Over the long run, big stock indexes finish up or down more than 1% on one-third of all trading days. Last year, it happened on just 14%, and on fewer than 10% in 2013. Recent market swings are a sign that things are getting back to normal.
via Oil’s Rebound Lifts U.S. Stocks, but More Obstacles Lurk — Abreast of the Market – WSJ.