Ametek

AME · United States · Electrical Components & Equipment · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine

Historical observation

20182026

Universe weight

0.101%

12M weight contribution

+0.101 pp

3M weight contribution

-0.008 pp

12M price return

+25.5%

Share of matched S&P 500 members

Monthly observations through Sep 2021

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 2021	$28.7bn	0.101%	+0.101 pp	+25.5%	No
Aug 2021	$31.4bn	0.105%	+0.105 pp	+35.9%	Yes
Jul 2021	$32.1bn	0.110%	+0.110 pp	+50.1%	Yes
Jun 2021	$30.8bn	0.109%	+0.109 pp	+50.4%	Yes
May 2021	$31.2bn	0.112%	+0.112 pp	+48.3%	Yes
Apr 2021	$31.1bn	0.113%	+0.005 pp	+62.0%	Yes
Mar 2021	$29.4bn	0.058%	+0.058 pp	+78.6%	No
Feb 2021	$27.2bn	0.054%	+0.054 pp	+38.2%	No
Jan 2021	$26.1bn	0.062%	-0.047 pp	+17.5%	No
Dec 2020	$27.8bn	0.113%	+0.001 pp	+22.2%	Yes
Nov 2020	$27.3bn	0.116%	+0.002 pp	+20.6%	Yes
Oct 2020	$22.6bn	0.107%	-0.002 pp	+8.0%	Yes
Sep 2020	$22.8bn	0.000%	-0.111 pp	+9.1%	No
Aug 2020	$23.1bn	0.000%	-0.107 pp	+18.0%	No
Jul 2020	$21.4bn	0.000%	-0.109 pp	+4.8%	No
Jun 2020	$20.5bn	0.000%	-0.111 pp	-0.9%	No
May 2020	$21.0bn	0.000%	-0.109 pp	+12.8%	No
Apr 2020	$19.2bn	0.108%	-0.004 pp	-4.2%	Yes
Mar 2020	$16.5bn	0.000%	-0.108 pp	-12.6%	No
Feb 2020	$19.7bn	0.000%	-0.105 pp	+8.8%	No
Jan 2020	$22.2bn	0.110%	+0.054 pp	+34.1%	No
Dec 2019	$22.8bn	0.112%	+0.056 pp	+48.3%	Yes
Nov 2019	$22.6bn	0.114%	+0.057 pp	+35.8%	Yes
Oct 2019	$20.9bn	0.109%	+0.056 pp	+37.6%	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.