Wall Street's most widely followed gauge of future stock market volatility is being manipulated, a law firm representing an "anonymous whistleblower" alleged in a letter to U.S. regulators on Tuesday.
The accusations prompted Cboe Global Markets, the financial exchange operator that is home to the Cboe Volatility Index, to ask Wall Street's self-funded regulator, the Financial Industry Regulatory Authority (FINRA), to look into the matter, two sources familiar with the situation said.
"Cboe has a dedicated regulatory department that works with FINRA to monitor certain trading activity for our securities markets, including trading activity that could impact the VIX settlement," Greg Hoogasian, Cboe's chief regulatory officer, said in a statement.
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