Observatory · observe first
Marsh McLennan
MRSH · United States · Insurance Brokers · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.144%
12M weight contribution
-0.100 pp
3M weight contribution
+0.011 pp
12M price return
-3.1%
Share of matched S&P 500 members
Monthly observations through Dec 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 |
|---|---|---|---|---|---|
| Dec 2018 | $40.2bn | 0.144% | -0.100 pp | -3.1% | No |
| Nov 2018 | $44.7bn | 0.148% | -0.095 pp | +7.8% | No |
| Oct 2018 | $42.7bn | 0.145% | -0.098 pp | +3.0% | No |
| Sep 2018 | $41.8bn | 0.133% | -0.110 pp | -0.0% | No |
| Aug 2018 | $42.7bn | 0.138% | -0.105 pp | +2.3% | No |
| Jul 2018 | $42.1bn | 0.246% | +0.002 pp | +0.8% | No |
| Jun 2018 | $41.6bn | 0.252% | +0.009 pp | -1.4% | Yes |
| May 2018 | $40.8bn | 0.248% | +0.004 pp | -3.3% | No |
| Apr 2018 | $41.4bn | 0.254% | +0.011 pp | -2.0% | Yes |
| Mar 2018 | $41.9bn | 0.257% | +0.014 pp | -1.1% | Yes |
| Feb 2018 | $42.1bn | 0.253% | +0.009 pp | -0.6% | Yes |
| Jan 2018 | $42.6bn | 0.243% | +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.