Observatory · observe first
Arthur J. Gallagher & Co.
AJG · United States · Insurance Brokers · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.090%
12M weight contribution
+0.014 pp
3M weight contribution
+0.003 pp
12M price return
+29.5%
Share of matched S&P 500 members
Monthly observations through Jul 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 |
|---|---|---|---|---|---|
| Jul 2019 | $16.8bn | 0.090% | +0.014 pp | +29.5% | Yes |
| Jun 2019 | $16.2bn | 0.087% | +0.015 pp | +37.1% | Yes |
| May 2019 | $15.6bn | 0.091% | +0.018 pp | +29.1% | Yes |
| Apr 2019 | $15.5bn | 0.086% | +0.008 pp | +22.2% | Yes |
| Mar 2019 | $14.4bn | 0.083% | +0.006 pp | +16.2% | Yes |
| Feb 2019 | $14.8bn | 0.086% | +0.011 pp | +19.5% | Yes |
| Jan 2019 | $13.7bn | 0.045% | -0.025 pp | +11.9% | No |
| Dec 2018 | $13.5bn | 0.048% | -0.022 pp | +10.4% | No |
| Nov 2018 | $14.2bn | 0.047% | -0.023 pp | +14.8% | No |
| Oct 2018 | $13.6bn | 0.046% | -0.024 pp | +10.3% | No |
| Sep 2018 | $13.6bn | 0.043% | -0.027 pp | +10.9% | No |
| Aug 2018 | $13.2bn | 0.043% | -0.028 pp | +6.9% | No |
| Jul 2018 | $13.0bn | 0.076% | +0.006 pp | +5.7% | Yes |
| Jun 2018 | $11.9bn | 0.072% | +0.002 pp | -3.3% | No |
| May 2018 | $12.1bn | 0.073% | +0.003 pp | -1.8% | No |
| Apr 2018 | $12.7bn | 0.078% | +0.008 pp | +3.1% | Yes |
| Mar 2018 | $12.5bn | 0.077% | +0.006 pp | +1.2% | Yes |
| Feb 2018 | $12.5bn | 0.075% | +0.005 pp | +1.2% | Yes |
| Jan 2018 | $12.4bn | 0.070% | +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.