1 min agoRussell 2000 Rides Its Best Start to a Year Since 1991ByThe Russell 2000 is quietly having its best start to a year since 1991.The small-cap index is up 18% so far this year, which puts it on pace for its best first five months of a year since it rose nearly 35% in 1991, according to Dow Jones Market Data.The index is on pace to beat the S&P 500 by 7.9 percentage points, which would be its largest margin through five months since 2010.