Most option sellers never look at the number Cboe prints next to the VIX.\ This week it hit 6.93. It's COR1M, Cboe's 1-month implied correlation: how tightly S&P 500 stocks are expected to move together, on a 0 to 100 scale. 6.93 was near a 10th-percentile low. That's how the VIX held 14.8 with earnings season underway. Most of the biggest S&P 500 companies report within a month, so their 1-month options carry the earnings gap. Inside the index, those gaps mostly cancel. Your short put on one stock keeps the whole move. Where to look instead, every trading day: 1. COR1M and DSPX beside the VIX. Low correlation with rising dispersion means the VIX is understating single-stock risk. 2. The stock's term structure. Find the expiry with the earnings bump. A high IV Rank is often one overnight gap dressed up as 45 days of premium. 3. That stock's skew at your expiry, against its own history. Skip the SKEW Index here. It prices S&P 500 crash tails and says nothing about one company's earnings gap. The same Cboe report shows S&P 500 skew steepening from the 9th to the 15th percentile while the VIX fell. Index puts are where correlation risk gets priced. Someone was paying up for the day these stocks start falling together. Source: Cboe Macro Volatility Digest, Oct 12, 2026