NYSE:IRM | Market Cap | IRON MOUNTAIN INC

Historical market capitalization from contemporaneous retained split-adjusted close and filed split-adjusted shares outstanding.

Available history
2008-12-31 to 2026-09-03
Data captured

Historical Market Cap

DateMarket Cap
2026-09-03$34.24B
2026-07-24$38.2B
2026-06-30$37.6B
2026-04-24$34.52B
2026-03-31$30.38B
2026-02-06$28.34B
2025-12-31$24.54B
2025-10-31$30.43B
2025-09-30$30.12B
2025-08-01$27.8B
2025-06-30$30.29B
2025-04-25$25.88B
2025-03-31$25.38B
2025-02-07$31.15B
2024-12-31$30.86B
2024-11-01$35.56B
2024-09-30$34.87B
2024-07-26$28.89B
2024-06-30$26.29B
2024-04-26$22.72B
2024-03-31$23.51B
2024-02-16$19.87B
2023-12-31$20.44B
2023-10-27$17B
2023-09-30$17.36B
2023-07-28$17.67B
2023-06-30$16.58B
2023-04-28$16.11B
2023-03-31$15.43B
2023-02-17$15.3B
2022-12-31$14.5B
2022-10-28$14.56B
2022-09-30$12.78B
2022-07-29$14.1B
2022-06-30$14.15B
2022-04-22$16.47B
2022-03-31$16.1B
2022-02-18$12.47B
2021-12-31$15.16B
2021-10-29$13.22B
2021-09-30$12.58B
2021-07-30$12.67B
2021-06-30$12.25B
2021-04-30$11.58B
2021-03-31$10.69B
2021-02-19$9.28B
2020-12-31$8.5B
2020-10-30$7.51B
2020-09-30$7.72B
2020-07-31$8.12B
2020-06-30$7.52B
2020-05-01$6.79B
2020-03-31$6.85B
2020-02-07$9.15B
2019-12-31$9.16B
2019-10-25$9.79B
2019-09-30$9.3B
2019-07-26$8.59B
2019-06-30$8.99B
2019-04-19$10.31B
2019-03-31$10.17B
2019-02-08$10.46B
2018-12-31$9.28B
2018-10-19$9.21B
2018-09-30$9.88B
2018-07-20$10B
2018-06-30$10.02B
2018-04-20$9.53B
2018-03-31$9.4B
2018-02-09$9.44B
2017-12-31$10.68B
2017-10-20$10.92B
2017-09-30$10.38B
2017-07-21$9.25B
2017-06-30$9.08B
2017-04-21$9.6B
2017-03-31$9.42B
2017-02-17$9.8B
2016-12-31$8.56B
2016-10-28$8.65B
2016-09-30$9.89B
2016-07-29$10.85B
2016-06-30$10.48B
2016-04-22$7.54B
2016-03-31$7.19B
2016-02-19$6.12B
2015-12-31$5.71B
2015-10-23$6.56B
2015-09-30$6.55B
2015-07-24$6.56B
2015-06-30$6.53B
2015-04-24$7.69B
2015-03-31$7.68B
2015-02-20$7.71B
2014-12-31$8.11B
2014-10-24$6.9B
2014-09-30$6.32B
2014-07-25$6.08B
2014-06-30$6.32B
2014-04-25$4.9B