Observatory · observe first
General Motors
GM · United States · Automobile Manufacturers · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.126%
12M weight contribution
-0.005 pp
3M weight contribution
+0.019 pp
12M price return
+37.6%
Share of matched S&P 500 members
Monthly observations through Oct 2025
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 |
|---|---|---|---|---|---|
| Oct 2025 | $64.5bn | 0.126% | -0.005 pp | +37.6% | Yes |
| Sep 2025 | $58.0bn | 0.116% | -0.001 pp | +37.4% | Yes |
| Aug 2025 | $55.8bn | 0.116% | -0.020 pp | +18.9% | Yes |
| Jul 2025 | $50.8bn | 0.107% | +0.018 pp | +21.6% | No |
| Jun 2025 | $47.3bn | 0.102% | +0.003 pp | +7.0% | No |
| May 2025 | $47.7bn | 0.108% | +0.010 pp | +11.4% | No |
| Apr 2025 | $45.0bn | 0.108% | -0.039 pp | +2.6% | No |
| Mar 2025 | $46.8bn | 0.111% | -0.034 pp | +4.7% | No |
| Feb 2025 | $48.9bn | 0.109% | -0.026 pp | +20.8% | No |
| Jan 2025 | $49.2bn | 0.109% | -0.024 pp | +28.8% | No |
| Dec 2024 | $58.6bn | 0.133% | -0.014 pp | +49.8% | Yes |
| Nov 2024 | $61.1bn | 0.135% | -0.000 pp | +77.3% | Yes |
| Oct 2024 | $55.8bn | 0.131% | -0.000 pp | +82.0% | Yes |
| Sep 2024 | $50.4bn | 0.117% | -0.034 pp | +37.5% | Yes |
| Aug 2024 | $55.9bn | 0.135% | -0.012 pp | +49.8% | Yes |
| Jul 2024 | $49.8bn | 0.089% | -0.026 pp | +16.8% | No |
| Jun 2024 | $53.0bn | 0.099% | -0.025 pp | +21.8% | No |
| May 2024 | $51.3bn | 0.098% | -0.013 pp | +40.4% | No |
| Apr 2024 | $50.8bn | 0.147% | -0.008 pp | +36.3% | Yes |
| Mar 2024 | $52.4bn | 0.145% | -0.029 pp | +25.0% | Yes |
| Feb 2024 | $47.3bn | 0.136% | -0.054 pp | +7.2% | No |
| Jan 2024 | $44.8bn | 0.133% | -0.054 pp | -0.3% | No |
| Dec 2023 | $49.2bn | 0.147% | -0.026 pp | +7.9% | Yes |
| Nov 2023 | $43.3bn | 0.135% | -0.061 pp | -21.1% | 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.