Stocks log 4-day losing streak on Fed uncertainties

The Dow Jones Industrial Average fell 66.79 points to end at 15,334.59, dragged by JPMorgan and Verizon.

The S&P 500 slid 4.42 points to close at 1,697.42, while the Nasdaq eked out a gain of 2.97 points to finish at 3,768.25.

The CBOE Volatility Index (VIX), widely considered the best gauge of fear in the market, ended near 14.

Meanwhile, the Russell 2000 index crept higher to hit an all-time high. Small-cap stocks have led for most of the year, surging nearly 27 percent.