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
0.328%
12M weight contribution
+0.166 pp
3M weight contribution
-0.004 pp
12M price return
+36.9%
Share of matched S&P 500 members
Monthly observations through Nov 2019
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 |
|---|---|---|---|---|---|
| Nov 2019 | $65.0bn | 0.328% | +0.166 pp | +36.9% | No |
| Oct 2019 | $65.7bn | 0.343% | +0.188 pp | +45.9% | Yes |
| Sep 2019 | $64.6bn | 0.343% | +0.202 pp | +48.6% | Yes |
| Aug 2019 | $60.9bn | 0.331% | +0.188 pp | +39.5% | Yes |
| Jul 2019 | $58.7bn | 0.313% | +0.026 pp | +21.5% | Yes |
| Jun 2019 | $57.5bn | 0.310% | +0.026 pp | +25.4% | Yes |
| May 2019 | $55.7bn | 0.324% | +0.049 pp | +25.2% | Yes |
| Apr 2019 | $55.1bn | 0.307% | +0.021 pp | +21.5% | Yes |
| Mar 2019 | $53.5bn | 0.307% | +0.031 pp | +21.9% | Yes |
| Feb 2019 | $51.4bn | 0.298% | +0.038 pp | +21.5% | Yes |
| Jan 2019 | $50.0bn | 0.165% | -0.093 pp | +13.5% | Yes |
| Dec 2018 | $45.2bn | 0.162% | -0.097 pp | +2.6% | No |
| Nov 2018 | $48.7bn | 0.162% | -0.096 pp | +10.6% | No |
| Oct 2018 | $45.7bn | 0.155% | -0.103 pp | +3.9% | No |
| Sep 2018 | $44.2bn | 0.141% | -0.117 pp | +0.6% | No |
| Aug 2018 | $44.4bn | 0.143% | -0.115 pp | +1.0% | No |
| Jul 2018 | $49.2bn | 0.287% | +0.029 pp | +10.7% | Yes |
| Jun 2018 | $46.8bn | 0.284% | +0.026 pp | +5.5% | Yes |
| May 2018 | $45.4bn | 0.276% | +0.017 pp | +2.3% | Yes |
| Apr 2018 | $46.5bn | 0.286% | +0.027 pp | +3.6% | Yes |
| Mar 2018 | $45.0bn | 0.276% | +0.018 pp | +0.3% | Yes |
| Feb 2018 | $43.4bn | 0.260% | +0.002 pp | -3.3% | Yes |
| Jan 2018 | $45.3bn | 0.258% | +0.000 pp | +0.0% | 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.