I could not trade it in my Fidelity account and JPM, looks like the ETF name changed.

I could not place stop order, need to check with customer support.

From transaction history…

5/2/16 5/2/16 Name Change MARKET VECTORS ETF TR JR GOLD MINERS ETF NEW M033256 TO V010200 NAME CHANGE 57061R544
5/2/16 5/2/16 Name Change VANECK VECTORS ETF TR JR GOLD MINERS ETF V010200 FROM M033256 NAME CHANGE