Given the potential applications for distributed ledgers in clearing and settlement, blockchain technology is increasingly drawing interest from major stock market operators.
Among the most early and active financial firms exploring the technology have been major US firms including Nasdaq, which has launched its own blockchain-based service for private shares; the New York Stock Exchange (NYSE), which in 2015 invested in bitcoin exchange provider Coinbase; and the Australian Securities Exchange (ASX), which is working with Digital Asset Holdings to develop blockchain solutions.
http://www.coindesk.com/deutsche-borse-blockchain-prototypes/