10. Direxion Daily Semiconductor Bull 3x Shares
This ETF offers 3x leveraged daily exposure to the PHLX Semiconductor Index, a benchmark designed to measure the performance of U.S. semiconductor makers and equipment manufacturers. This industry was pummeled during the economic downturn as businesses slashed discretionary spending, but has shown signs of life lately. Since hitting the market in March, SOXL saw more than $40 million in cash inflows by the time the second quarter ended.
9. Global X Silver Miners ETF
This ETF offers exposure to an index comprised of global companies engaged in some aspect of the silver mining industry, including mining, refining, or exploration. As investors have embraced commodity-intensive equities as a means of establishing exposure to natural resources, SIL has come flying out of the gates; between its launch in late April and the end of June, SIL hauled in about $27 million (note: this number from the NSX seems on the low side given that SIL finished June with more than $50 million in assets, so this fund should perhaps be higher up this list).
8. ProShares UltraPro QQQQ
This ETF offers daily 300% leveraged exposure to the popular NASDAQ 100 Index. Despite an abundance of bearish sentiment, interest in this leveraged ETF has been strong; since launching in early February, TQQQ raked in more than $60 million in cash.