Eric Scott Hunsader, founder and CEO of market-data software company Nanex, became a prominent critic of high-frequency trading after founding the firm in 2000. His analysis focused on the operation of electronic markets and the behavior of high-frequency traders, areas where complex systems and opaque exchange practices can make misconduct difficult for regulators and investors to detect.
In February 2016, the U.S. Securities and Exchange Commission awarded Hunsader $750,000 under its whistleblower program for information that led to a $5 million fine against the New York Stock Exchange. The supplied source does not specify the precise NYSE conduct at issue, but identifies the payment and enforcement action as a direct consequence of Hunsader’s disclosures. The case illustrates the regulatory importance of independent technical scrutiny in computerized financial markets and left the NYSE subject to a substantial SEC penalty.