Amphenol

APH · United States · Electronic Components · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine

Historical observation

20182026

Universe weight

0.163%

12M weight contribution

+0.025 pp

3M weight contribution

+0.004 pp

12M price return

+46.6%

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	$97.7bn	0.163%	+0.025 pp	+46.6%	Yes
Jul 2026	$99.1bn	0.173%	+0.036 pp	+51.9%	Yes
Jun 2026	$108.5bn	0.188%	+0.060 pp	+79.8%	Yes
May 2026	$91.5bn	0.159%	+0.035 pp	+66.6%	Yes
Apr 2026	$90.5bn	0.123%	+0.011 pp	+92.7%	No
Mar 2026	$77.7bn	0.113%	+0.019 pp	+94.0%	No
Feb 2026	$89.8bn	0.123%	+0.033 pp	+121.0%	No
Jan 2026	$88.2bn	0.169%	+0.074 pp	+105.1%	Yes
Dec 2025	$82.7bn	0.162%	+0.067 pp	+96.1%	Yes
Nov 2025	$86.2bn	0.169%	+0.073 pp	+95.5%	Yes
Oct 2025	$85.3bn	0.167%	+0.072 pp	+109.6%	Yes
Sep 2025	$75.5bn	0.151%	+0.060 pp	+91.4%	Yes
Aug 2025	$66.5bn	0.138%	+0.040 pp	+62.9%	Yes
Jul 2025	$65.0bn	0.137%	+0.068 pp	+67.3%	Yes
Jun 2025	$59.7bn	0.129%	+0.091 pp	+47.9%	Yes
May 2025	$54.4bn	0.123%	+0.085 pp	+37.1%	Yes
Apr 2025	$46.5bn	0.112%	+0.059 pp	+28.6%	Yes
Mar 2025	$39.7bn	0.094%	+0.046 pp	+14.7%	No
Feb 2025	$40.3bn	0.090%	+0.043 pp	+23.0%	No
Jan 2025	$42.7bn	0.095%	+0.050 pp	+41.2%	No
Dec 2024	$41.9bn	0.095%	+0.051 pp	+41.3%	Yes
Nov 2024	$43.8bn	0.097%	+0.054 pp	+61.0%	Yes
Oct 2024	$40.4bn	0.095%	+0.054 pp	+67.8%	Yes
Sep 2024	$39.2bn	0.091%	+0.050 pp	+56.5%	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.