In this work, I develop a new volatility measure; the volatility implied by price changes in option contracts and their underlyings. I refer to this as implied price change volatility. First, I examine the time series behavior of implied price change volatility and investigate possible moneyness...

This dissertation studies whether stock price reactions to quarterly earnings announcements depend on stock liquidity. Baker and Stein (2004) and Scheinkman and Xiong (2003) develop models showing that liquidity can be affected by investor sentiment or speculative trading. With short-sale...