Observatory · observe first
Edison International
EIX · United States · Electric Utilities · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.047%
12M weight contribution
-0.002 pp
3M weight contribution
+0.007 pp
12M price return
+33.1%
Share of matched S&P 500 members
Monthly observations through May 2026
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 |
|---|---|---|---|---|---|
| May 2026 | $26.9bn | 0.047% | -0.002 pp | +33.1% | Yes |
| Apr 2026 | $26.7bn | 0.036% | -0.013 pp | +37.6% | No |
| Mar 2026 | $28.2bn | 0.041% | -0.013 pp | +32.0% | No |
| Feb 2026 | $28.8bn | 0.039% | -0.007 pp | +45.9% | No |
| Jan 2026 | $24.0bn | 0.046% | -0.001 pp | +22.6% | Yes |
| Dec 2025 | $23.1bn | 0.045% | -0.025 pp | -20.4% | Yes |
| Nov 2025 | $22.7bn | 0.045% | -0.030 pp | -29.0% | Yes |
| Oct 2025 | $21.3bn | 0.042% | -0.033 pp | -28.9% | No |
| Sep 2025 | $21.3bn | 0.043% | -0.036 pp | -33.2% | No |
| Aug 2025 | $21.6bn | 0.045% | -0.036 pp | -32.1% | No |
| Jul 2025 | $20.1bn | 0.042% | -0.013 pp | -31.5% | No |
| Jun 2025 | $19.9bn | 0.043% | -0.009 pp | -24.8% | No |
| May 2025 | $21.4bn | 0.049% | -0.008 pp | -24.2% | No |
| Apr 2025 | $20.6bn | 0.049% | -0.030 pp | -21.2% | No |
| Mar 2025 | $22.7bn | 0.054% | -0.022 pp | -14.1% | No |
| Feb 2025 | $21.0bn | 0.047% | -0.028 pp | -16.5% | No |
| Jan 2025 | $20.9bn | 0.046% | -0.030 pp | -16.5% | No |
| Dec 2024 | $30.9bn | 0.070% | -0.012 pp | +15.2% | No |
| Nov 2024 | $34.0bn | 0.075% | -0.005 pp | +36.7% | Yes |
| Oct 2024 | $31.9bn | 0.075% | -0.007 pp | +36.3% | Yes |
| Sep 2024 | $33.6bn | 0.078% | -0.003 pp | +42.3% | Yes |
| Aug 2024 | $33.6bn | 0.081% | -0.003 pp | +32.2% | Yes |
| Jul 2024 | $30.9bn | 0.055% | -0.005 pp | +16.3% | No |
| Jun 2024 | $27.6bn | 0.052% | -0.010 pp | +8.1% | 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.