“Outgoing Federal Reserve Chair Janet Yellen said U.S. stocks and commercial real estate prices are elevated but stopped short of saying those markets are in a bubble. ‘What we look at is, if stock prices or asset prices more generally were to fall, what would that mean for the economy as a whole?’ Yellen said. ‘And I think our overall judgment is that, if there were to be a decline in asset valuations, it would not damage unduly the core of our financial system.’”