“The world’s first bitcoin-based security available on a regulated exchange has launched on Sweden’s Nasdaq. Bitcoin Tracker One, developed by Stockholm-based firm XBT Provider, is an Exchange Traded Note (ETN) that allows traders to invest in bitcoin and access the returns of the underlying asset in US dollar per bitcoin. ‘We are proud to offer the world’s first ‘bitcoin tracker’ to be traded on a regulated exchange,’ said Alexander Marsh, CEO of XBT Provider after the tracker was authorised in April 2015. Nasdaq OMX group announced last week that it will be using bitcoin’s underlying blockchain technology to facilitate the trading of shares on its US stock market.”
http://www.ibtimes.co.uk/bitcoin-trading-launches-nasdaq-stockholm-exchange-1501772