JPMorgan has developed a new privacy feature for ethereum-based blockchains that hides both the sender and the amount in a transaction.
Source: https://www.coindesk.com/jpmorgan-adds-new-privacy-features-to-its-ethereum-based-quorum-blockchain
JPMorgan Adds New Privacy Features to Its Ethereum-Based Quorum Blockchain
May 28, 2019
CoinDesk
