Observatory · observe first
S&P Global
SPGI · United States · Financial Exchanges & Data · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.394%
12M weight contribution
+0.021 pp
3M weight contribution
+0.026 pp
12M price return
+32.8%
Share of matched S&P 500 members
Monthly observations through Dec 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 |
|---|---|---|---|---|---|
| Dec 2023 | $132.0bn | 0.394% | +0.021 pp | +32.8% | Yes |
| Nov 2023 | $124.6bn | 0.389% | +0.020 pp | +19.0% | Yes |
| Oct 2023 | $105.2bn | 0.357% | +0.006 pp | +9.8% | Yes |
| Sep 2023 | $110.0bn | 0.367% | -0.011 pp | +20.9% | Yes |
| Aug 2023 | $117.7bn | 0.375% | -0.023 pp | +12.1% | Yes |
| Jul 2023 | $118.8bn | 0.259% | -0.158 pp | +5.7% | No |
| Jun 2023 | $121.7bn | 0.281% | -0.140 pp | +20.1% | No |
| May 2023 | $111.5bn | 0.275% | -0.129 pp | +6.2% | No |
| Apr 2023 | $110.0bn | 0.372% | +0.061 pp | -2.8% | No |
| Mar 2023 | $105.0bn | 0.358% | +0.043 pp | -15.1% | No |
| Feb 2023 | $103.9bn | 0.365% | +0.068 pp | -8.3% | No |
| Jan 2023 | $115.6bn | 0.395% | +0.077 pp | -8.9% | Yes |
| Dec 2022 | $103.2bn | 0.373% | +0.028 pp | -28.4% | No |
| Nov 2022 | $108.7bn | 0.369% | +0.018 pp | -21.9% | No |
| Oct 2022 | $99.0bn | 0.351% | -0.010 pp | -31.7% | No |
| Sep 2022 | $96.3bn | 0.379% | +0.038 pp | -27.5% | No |
| Aug 2022 | $111.1bn | 0.398% | +0.059 pp | -20.0% | Yes |
| Jul 2022 | $121.2bn | 0.417% | +0.081 pp | -11.4% | Yes |
| Jun 2022 | $108.4bn | 0.422% | +0.091 pp | -17.2% | Yes |
| May 2022 | $112.4bn | 0.405% | +0.095 pp | -7.2% | Yes |
| Apr 2022 | $85.9bn | 0.311% | -0.012 pp | -2.8% | No |
| Mar 2022 | $93.6bn | 0.315% | +0.158 pp | +17.1% | No |
| Feb 2022 | $85.7bn | 0.297% | +0.147 pp | +14.9% | No |
| Jan 2022 | $94.7bn | 0.318% | +0.146 pp | +32.0% | 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.