Southwest Airlines

LUV · United States · Passenger Airlines · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine

Historical observation

20182026

Universe weight

0.157%

12M weight contribution

+0.064 pp

3M weight contribution

+0.010 pp

12M price return

+15.8%

Share of matched S&P 500 members

Monthly observations through Oct 2019

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
Oct 2019	$30.2bn	0.157%	+0.064 pp	+15.8%	Yes
Sep 2019	$29.0bn	0.154%	+0.040 pp	-12.4%	Yes
Aug 2019	$28.1bn	0.153%	+0.040 pp	-13.5%	No
Jul 2019	$27.7bn	0.147%	-0.049 pp	-10.3%	No
Jun 2019	$27.6bn	0.149%	-0.030 pp	+1.0%	No
May 2019	$25.8bn	0.151%	-0.029 pp	-5.7%	Yes
Apr 2019	$29.5bn	0.164%	-0.027 pp	+3.9%	Yes
Mar 2019	$28.7bn	0.165%	-0.042 pp	-8.3%	Yes
Feb 2019	$31.0bn	0.180%	-0.024 pp	-2.1%	Yes
Jan 2019	$31.9bn	0.105%	-0.101 pp	-5.6%	Yes
Dec 2018	$26.1bn	0.093%	-0.112 pp	-22.7%	No
Nov 2018	$30.7bn	0.102%	-0.104 pp	-9.5%	No
Oct 2018	$27.6bn	0.094%	-0.112 pp	-18.6%	No
Sep 2018	$35.8bn	0.114%	-0.092 pp	+3.5%	No
Aug 2018	$35.1bn	0.113%	-0.092 pp	+1.6%	No
Jul 2018	$33.7bn	0.197%	-0.009 pp	-3.8%	Yes
Jun 2018	$29.5bn	0.179%	-0.027 pp	-15.9%	No
May 2018	$29.6bn	0.180%	-0.026 pp	-15.8%	No
Apr 2018	$31.1bn	0.191%	-0.015 pp	-12.9%	No
Mar 2018	$33.7bn	0.207%	+0.001 pp	-5.6%	Yes
Feb 2018	$34.0bn	0.204%	-0.002 pp	-4.9%	No
Jan 2018	$36.1bn	0.206%	+0.000 pp	+0.0%	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.