"We use mutual fund manager data from the technology bubble to examine the hypothesis that inexperienced investors play a role in the formation of asset price bubbles. Using age as a proxy for managers' investment experience, we find that around the peak of the technology bubble, mutual funds...

In competitive capital markets, portfolios of risky debt claims have high systematic risk exposure in bad times if they offer a high "yield" in good times. We apply this idea to measurement of bank risk. Rather than trying to directly measure asset risks on the balance sheet — the typical...