Ten days after the reality of “rampant manipulation” in VIX was exposed yet again, perhaps because this time the market went down, US regulators are reportedly escalating their investigations into whether any wrongdoing occurred within VIX ETPs.

Following previous reports that The Financial Industry Regulatory Authority (FINRA) was scrutinizing whether traders placed bets on S&P 500 options in order to influence prices for VIX futures, and a whistleblower’s detailed explanation of how easy it is to spoof VIX’s tail to wag the market’s dog; Bloomberg reports that The Securities and Exchange Commission and the Commodity Futures Trading Commission have been conducting a broad review of trading since Feb. 5, when volatility spiked and investors lost billions of dollars, several people familiar with the matter said.

As a reminder, according to his letter, the whistleblower blames this VIX manipulation as the driver of last week’s volatility complex collapse:

“We contend that the liquidation of the VIX ETPs last week was not due solely to flaws in the design of these products, but instead was driven largely by a rampant manipulation of the VIX index,”

And, Bloomberg notes that after the losses, SEC officials reached out to Credit Suisse, a person with direct knowledge of the conversations said. Neither Credit Suisse nor ProShares have been accused of any wrongdoing. The regulators’ examinations are at an early stage and won’t necessarily lead to sanctions or new rules.

As another reminder, in May of last year we academic confirmation of the rigged nature the US equity market’s volatility complex, when a scientific study found “systemic VIX auction settlement manipulation.”

Two University of Texas at Austin finance professors found “large transient deviations in VIX prices” around the morning auction,“consistent with market manipulation.”

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