Iron Mountain Inc. Real Estate | S&P 500 | IRM | | 2019 - 221,148 2020 - 187,413 2021 - 196,671 Fluctuating | 2019 - 1,533,552 2020 - 1,486,012 2021 - 1,581,434 Fluctuating | 2019 - 9,399 2020 - 8,605 2021 - 10,484 Fluctuating | 2019 - 924,515 2020 - 1,007,077 2021 - 1,105,168 20% | 2019 - No data 2020 - No data 2021 - No data No data | 2019 - 1.2 2020 - 1 2021 - 1.1 Fluctuating |