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
0.230%
12M weight contribution
-0.005 pp
3M weight contribution
-0.024 pp
12M price return
+0.1%
Share of matched S&P 500 members
Monthly observations through Apr 2020
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 |
|---|---|---|---|---|---|
| Apr 2020 | $41.1bn | 0.230% | -0.005 pp | +0.1% | Yes |
| Mar 2020 | $39.5bn | 0.000% | -0.237 pp | -1.6% | No |
| Feb 2020 | $44.1bn | 0.000% | -0.232 pp | +13.3% | No |
| Jan 2020 | $51.5bn | 0.254% | +0.125 pp | +36.0% | Yes |
| Dec 2019 | $46.7bn | 0.229% | +0.097 pp | +30.5% | No |
| Nov 2019 | $45.1bn | 0.227% | +0.100 pp | +21.3% | No |
| Oct 2019 | $46.6bn | 0.243% | +0.120 pp | +33.0% | Yes |
| Sep 2019 | $46.3bn | 0.246% | +0.134 pp | +36.6% | Yes |
| Aug 2019 | $45.0bn | 0.245% | +0.131 pp | +31.3% | Yes |
| Jul 2019 | $43.4bn | 0.231% | +0.026 pp | +27.7% | No |
| Jun 2019 | $43.4bn | 0.234% | +0.027 pp | +31.5% | Yes |
| May 2019 | $42.5bn | 0.247% | +0.044 pp | +31.2% | Yes |
| Apr 2019 | $42.2bn | 0.235% | +0.023 pp | +26.7% | Yes |
| Mar 2019 | $41.3bn | 0.237% | +0.030 pp | +26.5% | Yes |
| Feb 2019 | $40.0bn | 0.232% | +0.039 pp | +28.2% | Yes |
| Jan 2019 | $39.0bn | 0.129% | -0.064 pp | +19.3% | Yes |
| Dec 2018 | $36.9bn | 0.132% | -0.061 pp | +12.7% | No |
| Nov 2018 | $38.3bn | 0.127% | -0.066 pp | +17.2% | No |
| Oct 2018 | $36.2bn | 0.123% | -0.070 pp | +9.7% | No |
| 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 |
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.