Observatory · observe first
American Electric Power
AEP · United States · Electric Utilities · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.111%
12M weight contribution
-0.082 pp
3M weight contribution
-0.096 pp
12M price return
+5.9%
Share of matched S&P 500 members
Monthly observations through Sep 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 |
|---|---|---|---|---|---|
| Sep 2018 | $34.9bn | 0.111% | -0.082 pp | +5.9% | No |
| Aug 2018 | $35.4bn | 0.114% | -0.079 pp | +7.2% | No |
| Jul 2018 | $35.1bn | 0.205% | +0.012 pp | +5.4% | Yes |
| Jun 2018 | $34.1bn | 0.207% | +0.014 pp | +2.6% | Yes |
| May 2018 | $33.5bn | 0.203% | +0.010 pp | +0.7% | Yes |
| Apr 2018 | $34.5bn | 0.212% | +0.019 pp | +2.7% | Yes |
| Mar 2018 | $33.7bn | 0.207% | +0.014 pp | +0.7% | Yes |
| Feb 2018 | $32.3bn | 0.193% | +0.000 pp | -3.7% | Yes |
| Jan 2018 | $33.8bn | 0.193% | +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.