SEC Plans HFT, Co-Lo Reviews

The move follows the SEC's proposals to ban flash orders last September and to increase transparency in dark pools last November, and is intended to be the start of a comprehensive review of equity markets, which in recent years have seen growing trading volumes, the rise of low-latency trading, and the formation of new trading venues leading to dispersed liquidity.

Among the key issues the SEC seeks to examine is "whether the current highly automated, high-speed market structure is fundamentally

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