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
0.241%
12M weight contribution
+0.003 pp
3M weight contribution
-0.009 pp
12M price return
+1.2%
Share of matched S&P 500 members
Monthly observations through Feb 2023
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 2023 | $68.7bn | 0.241% | +0.003 pp | +1.2% | No |
| Jan 2023 | $73.7bn | 0.252% | +0.004 pp | +1.2% | No |
| Dec 2022 | $77.7bn | 0.281% | +0.048 pp | +8.2% | Yes |
| Nov 2022 | $73.6bn | 0.250% | +0.031 pp | +15.1% | No |
| Oct 2022 | $71.3bn | 0.253% | +0.033 pp | +9.2% | No |
| Sep 2022 | $72.3bn | 0.284% | +0.054 pp | +14.1% | No |
| Aug 2022 | $81.9bn | 0.293% | +0.060 pp | +21.9% | Yes |
| Jul 2022 | $81.7bn | 0.281% | +0.049 pp | +25.3% | Yes |
| Jun 2022 | $75.8bn | 0.295% | +0.069 pp | +22.7% | Yes |
| May 2022 | $80.4bn | 0.290% | +0.047 pp | +23.2% | Yes |
| Apr 2022 | $78.0bn | 0.282% | +0.028 pp | +15.5% | Yes |
| 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 |
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.