MAY 30, 2018
Investors often succumb to their worst impulses in a topsy-turvy market.
Last year, the stock market's ups and downs were a gentle bobbing ride on a lazy river. This year, the market has more peaks and troughs than the Storm Runner roller coaster at Hersheypark.
In 2017, the S&P 500 had just eight days with 1 percent movements for the entire year. As of mid-April, the S&P 500 had moved up or down at least 1 percent on 28 days in 2018. That's 15 increases – which no one complains about – and 13 drops. Thanks to all the ups and downs, the S&P 500...