Russell 2000 - 1990

The following graph plots the year-to-date performance of the index for 1990 compared to the probability calculated by a random walk model.

Initial Value: 168.31 Hist. Volatility: 0.41% Annual Drift: 7% Final Value: 132.2 Percentile: MIN
Click on the image for the high resolution version.

The high to date and low to date prices of the stock plotted against a random walk model for 1990 (what's this?).