Motivated by agency theory, we explore how powerful CEOs influence the extent of stock price informativeness. Using idiosyncratic volatility to measure stock price informativeness, we find that firms with more powerful CEOs experience a more opaque information environment. This is consistent...

Using hundreds of significant anomalies as testing portfolios, this paper compares the performance of major empirical asset pricing models. The q-factor model and a closely related five-factor model are the two best performing models among a long array of models. The q-factor model outperforms...