Nasdaq Stockholm has announced that 21Shares has listed its first two physically backed exchange-traded notes (ETN) on the Swedish trading platform. The two instruments listed, with Bitcoin (BTC) and Ether (ETH) as underlying assets, represent a new segment for ETNs — a type of unsecured debt security that tracks an underlying index of equities and trades on a major exchange. According to the announcement, the new ETNs will provide investors access to investment opportunities in cryptocurrenc...