Market executives call for overhaul of US stock trading rules

The executives said high-frequency trading and dark pools create complexity that favours sophisticated investors

Market executives called for an overhaul of stock market trading rules in a US Senate hearing Tuesday, saying the shift to high-frequency and off-exchange trading has created too much complexity that favors the most sophisticated investors.

The hearing, the second by the Senate Banking Committee on computer-driven trading in the past month, comes amid heightened scrutiny of off-exchange venues such as dark pools and high-frequency trading, which accounts for about half of all trading in US stocks.

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