File:Logglidepath.jpg

This graph shows two variable stock allocations based on age. The age range for the graph is age 20 to 100.

The blue line shows a stock allocation often mentioned by Jack Bogle which decreases the stock allocation along a linear path based on the formula: stock percentage=(100-age)

The red line shows a stock allocation which decreases with age along a non-linear glide-path slope that decreases stock percentage slowly during the earlier years and then decreases more quickly during later retired years, eventually going to 100% bonds. This glide-path is based on the formula: stock percentage=LOG(100-age)-1