On average, depths are larger and relative spreads are smaller on the bid side. Our results lie somewhat between those of Biais et al.
As a new investor, however, you should be aware of some of the more popular (and saner) methods people employ for investing in their stocks: The recommendation strategy The research strategyBuy and hold Dollar cost averaging Constant dollar averaging Mix and match as you see fit; take what you want and leave what you don't like.
NET Windows application that calculates three forecasts for volatility for a user-defined number of days ahead. This time make the GARCH(1,1) forecast using the close-to-close, the Parkinson, and the Garman-Klass estimators of one-period volatility.