Forgive my language but – STAY THE F**K AWAY from JNUG! And NUGT! The custodians were not hedged into the crash and are in deep shit. If Van Eck closes its doors, they have to pay out the NAV on GDX and GDXJ but the derivative shit goes POOF!
Long GDX/Short NUGT; Long GDXJ/Short JNUG would be a perfect arbitrage trade.