Link: What is the VIX1D & How Does it Work? | tastylive
The Volatility Index (VIX) measures implied volatility for a 30-day ahead period, the VIX1D, or the 1-Day Volatility Index, measures expected volatility in the S&P 500 Index for the current trading day.
Link: What's the VVIX, and Why Does It Matter?
The VVIX Index is the volatility of the volatility (VIX) it measures the volatility of the price of ...