3M

MMM · United States · Industrial Conglomerates · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine

Historical observation

20182026

Universe weight

0.167%

12M weight contribution

+0.007 pp

3M weight contribution

+0.001 pp

12M price return

+26.4%

Share of matched S&P 500 members

Monthly observations through Dec 2025

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 2025	$85.0bn	0.167%	+0.007 pp	+26.4%	No
Nov 2025	$91.4bn	0.180%	+0.019 pp	+31.3%	Yes
Oct 2025	$88.4bn	0.173%	+0.009 pp	+32.2%	Yes
Sep 2025	$82.7bn	0.165%	-0.009 pp	+15.8%	No
Aug 2025	$82.8bn	0.172%	-0.007 pp	+17.8%	No
Jul 2025	$79.5bn	0.168%	+0.042 pp	+19.4%	No
Jun 2025	$81.9bn	0.177%	+0.071 pp	+52.1%	No
May 2025	$79.8bn	0.181%	+0.075 pp	+51.2%	Yes
Apr 2025	$74.8bn	0.180%	+0.025 pp	+47.2%	Yes
Mar 2025	$79.7bn	0.189%	+0.053 pp	+69.4%	Yes
Feb 2025	$84.2bn	0.188%	+0.066 pp	+106.0%	Yes
Jan 2025	$82.9bn	0.184%	+0.055 pp	+99.6%	Yes
Dec 2024	$70.3bn	0.159%	+0.009 pp	+46.1%	No
Nov 2024	$72.7bn	0.160%	+0.018 pp	+66.8%	Yes
Oct 2024	$70.0bn	0.164%	+0.022 pp	+76.6%	Yes
Sep 2024	$75.1bn	0.175%	+0.031 pp	+82.6%	Yes
Aug 2024	$74.0bn	0.179%	+0.022 pp	+57.9%	Yes
Jul 2024	$70.1bn	0.126%	+0.013 pp	+44.4%	Yes
Jun 2024	$56.5bn	0.106%	-0.001 pp	+28.9%	No
May 2024	$55.4bn	0.106%	-0.000 pp	+35.5%	No
Apr 2024	$53.4bn	0.155%	-0.011 pp	+15.6%	Yes
Mar 2024	$49.0bn	0.136%	-0.029 pp	+7.4%	No
Feb 2024	$42.6bn	0.122%	-0.052 pp	-9.0%	No
Jan 2024	$43.6bn	0.130%	-0.052 pp	-13.1%	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.