West Pharmaceutical Services Inc. - 1997  (Inactive Symbol)

The following graph plots the year-to-date performance of the stock for 1997 compared to the probability calculated by a random walk model.

Initial Value*: $4.9 Hist. Volatility: 0.83% Annual Drift: 7% Final Value*: $5.3 Percentile: 53%
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 1997 (what's this?).