By John Waggoner
USA TODAY
Just two short months into 2014, we already have one mutual fund that’s up more than 100%. But don’t chase these gains: The fund is so risky that even its sponsors warn investors off.
Direxion Daily Junior Gold Miners Index Bull 3X shares (JNUG), soared 101.5% from Dec. 31, 2013, through the end of February, says Morningstar, which tracks the funds. How did the fund do that?