These are generally derived from the mid-place between the "invest in" and "sell" transactional rates from global currency markets. They are not transactional rates. Learn more Nowcasts of core PCE inflation are primarily based on earlier core PCE inflation, Nevertheless they can be impacted by the availability of CPI https://financefeeds.com/finery-markets-adds-stillmans-liquidity-to-its-non-custodial-copyright-ecn/