Observatory · observe first
Iron Mountain
IRM · United States · Other Specialized REITs · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.035%
12M weight contribution
-0.018 pp
3M weight contribution
+0.005 pp
12M price return
+13.8%
Share of matched S&P 500 members
Monthly observations through Jan 2019
Company price index
A separate dimension from market allocation
Historical observations
Most recent 24 observations at or before the selected month
| Month | Market cap | Universe weight | 12M weight change | 12M return | Above 6M weight average |
|---|---|---|---|---|---|
| Jan 2019 | $10.6bn | 0.035% | -0.018 pp | +13.8% | Yes |
| Dec 2018 | $9.3bn | 0.033% | -0.020 pp | -0.9% | No |
| Nov 2018 | $9.7bn | 0.032% | -0.021 pp | +2.1% | No |
| Oct 2018 | $8.8bn | 0.030% | -0.024 pp | -8.0% | No |
| Sep 2018 | $9.9bn | 0.031% | -0.022 pp | +3.7% | No |
| Aug 2018 | $10.3bn | 0.033% | -0.020 pp | +6.7% | No |
| Jul 2018 | $10.0bn | 0.059% | +0.005 pp | +3.8% | Yes |
| Jun 2018 | $10.0bn | 0.061% | +0.007 pp | +3.5% | Yes |
| May 2018 | $9.5bn | 0.058% | +0.004 pp | -3.3% | Yes |
| Apr 2018 | $9.7bn | 0.060% | +0.006 pp | -1.4% | Yes |
| Mar 2018 | $9.4bn | 0.058% | +0.004 pp | -4.5% | Yes |
| Feb 2018 | $9.0bn | 0.054% | +0.000 pp | -10.2% | Yes |
| Jan 2018 | $9.4bn | 0.053% | +0.000 pp | +0.0% | No |
Its weight is estimated market cap divided by the total estimated market cap of matched S&P 500 members for the month. This is not an official float-adjusted S&P index weight.