Once testing a prospective trading strategy is complete, there are additional steps to assess its viability before risking real cash.
The SEC chairman said she would push for new rules after a system caused a three-hour halt on the Nasdaq today.
Nikkei 225 futures volume plunged more than 90 percent as a software error forced a halt to Osaka trading of some derivatives.
Japan's second major system error in seven months underscored the challenge the country faces to revive its reputation as a global equity hub.
In the wake of its failed bid to merge with NYSE Euronext, Eurex will roll out a completely new trading system for matching trades.