Merck & Co.

MRK · United States · Pharmaceuticals · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine

Historical observation

20182026

Universe weight

1.092%

12M weight contribution

+0.519 pp

3M weight contribution

-0.018 pp

12M price return

+21.9%

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	$205.7bn	1.092%	+0.519 pp	+21.9%	No
Aug 2019	$211.3bn	1.149%	+0.587 pp	+29.5%	Yes
Jul 2019	$203.9bn	1.085%	+0.099 pp	+29.5%	No
Jun 2019	$206.0bn	1.110%	+0.165 pp	+41.9%	Yes
May 2019	$194.6bn	1.133%	+0.206 pp	+36.9%	Yes
Apr 2019	$193.9bn	1.080%	+0.149 pp	+37.5%	Yes
Mar 2019	$204.8bn	1.177%	+0.317 pp	+57.1%	Yes
Feb 2019	$200.2bn	1.161%	+0.325 pp	+54.5%	Yes
Jan 2019	$184.7bn	0.609%	-0.269 pp	+29.5%	No
Dec 2018	$189.6bn	0.678%	-0.201 pp	+32.9%	No
Nov 2018	$196.9bn	0.654%	-0.225 pp	+37.1%	No
Oct 2018	$186.8bn	0.633%	-0.245 pp	+27.2%	No
Sep 2018	$180.0bn	0.574%	-0.305 pp	+22.5%	No
Aug 2018	$174.1bn	0.562%	-0.317 pp	+17.7%	No
Jul 2018	$169.1bn	0.986%	+0.108 pp	+13.0%	Yes
Jun 2018	$155.8bn	0.945%	+0.067 pp	+4.1%	Yes
May 2018	$152.8bn	0.927%	+0.049 pp	+1.4%	Yes
Apr 2018	$151.5bn	0.931%	+0.052 pp	+0.2%	Yes
Mar 2018	$140.1bn	0.860%	-0.019 pp	-7.3%	Yes
Feb 2018	$139.5bn	0.836%	-0.043 pp	-8.5%	No
Jan 2018	$154.0bn	0.879%	+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.