Mary Jo White, head of the Securities and Exchange Commission, has made it clear that she wants to improve market structures. Spinning off from that would be taking steps to address dark pools, "flash crashes" and high-frequency trading. "The SEC's been very focused on enhancing its technology in the market-structure space," White said. "A lot of our budget requests are directed at precisely that." Register today and take advantage of early-bird rates for SIFMA's 14th Annual Market Structure Conference, Oct. 17 in New York City.