ONEOK (NYSE:OKE) has outperformed the market over the past 20 years by 2.21% on an annualized basis producing an average annual return of 10.56%. Currently, ONEOK has a market capitalization of $53.33 billion. Buying $1000 In OKE: If an investor had bought $1000 of OKE stock 20 years ago, it would be worth $7,428.46 today based on a price of $91.37 for OKE at the time of writing. ONEOK’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 growth over a perio…