American Tower

AMT · United States · Telecom Tower REITs · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine

Historical observation

20182026

Universe weight

0.303%

12M weight contribution

-0.046 pp

3M weight contribution

+0.034 pp

12M price return

-2.5%

Share of matched S&P 500 members

Monthly observations through Nov 2023

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
Nov 2023	$97.3bn	0.303%	-0.046 pp	-2.5%	Yes
Oct 2023	$83.1bn	0.282%	-0.060 pp	-11.1%	Yes
Sep 2023	$76.7bn	0.256%	-0.137 pp	-21.1%	Yes
Aug 2023	$84.5bn	0.269%	-0.154 pp	-26.4%	Yes
Jul 2023	$88.7bn	0.193%	-0.240 pp	-27.6%	No
Jun 2023	$90.4bn	0.209%	-0.244 pp	-21.8%	No
May 2023	$86.0bn	0.212%	-0.209 pp	-25.9%	No
Apr 2023	$95.3bn	0.322%	-0.076 pp	-12.8%	No
Mar 2023	$95.2bn	0.325%	-0.061 pp	-16.5%	No
Feb 2023	$92.2bn	0.324%	-0.035 pp	-10.4%	No
Jan 2023	$104.0bn	0.356%	-0.029 pp	-8.8%	No
Dec 2022	$98.6bn	0.356%	-0.071 pp	-25.7%	No
Nov 2022	$103.0bn	0.350%	-0.054 pp	-13.7%	No
Oct 2022	$96.5bn	0.342%	-0.087 pp	-24.8%	No
Sep 2022	$100.0bn	0.393%	-0.031 pp	-17.8%	No
Aug 2022	$118.3bn	0.423%	-0.021 pp	-11.2%	Yes
Jul 2022	$126.1bn	0.433%	-0.008 pp	-2.2%	Yes
Jun 2022	$116.6bn	0.454%	+0.029 pp	-3.4%	Yes
May 2022	$116.9bn	0.421%	+0.014 pp	+2.3%	Yes
Apr 2022	$110.0bn	0.398%	-0.013 pp	-3.5%	Yes
Mar 2022	$114.5bn	0.385%	+0.178 pp	+7.2%	No
Feb 2022	$103.4bn	0.359%	+0.167 pp	+7.0%	No
Jan 2022	$114.5bn	0.385%	+0.143 pp	+12.8%	No
Dec 2021	$133.2bn	0.427%	+0.023 pp	+32.9%	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.