CoStar Gr (NASDAQ:CSGP) has outperformed the market over the past 20 years by 7.86% on an annualized basis producing an average annual return of 15.7%. Currently, CoStar Gr has a market capitalization of $32.36 billion. Buying $1000 In CSGP: If an investor had bought $1000 of CSGP stock 20 years ago, it would be worth $18,773.49 today based on a price of $79.23 for CSGP at the time of writing. CoStar Gr’s Performance Over Last 20 YearsFinally — what’s the point of all this? The key insight to take from this article is to note how much of a difference compounded returns can make in your cash g…