For anyone who thinks the Vix settlement is manipulated, here is your chance to take advantage of it. You can participate in the opening of the SPX options that mark the VIX. http://cfe.cboe.com/market-data/settlement/hoss-information Here you will see the indications of opening of the April SPX options. If you put an order in you will get the opening price (if you mark your order opening). Currently the options appear to be opening very cheap, indicating a VIX markdown.