electronic exchanges or through dark pools. "

..."Unlike the Big Board, the new electronic exchanges are virtually unknown outside financial circles. Direct Edge, the largest, is in Jersey City. Another, the BATS Exchange, is based in Lenexa, Kan. Both are only about five years old. But each now accounts for about a 10th of daily United States stock trading. "

I'm reminded of Estelle Cantillon's paper with Pai-Ling Yin on a battle between London and Frankfurt exchanges: Competition between Exchange: Lessons from the Battle of the Bund