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

0.269%

12M weight contribution

+0.136 pp

3M weight contribution

-0.004 pp

12M price return

+23.3%

Share of matched S&P 500 members

Monthly observations through Sep 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
Sep 2019	$50.7bn	0.269%	+0.136 pp	+23.3%	No
Aug 2019	$50.6bn	0.275%	+0.137 pp	+20.3%	Yes
Jul 2019	$50.1bn	0.267%	+0.021 pp	+20.8%	No
Jun 2019	$50.6bn	0.273%	+0.020 pp	+24.1%	Yes
May 2019	$48.5bn	0.282%	+0.035 pp	+21.3%	Yes
Apr 2019	$47.8bn	0.266%	+0.012 pp	+17.9%	Yes
Mar 2019	$47.4bn	0.272%	+0.015 pp	+15.9%	Yes
Feb 2019	$47.0bn	0.272%	+0.020 pp	+14.3%	Yes
Jan 2019	$44.4bn	0.147%	-0.097 pp	+7.7%	Yes
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.