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
0.046%
12M weight contribution
-0.024 pp
3M weight contribution
-0.030 pp
12M price return
+10.3%
Share of matched S&P 500 members
Monthly observations through Oct 2018
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 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.