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
0.335%
12M weight contribution
+0.185 pp
3M weight contribution
+0.024 pp
12M price return
+54.8%
Share of matched S&P 500 members
Monthly observations through Jan 2020
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 |
|---|---|---|---|---|---|
| Jan 2020 | $67.9bn | 0.335% | +0.185 pp | +54.8% | Yes |
| Dec 2019 | $63.1bn | 0.310% | +0.166 pp | +62.3% | No |
| Nov 2019 | $61.2bn | 0.308% | +0.164 pp | +46.2% | Yes |
| Oct 2019 | $59.7bn | 0.311% | +0.164 pp | +43.0% | Yes |
| Sep 2019 | $57.1bn | 0.303% | +0.155 pp | +26.7% | Yes |
| Aug 2019 | $60.6bn | 0.330% | +0.171 pp | +27.0% | Yes |
| Jul 2019 | $57.1bn | 0.304% | +0.025 pp | +23.5% | Yes |
| Jun 2019 | $53.1bn | 0.286% | -0.008 pp | +12.9% | Yes |
| May 2019 | $49.8bn | 0.290% | +0.005 pp | +9.5% | Yes |
| Apr 2019 | $51.9bn | 0.289% | +0.014 pp | +18.2% | Yes |
| Mar 2019 | $49.5bn | 0.284% | +0.003 pp | +11.4% | Yes |
| Feb 2019 | $47.1bn | 0.273% | -0.003 pp | +5.6% | Yes |
| Jan 2019 | $45.5bn | 0.150% | -0.099 pp | +6.9% | Yes |
| Dec 2018 | $40.3bn | 0.144% | -0.105 pp | -5.2% | No |
| Nov 2018 | $43.4bn | 0.144% | -0.105 pp | +2.0% | No |
| Oct 2018 | $43.3bn | 0.147% | -0.102 pp | +1.4% | No |
| Sep 2018 | $46.5bn | 0.148% | -0.101 pp | +8.7% | No |
| Aug 2018 | $49.3bn | 0.159% | -0.090 pp | +15.2% | No |
| Jul 2018 | $47.7bn | 0.278% | +0.029 pp | +11.3% | No |
| Jun 2018 | $48.5bn | 0.294% | +0.045 pp | +13.2% | Yes |
| May 2018 | $47.0bn | 0.285% | +0.036 pp | +9.6% | Yes |
| Apr 2018 | $44.8bn | 0.276% | +0.026 pp | +4.4% | Yes |
| Mar 2018 | $45.9bn | 0.282% | +0.032 pp | +5.8% | Yes |
| Feb 2018 | $46.1bn | 0.276% | +0.027 pp | +6.2% | 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.