Direxion Daily Junior Gold Miners Index Bull 2X Shares(NYSE:JNUG) andDirexion Daily Junior Gold Miners Index Bear 2X Shares(NYSE:JDST) both find themselves in the spotlight but for contrasting reasons. The former leveraged exchange-traded fund lost more than 4% during Thursday's afternoon session while the latter moved up nearly 4%.

The underlying gold market rebounded sharply since late February of this year, mainly due to inflationary concerns. Indeed, last year, retail giantCostco(NASDAQ:COST) reported that it sold millions of dollars' worth of gold bars to its members. Costco began selling one-ounce bullion bars in September.

Fundamentally...