The massive selling on Wall Street sent the Dow down more than 500 points on Thursday, marking its steepest point decline since December 2008, while the CBOE Volatility Index the stock market’s gauge of investors’ fears soared 35% yesterday and closed above 31 to its highest level in more than a year or since July 1, 2010. We are definitely observing some wild times on Wall Street amidst new economic worries worldwide.  Here is a useful tool to help measure the volatility, and risk, of individual stocks: Beta.

Many nervous investors who fled stocks turned to options to manage the downside risk in the equity markets that led the VIX to an intraday high level of 32.07 for the first time since March 16th, levels not seen since the Japan’s earthquake and tsunami, and ended up 35% yesterday, its biggest daily percentage increase since February 27th, 2007 when it rose 64.2%. Anxiety had been brewing since July when VIX climbed over 52% and resulted in the biggest monthly volatility increase since September 2008, at the height of the financial crisis.