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
0.128%
12M weight contribution
-0.030 pp
3M weight contribution
-0.002 pp
12M price return
+1.0%
Share of matched S&P 500 members
Monthly observations through Feb 2024
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 |
|---|---|---|---|---|---|
| Feb 2024 | $44.8bn | 0.128% | -0.030 pp | +1.0% | Yes |
| Jan 2024 | $41.1bn | 0.122% | -0.043 pp | -13.4% | No |
| Dec 2023 | $42.7bn | 0.127% | -0.049 pp | -11.0% | Yes |
| Nov 2023 | $41.8bn | 0.130% | -0.038 pp | -14.5% | Yes |
| Oct 2023 | $38.9bn | 0.132% | -0.028 pp | -10.8% | Yes |
| Sep 2023 | $38.8bn | 0.129% | -0.045 pp | -9.6% | Yes |
| Aug 2023 | $40.4bn | 0.129% | -0.056 pp | -18.7% | Yes |
| Jul 2023 | $43.7bn | 0.095% | -0.079 pp | -10.9% | No |
| Jun 2023 | $43.3bn | 0.100% | -0.091 pp | -9.1% | No |
| May 2023 | $42.8bn | 0.106% | -0.083 pp | -15.6% | No |
| Apr 2023 | $47.5bn | 0.160% | -0.024 pp | -3.5% | No |
| Mar 2023 | $46.8bn | 0.160% | -0.010 pp | -5.6% | No |
| Feb 2023 | $45.2bn | 0.159% | +0.000 pp | +0.4% | No |
| Jan 2023 | $48.3bn | 0.165% | +0.012 pp | +7.5% | No |
| Dec 2022 | $48.8bn | 0.176% | +0.033 pp | +10.4% | Yes |
| Nov 2022 | $49.7bn | 0.169% | +0.031 pp | +23.5% | No |
| Oct 2022 | $45.2bn | 0.160% | +0.018 pp | +7.3% | No |
| Sep 2022 | $44.4bn | 0.175% | +0.032 pp | +10.1% | No |
| Aug 2022 | $51.5bn | 0.184% | +0.034 pp | +15.7% | Yes |
| Jul 2022 | $50.6bn | 0.174% | +0.023 pp | +15.7% | No |
| Jun 2022 | $49.3bn | 0.192% | +0.042 pp | +17.4% | Yes |
| May 2022 | $52.4bn | 0.189% | +0.035 pp | +22.8% | Yes |
| Apr 2022 | $50.9bn | 0.184% | +0.023 pp | +15.7% | Yes |
| Mar 2022 | $50.3bn | 0.169% | +0.087 pp | +22.0% | 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.