Spot VIX also diverged from its normal inverse correlation to the SPY again, making it 4 days in a row or positive correlation. I'd love to see someone run through the data on this to see when the last time was that this happened (typically positive SPY-VIX correlations are negative for the market in the following days).
VIX remains 5.6% below actual market volatility over the past 30 days (HV21 at 14.53) resulting in a continuation of a negative risk premium. While this is unusual it's not unheard of, especially after a recent spike in VIX like we saw in mid-April. If we get a few more low volatility days in the market HV21 will come down to about 13.75 by Thursday.
The daily SPY arbitrage model is still holding a pretty wide spread as well:
Given that the usual correlations seem to be temporarily broken and the contango spread is neutral it seems best to continue to wait it out a bit for a more profitable setup. Alternatively, if I owned XIV/SVXY I still think it's a good idea to pick up some cheap VXX calls as I mentioned via Twitter last Wednesday.
UPDATE
Performance of S&P 500 after 3 or more consecutive days of positive SPY-VIX correlation, from 3/2004 to present: