Observatory · observe first
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
0.130%
12M weight contribution
+0.130 pp
3M weight contribution
+0.062 pp
12M price return
+91.5%
Share of matched S&P 500 members
Monthly observations through May 2021
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 |
|---|---|---|---|---|---|
| May 2021 | $36.3bn | 0.130% | +0.130 pp | +91.5% | Yes |
| Apr 2021 | $37.1bn | 0.135% | +0.046 pp | +100.9% | Yes |
| Mar 2021 | $36.1bn | 0.071% | +0.070 pp | +71.5% | No |
| Feb 2021 | $34.3bn | 0.069% | +0.069 pp | +26.3% | No |
| Jan 2021 | $25.9bn | 0.062% | -0.081 pp | -19.8% | No |
| Dec 2020 | $27.5bn | 0.111% | -0.028 pp | -13.3% | Yes |
| Nov 2020 | $27.4bn | 0.116% | -0.037 pp | -19.0% | Yes |
| Oct 2020 | $23.3bn | 0.110% | -0.047 pp | -29.1% | Yes |
| Sep 2020 | $22.1bn | 0.000% | -0.154 pp | -30.1% | No |
| Aug 2020 | $22.2bn | 0.000% | -0.153 pp | -27.7% | No |
| Jul 2020 | $18.2bn | 0.000% | -0.147 pp | -39.4% | No |
| Jun 2020 | $17.4bn | 0.000% | -0.149 pp | -32.0% | No |
| May 2020 | $16.3bn | 0.000% | -0.150 pp | -31.6% | No |
| Apr 2020 | $15.9bn | 0.089% | -0.075 pp | -41.5% | Yes |
| Mar 2020 | $18.4bn | 0.000% | -0.165 pp | -30.4% | No |
| Feb 2020 | $23.9bn | 0.000% | -0.179 pp | -16.5% | No |
| Jan 2020 | $28.9bn | 0.143% | +0.037 pp | -1.8% | No |
| Dec 2019 | $28.4bn | 0.139% | +0.046 pp | +17.7% | No |
| Nov 2019 | $30.3bn | 0.153% | +0.051 pp | +7.0% | Yes |
| 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 |
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.