Fear returns to Wall Street: Here's what works when it does By: CNBC.com News May 17, 2017 at 09:44 AM EDT Wall Street's fear gauge, the CBOE Volatility index, surged Wednesday, causing traders to dust off their long forgotten market correction playbook. Read More >> Related Stocks: 20+ Year Treas Bond Ishares ETF FINANCIAL SEL INDUSTRIAL SEL MATERIALS