For a while, I used to maintain a table of measures related to Apple that were in four categories: Finance, Products, Expectations, Market Landscape. Each attributes had his own ponderation. I wold give a scope from 0 to 10 on each of them. A formula would calculate something call the Health Index. I would revisit this table four times a year. It was obviously totally subjective but it was fun to do. Today, their score would be 9.140 out of 10. Not bad.