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
0.284%
12M weight contribution
+0.003 pp
3M weight contribution
+0.140 pp
12M price return
+11.4%
Share of matched S&P 500 members
Monthly observations through Mar 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 |
|---|---|---|---|---|---|
| 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 |
| Jan 2018 | $43.7bn | 0.249% | +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.