Observatory · observe first
American Tower
AMT · United States · Telecom Tower REITs · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.386%
12M weight contribution
+0.025 pp
3M weight contribution
-0.007 pp
12M price return
-1.3%
Share of matched S&P 500 members
Monthly observations through Jun 2018
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 |
|---|---|---|---|---|---|
| Jun 2018 | $63.7bn | 0.386% | +0.025 pp | -1.3% | Yes |
| May 2018 | $61.1bn | 0.371% | +0.010 pp | -5.8% | No |
| Apr 2018 | $60.1bn | 0.369% | +0.008 pp | -7.2% | No |
| Mar 2018 | $64.1bn | 0.393% | +0.032 pp | -1.6% | Yes |
| Feb 2018 | $61.4bn | 0.368% | +0.007 pp | -5.7% | Yes |
| Jan 2018 | $63.3bn | 0.361% | +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.