On the other hand, the Direxion Daily Junior Gold Miners Index Bear 3X Shares (NYSEArca: JDST), the inverse 3x counterpart to JNUG, attracted $29.2 million in inflows in the past month as the ETF plunged 45.2%.

ETF traders who are uncomfortable with the riskier 3x products can also track the miner space with a smaller 2x leverage. For example, the ProShares Ultra Gold Miners (NYSEArca: GDXX) and ProShares Ultra Junior Miners (NYSEArca: GDJJ) take the 2x or 200% daily performance of NYSE Arca Gold Miners Index and Market Vectors Global Junior Gold Miners Index, respectively.

The double-leveraged inverse versions of GDXX and GDJJ include the ProShares UltraShort Gold Miners (NYSEArca: GDXS) and the ProShares UltraShort Junior Miners (NYSEArca: GDJS).

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Direxion Daily Gold Miners Bull 3X Shares