Automatic Data Processing (NASDAQ:ADP) has outperformed the market over the past 15 years by 2.41% on an annualized basis producing an average annual return of 13.94%. Currently, Automatic Data Processing has a market capitalization of $109.93 billion. Buying $1000 In ADP: If an investor had bought $1000 of ADP stock 15 years ago, it would be worth $7,130.76 today based on a price of $269.57 for ADP at the time of writing. Automatic Data Processing’s Performance Over Last 15 YearsFinally — what’s the point of all this? The key insight to take from this article is to note how much of a differe…