It’s been a busy week for the VIX and it’s certainly not over yet.

On Wednesday with the?Federal Reserve’s meeting minutes, the VIX had its biggest one-day percentage gain since November 2011. For the day, it jumped 19.25% to close at 14.68.

Now with?Thursday’s weak economic data and less than two hours left in the trading day, the VIX is up almost 8.9% to 15.98. For the week, it may see a 28% jump; this represents its greatest rise since the end of September 2011 when the VIX increased more than 33%.?

Here’s CNBC’s recent take.

Volatility ETFs are also part of the conversation. Take a look at these recent stories.

MarketWatch:?Do VIX futures hedge stock market risk?

Wall Street Sector Selector: VIX Blasts Off On Wednesday