When it comes to bitcoin exchange traded funds, the one that gets the most attention is the yet-to-be listed Winkelvoss Bitcoin Trust, an ETF sponsored by twin brothers Cameron and Tyler Winkelvoss.

SecondMarket’s Bitcoin Investment Trust could beat its Winkelvoss rival to market. In fact, the Bitcoin Investment Trust has been available to accredited investors and has already amassed $70 million in assets under management, SecondMarket’s Barry Silbert told ETF Trends. The bulk of those inflows have come courtesy of family offices, tech entrepreneurs and Wall Street professionals, according to Silbert.

The Bitcoin Investment Trust is expected to list on the OTCQX in the fourth quarter and Silbert says the goal is to eventually list the Trust on a major U.S. exchange.

SecondMarket’s Bitcoin Investment Trust is comparable to commodities ETFs such as the SPDR Gold Shares (NYSEArca: GLD) and the iShares Silver Trust (NYSEArca: SLV) in that the Trust ensures storage and safekeeping while focusing exclusively on a single asset.

“Because the BIT already complies with FINRA statutes, it will be able to file to open the exchange on a much more accelerated timeline than the Winklevosses,” Business Insider reported in March.