Banks and insurance companies around the world are beginning to pay attention to the digital currency, in some cases even starting experimental projects to leverage the key underlying technologies. One technique under investigation by Nasdaq is to allow stocks in private companies to be traded using a blockchain, which would allow a public accounting visible to everyone to be used before these stocks become public. Citi has an equivalent technology called Citicoin that it is testing across various labs around the globe. Other banks are already using bitcoin or experimenting with the technologies.”]
Source: https://securityintelligence.com/how-banks-are-leveraging-bitcoin-and-blockchain-technologies/