Amgen

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

Historical time machine

Historical observation

20182026

Universe weight

0.387%

12M weight contribution

+0.066 pp

3M weight contribution

+0.072 pp

12M price return

+53.6%

Share of matched S&P 500 members

Monthly observations through Aug 2026

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
Aug 2026	$232.4bn	0.387%	+0.066 pp	+53.6%	Yes
Jul 2026	$207.9bn	0.363%	+0.028 pp	+34.4%	Yes
Jun 2026	$195.4bn	0.340%	+0.016 pp	+33.6%	Yes
May 2026	$181.8bn	0.315%	-0.036 pp	+20.4%	Yes
Apr 2026	$186.7bn	0.253%	-0.122 pp	+22.8%	No
Mar 2026	$189.7bn	0.276%	-0.121 pp	+16.5%	No
Feb 2026	$209.2bn	0.287%	-0.083 pp	+30.0%	No
Jan 2026	$184.1bn	0.352%	+0.011 pp	+23.7%	Yes
Dec 2025	$176.3bn	0.345%	+0.028 pp	+29.7%	Yes
Nov 2025	$186.0bn	0.365%	+0.030 pp	+26.1%	Yes
Oct 2025	$160.7bn	0.315%	-0.090 pp	-3.7%	No
Sep 2025	$151.9bn	0.304%	-0.099 pp	-9.5%	No
Aug 2025	$154.9bn	0.321%	-0.112 pp	-10.9%	No
Jul 2025	$158.7bn	0.335%	+0.015 pp	-8.4%	No
Jun 2025	$150.1bn	0.324%	+0.010 pp	-7.8%	No
May 2025	$155.0bn	0.351%	+0.037 pp	-2.7%	No
Apr 2025	$156.3bn	0.375%	-0.050 pp	+9.4%	Yes
Mar 2025	$167.4bn	0.397%	-0.025 pp	+12.9%	Yes
Feb 2025	$165.5bn	0.370%	-0.050 pp	+15.9%	Yes
Jan 2025	$153.4bn	0.341%	-0.159 pp	-6.4%	No
Dec 2024	$140.1bn	0.318%	-0.142 pp	-6.8%	No
Nov 2024	$152.1bn	0.336%	-0.114 pp	+8.1%	No
Oct 2024	$172.1bn	0.404%	-0.061 pp	+29.0%	Yes
Sep 2024	$173.1bn	0.403%	-0.077 pp	+23.5%	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.