Trading volume in options on the Cboe Volatility Index (VIX) reached a new all-time high on Friday, 1 December.
In VIX options at Cboe Options Exchange, a reported 3.1 million contracts traded on Friday, far surpassing the previous single-day record of 2.6 million contracts on Monday, September 25, 2017.
Five of the ten busiest single days ever for trading VIX options have occurred in 2017.