On Friday, March 9, Atlantic Trading USA LLC (Atlantic) filed a class action complaint in Chicago federal court against numerous unnamed trading firms, alleging manipulation of the Chicago Board Options Volatility Index (VIX). Atlantic alleges that, from 2011 to the present, trading firms have manipulated the VIX settlement price by placing aggressive buy orders during the HOSS auction and then taking advantage of the artificially high VIX settlement price to cash out of expiring long VIX derivatives at a profit. Atlantic claims to represent a nationwide class of investors that has traded VIX futures or options since 2011 and seeks damages “in the hundreds of millions of dollars.” The case is captioned Atlantic Trading USA LLC. V. John Does 1-100, 18-cv-01754 (N.D.Ill.), and the complaint can be found here.
Similar class action complaints were recently filed in New York federal court, alleging collusive and manipulative VIX trading in violation of the Sherman and Clayton Acts, respectively. Those cases are captioned Samuel v. John Does 1-100, 18-cv-01593-AT (S.D.N.Y.) and David Quint v. DRW Holdings and John Does, 18-cv-01980-AT.
Plaintiffs in these cases are serving subpoenas on the Chicago Board Options Exchange and the Chicago Futures Exchange to obtain information sufficient to identify the firms involved in the trading activity at issue. We expect this process to take at least one month and, more likely, it will probably require several months. In the meantime, as a protective measure, trading firms should consider retaining, in addition to their routine account statements and order flow records, any other records reflecting HOSS order imbalances and the firm’s own objective risk and value assessments that formed the basis for their trading decisions during this time.
Steve Bedell, Katie Trkla, Tom Krebs, and Ellen Wheeler have represented numerous clients in numerous VIX-related regulatory proceedings and have defended regulators’ allegations of VIX manipulation arising from SPX order activity in the HOSS on VIX settlement day − an issue central to these lawsuits. For more about our team and our experience in this area, please contact us via our information below, or visit Foley.com.
Similar class action complaints were recently filed in New York federal court, alleging collusive and manipulative VIX trading in violation of the Sherman and Clayton Acts, respectively. Those cases are captioned Samuel v. John Does 1-100, 18-cv-01593-AT (S.D.N.Y.) and David Quint v. DRW Holdings and John Does, 18-cv-01980-AT.
Plaintiffs in these cases are serving subpoenas on the Chicago Board Options Exchange and the Chicago Futures Exchange to obtain information sufficient to identify the firms involved in the trading activity at issue. We expect this process to take at least one month and, more likely, it will probably require several months. In the meantime, as a protective measure, trading firms should consider retaining, in addition to their routine account statements and order flow records, any other records reflecting HOSS order imbalances and the firm’s own objective risk and value assessments that formed the basis for their trading decisions during this time.
Steve Bedell, Katie Trkla, Tom Krebs, and Ellen Wheeler have represented numerous clients in numerous VIX-related regulatory proceedings and have defended regulators’ allegations of VIX manipulation arising from SPX order activity in the HOSS on VIX settlement day − an issue central to these lawsuits. For more about our team and our experience in this area, please contact us via our information below, or visit Foley.com.
Author(s)
Related Insights
July 27, 2026
Events
AHLA’s Annual Meeting & In-House Counsel Program
Foley partners Lisa Noller, chair of the firm’s Litigation Department, and Judy Waltz, chair of the firm’s Health Care Practice Group, are speaking in the American Health Law Association’s (AHLA) Annual Meeting & In-House Counsel Program. Noller’s session is titled “Real or Imagined – Legal Ethical Issues in Providing F&A Advice,” and Waltz is on the panel “Whose Job is MA Compliance Anyway? Differing Expectations for Plans and Providers.”
April 27, 2026
Health Care Law Today
Maine Health Care Transactions: New State Approvals Involving Some Private Equity, Hedge Funds, and MSOs
On April 13, 2026, Governor Janet Mills signed H.P. 1480 / L.D. 2201 (the Act), giving the Maine Department of Health and Human Services (the Department) approval authority over certain health care transactions involving private equity companies, hedge funds, and certain management services organizations (MSOs) connected to private equity or hedge fund ownership.
April 24, 2026
Manufacturing Industry Advisor
FCA v. Kamax: Michigan Supreme Court Dismisses Appeal and Leaves Uncertainty for Automotive Manufacturers
On April 22, 2026, the Michigan Supreme Court entered an order dismissing the appeal of FCA US LLC v. Kamax Inc., a case of considerable…