U.S. regulators are scrutinizing this month's implosion of investments that track stock-market turmoil, including whether wrongdoing contributed to steep losses for VIX exchange-traded products offered by Credit Suisse Group AG and other firms, several people familiar with the matter said.
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, the people said.
Among those looking into what happened are lawyers in the SEC's enforcement division, which investigates firms for potential misconduct and fines them if it finds violations of securities laws, two of the people said. There is no indication thus far that specific companies, including Credit Suisse, are being probed. ...
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