Forbes reports that Vanguard is leveraging blockchain technology to ingest data on mutual funds totaling $1.3 trillion of their $5.2 trillion in assets under management; Symbiont is the company providing the service with their platform called Assembly; Vanguard uses the Center for Research in Security Prices for their indexes, but it has previously been a manual process to bring in data; now the process is automatic once any change has been made to the index by CRSP; the article notes that the same could have been achieved without blockchain, but this approach was taken to increase client trust. Source