Williams-Sonoma (NYSE:WSM) has outperformed the market over the past 20 years by 2.71% on an annualized basis producing an average annual return of 11.23%. Currently, Williams-Sonoma has a market capitalization of $18.90 billion. Buying $100 In WSM: If an investor had bought $100 of WSM stock 20 years ago, it would be worth $826.17 today based on a price of $149.62 for WSM at the time of writing. Williams-Sonoma’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 yo…