ETF Trends editor@etftrends.com (ETF Trends) ETF TrendsOctober 18, 2017Comment Regulators still have not approved a bitcoin exchange traded product in the U.S., but there are ways for investors to access the high-flying cryptocurrency via ETFs. By way of a stake in the Grayscale’s Bitcoin Investment Trust (GBTC), the ARK Web x.0 ETF (ARKW) offers investors bitcoin exposure.