Quorum (https://www.jpmorgan.com/global/Quorum) is an enterprise-focused fork of the Ethereum codebase, and offers a private blockchain infrastructure aimed specifically at financial use cases. It was created by J.P.Morgan, and claims to address three of the topics that would make a public blockchain network unsuitable for business use:

• Privacy, of both transaction and contract data
• Higher performance and throughput
• Permission and governance