Whether higher idiosyncratic return volatility means more or less informative stock prices is an ongoing debate. All the existing literature relies on cross-sectional evidence, which makes it hard to isolate the effects of price informativeness on idiosyncratic volatility from other effects. I...

Fundamental innovation usually involves huge upfront costs, but the benefits are spread across various sectors of the economy. Given the large costs and limited appropriability of the benefits associated with fundamental innovations, individual firms underinvest in these innovations relative to...