Iron Mountain (NYSE:IRM) has outperformed the market over the past 10 years by 1.35% on an annualized basis producing an average annual return of 11.73%. Currently, Iron Mountain has a market capitalization of $32.13 billion. Buying $100 In IRM: If an investor had bought $100 of IRM stock 10 years ago, it would be worth $304.40 today based on a price of $109.52 for IRM at the time of writing. Iron Mountain’s Performance Over Last 10 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 cas…