Federal Reserve Board Governor Lael Brainard said Thursday that there are "some signs of financial imbalances in the economy." In a speech to the Global Finance Forum, Brainard said two areas of elevated risk are asset valuations and business leverage. Brainard said that it was premature for the Fed to revisit the calibration of core capital and liquidity requirements for the large banks. "Prudence would argue for waiting until we have tested how the new framework performs through a full economic cycle before we make judgments about its performance," she said. Last week, Brainard voted against a Fed proposal to make changes to a major capital rule, but the proposition moved forward by a 2-1 vote.