He found traders and analysts who worried that a tax on high frequency trading could damage the industry, including Larry Tabb of the Tabb Group.

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Larry Tabb, founder of the financial technology research firm, TABB Group, has in the past made two key points related to high-frequency trading.

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Can we hold out hope that the new combined public firm, which will be one of the largest high frequency trading, market making, broker dealing firms in the world, will be audited by a group of professionals that can make sure the arguably systemically important new public company has airtight IT?

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The high-frequency trading boom he was riding had roots there with people who traded at the exchanges, now CME Group and the Chicago Board Options Exchange.

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Also in late 2009, Chicago hedge fund giant Citadel Investment Group became embroiled in a legal battle with two former staffers who had started up their own high-frequency trading outfit, Teza Technologies.

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