Observatory · observe first
Southern Company
SO · United States · Electric Utilities · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.259%
12M weight contribution
+0.130 pp
3M weight contribution
+0.026 pp
12M price return
+21.5%
Share of matched S&P 500 members
Monthly observations through Mar 2022
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 |
|---|---|---|---|---|---|
| Mar 2022 | $76.9bn | 0.259% | +0.130 pp | +21.5% | Yes |
| Feb 2022 | $68.7bn | 0.238% | +0.118 pp | +19.0% | Yes |
| Jan 2022 | $73.6bn | 0.248% | +0.099 pp | +22.9% | Yes |
| Dec 2021 | $72.7bn | 0.233% | -0.030 pp | +16.3% | Yes |
| Nov 2021 | $64.8bn | 0.219% | -0.050 pp | +6.4% | No |
| Oct 2021 | $66.0bn | 0.220% | -0.067 pp | +13.0% | No |
| Sep 2021 | $65.6bn | 0.230% | +0.230 pp | +19.1% | No |
| Aug 2021 | $69.6bn | 0.233% | +0.232 pp | +31.2% | Yes |
| Jul 2021 | $67.6bn | 0.232% | +0.232 pp | +22.0% | Yes |
| Jun 2021 | $64.1bn | 0.226% | +0.226 pp | +21.8% | Yes |
| May 2021 | $67.7bn | 0.242% | +0.242 pp | +16.9% | Yes |
| Apr 2021 | $70.0bn | 0.254% | -0.081 pp | +21.9% | Yes |
| Mar 2021 | $65.7bn | 0.128% | +0.128 pp | +20.0% | No |
| Feb 2021 | $59.9bn | 0.120% | +0.120 pp | -1.8% | No |
| Jan 2021 | $62.2bn | 0.149% | -0.215 pp | -12.7% | No |
| Dec 2020 | $64.9bn | 0.263% | -0.065 pp | +0.6% | Yes |
| Nov 2020 | $63.2bn | 0.268% | -0.059 pp | +0.7% | Yes |
| Oct 2020 | $60.7bn | 0.287% | -0.055 pp | -4.3% | Yes |
| Sep 2020 | $57.3bn | 0.000% | -0.343 pp | -8.4% | No |
| Aug 2020 | $55.1bn | 0.000% | -0.331 pp | -6.6% | No |
| Jul 2020 | $57.7bn | 0.000% | -0.312 pp | +1.3% | No |
| Jun 2020 | $54.8bn | 0.000% | -0.310 pp | -2.2% | No |
| May 2020 | $60.3bn | 0.000% | -0.324 pp | +11.2% | No |
| Apr 2020 | $59.9bn | 0.335% | +0.028 pp | +11.1% | 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.