Why the Stock Market Is Growing Jittery Again

After large-cap stocks pushed to levels not seen since November, market bears emerged from hibernation last week thanks to a collection of concerns — including an upcoming Federal Reserve policy meeting, weakness in crude oil as supply concerns ease and growing worries the United Kingdom could really leave the European Union. While stocks merely retraced recent gains, the CBOE Volatility Index (VIX), known as Wall Street's "fear gauge," surged up and out of a tight three-month sideways pat