Fastenal

FAST · United States · Trading Companies & Distributors · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine

Historical observation

20182026

Universe weight

0.091%

12M weight contribution

+0.038 pp

3M weight contribution

-0.027 pp

12M price return

-1.2%

Share of matched S&P 500 members

Monthly observations through Nov 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
Nov 2025	$46.4bn	0.091%	+0.038 pp	-1.2%	No
Oct 2025	$47.2bn	0.093%	+0.040 pp	+7.5%	Yes
Sep 2025	$56.3bn	0.113%	+0.065 pp	+40.2%	Yes
Aug 2025	$57.0bn	0.118%	+0.071 pp	+48.5%	Yes
Jul 2025	$52.9bn	0.112%	+0.075 pp	+33.2%	Yes
Jun 2025	$24.1bn	0.052%	+0.018 pp	+36.6%	Yes
May 2025	$23.7bn	0.054%	+0.018 pp	+28.1%	Yes
Apr 2025	$23.2bn	0.056%	-0.001 pp	+21.8%	Yes
Mar 2025	$22.2bn	0.053%	-0.008 pp	+2.8%	Yes
Feb 2025	$21.7bn	0.049%	-0.011 pp	+6.1%	No
Jan 2025	$21.0bn	0.047%	-0.011 pp	+9.8%	No
Dec 2024	$20.6bn	0.047%	-0.008 pp	+13.5%	No
Nov 2024	$23.9bn	0.053%	-0.001 pp	+43.4%	Yes
Oct 2024	$22.4bn	0.053%	-0.004 pp	+37.9%	Yes
Sep 2024	$20.4bn	0.048%	-0.005 pp	+34.6%	Yes
Aug 2024	$19.6bn	0.047%	-0.005 pp	+22.1%	Yes
Jul 2024	$20.3bn	0.036%	-0.000 pp	+24.3%	No
Jun 2024	$18.0bn	0.034%	-0.005 pp	+9.7%	No
May 2024	$18.9bn	0.036%	-0.002 pp	+26.2%	No
Apr 2024	$19.4bn	0.056%	+0.004 pp	+30.0%	No
Mar 2024	$22.1bn	0.061%	+0.009 pp	+47.4%	Yes
Feb 2024	$20.9bn	0.060%	+0.008 pp	+46.0%	Yes
Jan 2024	$19.5bn	0.058%	+0.008 pp	+40.1%	Yes
Dec 2023	$18.5bn	0.055%	+0.006 pp	+41.3%	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.