Bid/ask is a highly
efficient
market distribution mechanism that
presents a constant moving target for traders. There
are 6 components to predicting price from the
spread: strong ask, neutral ask, weak ask, strong
bid, neutral bid and weak bid. Follow the tape with
a focus on these forces and you'll access excellent
short-term momentum data. When conditions create
volatility or imbalance, the spread widens and price
tends to surge farther on fewer shares. While this
movement can be nerve-wracking, it also provides
most of the profit potential the
day
trader is likely to encounter.