Ameren

AEE · United States · Multi-Utilities · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine

Historical observation

20182026

Universe weight

0.078%

12M weight contribution

-0.015 pp

3M weight contribution

+0.078 pp

12M price return

+4.3%

Share of matched S&P 500 members

Monthly observations through Dec 2020

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 2020	$19.3bn	0.078%	-0.015 pp	+4.3%	Yes
Nov 2020	$19.2bn	0.082%	-0.010 pp	+7.3%	Yes
Oct 2020	$20.0bn	0.095%	-0.005 pp	+7.1%	Yes
Sep 2020	$19.5bn	0.000%	-0.104 pp	+1.3%	No
Aug 2020	$19.5bn	0.000%	-0.103 pp	+5.2%	No
Jul 2020	$19.8bn	0.000%	-0.099 pp	+8.7%	No
Jun 2020	$17.4bn	0.000%	-0.099 pp	-3.9%	No
May 2020	$18.5bn	0.000%	-0.105 pp	+4.5%	No
Apr 2020	$17.9bn	0.100%	+0.001 pp	+2.5%	Yes
Mar 2020	$17.9bn	0.000%	-0.103 pp	+1.6%	No
Feb 2020	$19.5bn	0.000%	-0.101 pp	+13.8%	No
Jan 2020	$20.2bn	0.100%	+0.044 pp	+21.4%	Yes
Dec 2019	$18.9bn	0.093%	+0.036 pp	+20.8%	No
Nov 2019	$18.3bn	0.092%	+0.036 pp	+11.2%	No
Oct 2019	$19.1bn	0.100%	+0.046 pp	+23.5%	No
Sep 2019	$19.7bn	0.105%	+0.055 pp	+29.9%	Yes
Aug 2019	$19.0bn	0.103%	+0.053 pp	+25.3%	Yes
Jul 2019	$18.6bn	0.099%	+0.011 pp	+25.2%	No
Jun 2019	$18.4bn	0.099%	+0.009 pp	+26.8%	Yes
May 2019	$18.0bn	0.105%	+0.017 pp	+27.5%	Yes
Apr 2019	$17.8bn	0.099%	+0.012 pp	+27.7%	Yes
Mar 2019	$18.0bn	0.103%	+0.019 pp	+33.6%	Yes
Feb 2019	$17.4bn	0.101%	+0.022 pp	+35.2%	Yes
Jan 2019	$16.9bn	0.056%	-0.023 pp	+26.2%	Yes

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.