American Electric Power

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

Historical time machine

Historical observation

20182026

Universe weight

0.144%

12M weight contribution

-0.024 pp

3M weight contribution

+0.001 pp

12M price return

+10.7%

Share of matched S&P 500 members

Monthly observations through Dec 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
Dec 2021	$44.8bn	0.144%	-0.024 pp	+10.7%	No
Nov 2021	$40.8bn	0.138%	-0.041 pp	-1.1%	No
Oct 2021	$42.7bn	0.143%	-0.069 pp	-2.5%	No
Sep 2021	$40.6bn	0.143%	+0.142 pp	+2.8%	No
Aug 2021	$44.8bn	0.150%	+0.150 pp	+17.6%	Yes
Jul 2021	$44.1bn	0.151%	+0.151 pp	+4.9%	Yes
Jun 2021	$42.3bn	0.149%	+0.149 pp	+9.9%	Yes
May 2021	$43.0bn	0.154%	+0.154 pp	+4.4%	Yes
Apr 2021	$44.3bn	0.161%	-0.069 pp	+10.5%	Yes
Mar 2021	$42.1bn	0.082%	+0.082 pp	+9.6%	No
Feb 2021	$37.2bn	0.074%	+0.074 pp	-13.2%	No
Jan 2021	$40.2bn	0.096%	-0.158 pp	-19.8%	No
Dec 2020	$41.3bn	0.167%	-0.062 pp	-9.0%	Yes
Nov 2020	$42.1bn	0.179%	-0.048 pp	-4.0%	Yes
Oct 2020	$44.6bn	0.211%	-0.032 pp	-1.7%	Yes
Sep 2020	$40.6bn	0.000%	-0.246 pp	-10.0%	No
Aug 2020	$39.1bn	0.000%	-0.245 pp	-10.7%	No
Jul 2020	$43.1bn	0.000%	-0.231 pp	+2.0%	No
Jun 2020	$39.5bn	0.000%	-0.234 pp	-6.7%	No
May 2020	$42.2bn	0.000%	-0.247 pp	+2.1%	No
Apr 2020	$41.1bn	0.230%	-0.005 pp	+0.1%	Yes
Mar 2020	$39.5bn	0.000%	-0.237 pp	-1.6%	No
Feb 2020	$44.1bn	0.000%	-0.232 pp	+13.3%	No
Jan 2020	$51.5bn	0.254%	+0.125 pp	+36.0%	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.