Southwest Airlines Co.
MX ˙ BMV ˙ US8447411088
SecurityMX:LUV / Southwest Airlines Co.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership5,763,154 shares
Latest Disclosed Value $ 216,471,836
Dimensional Fund Advisors Lp reports 2.09% increase in ownership of LUV / Southwest Airlines Co.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 5,763,154 shares of Southwest Airlines Co. (MX:LUV) valued at $216,471,836 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 5,645,321 shares of Southwest Airlines Co.. This represents a change in shares of 2.09% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F SOUTHWEST AIRLS COM 844741108 5,763,154 117,833 2.09 216,472 -7.22 0.0450
2026-02-12 2025-12-31 13F SOUTHWEST AIRLS COM 844741108 5,645,321 -163,673 -2.82 233,313 25.84 0.0489
2025-11-12 2025-09-30 13F SOUTHWEST AIRLS COM 844741108 5,808,994 -10,431 -0.18 185,409 -1.78 0.0398
2025-08-12 2025-06-30 13F SOUTHWEST AIRLS COM 844741108 5,819,425 -234,759 -3.88 188,774 -7.14 0.0437
2025-05-13 2025-03-31 13F SOUTHWEST AIRLS COM 844741108 6,054,184 -57,450 -0.94 203,285 -1.07 0.0505
2025-02-13 2024-12-31 13F SOUTHWEST AIRLS COM 844741108 6,111,634 372,313 6.49 205,476 20.83 0.0493
2024-11-07 2024-09-30 13F SOUTHWEST AIRLS COM 844741108 5,739,321 -88,845 -1.52 170,054 1.99 0.0412
2024-08-09 2024-06-30 13F SOUTHWEST AIRLS COM 844741108 5,828,166 1,034,496 21.58 166,742 19.16 0.0436
2024-05-10 2024-03-31 13F SOUTHWEST AIRLS COM 844741108 4,793,670 -540,777 -10.14 139,927 -9.18 0.0379
2024-02-07 2023-12-31 13F SOUTHWEST AIRLS COM 844741108 5,334,447 -42,018 -0.78 154,079 5.86 0.0450
2023-11-09 2023-09-30 13F SOUTHWEST AIRLS COM 844741108 5,376,465 150,301 2.88 145,552 -23.08 0.0477
2023-08-09 2023-06-30 13F SOUTHWEST AIRLS COM 844741108 5,226,164 295,744 6.00 189,235 17.97 0.0603
2023-05-12 2023-03-31 13F SOUTHWEST AIRLS COM 844741108 4,930,420 711,732 16.87 160,411 112,865.49 0.0540
2023-02-09 2022-12-31 13F SOUTHWEST AIRLS COM 844741108 4,218,688 -284,443 -6.32 142 -99.90 0.0420
2022-11-10 2022-09-30 13F SOUTHWEST AIRLS COM 844741108 4,503,131 105,574 2.40 138,912 -12.53 0.0533
2022-08-12 2022-06-30 13F SOUTHWEST AIRLS COM 844741108 4,397,557 80,486 1.86 158,820 -19.67 0.0570
2022-05-13 2022-03-31 13F SOUTHWEST AIRLS COM 844741108 4,317,071 40,437 0.95 197,717 7.92 0.0609
2022-02-09 2021-12-31 13F SOUTHWEST AIRLS COM 844741108 4,276,634 -109,857 -2.50 183,203 -18.81 0.0554
2021-11-12 2021-09-30 13F SOUTHWEST AIRLS COM 844741108 4,386,491 -150,334 -3.31 225,636 -6.32 0.0727
2021-08-12 2021-06-30 13F SOUTHWEST AIRLS COM 844741108 4,536,825 -100,035 -2.16 240,852 -14.94 0.0763
2021-05-14 2021-03-31 13F SOUTHWEST AIRLS COM 844741108 4,636,860 -514,763 -9.99 283,157 17.93 0.0937
2021-03-08 2020-12-31 13F/A-2 SOUTHWEST AIRLS COM 844741108 5,151,623 -605,402 -10.52 240,114 11.23 0.0867
2021-02-11 2020-12-31 13F SOUTHWEST AIRLS COM 844741108 5,151,623 -605,402 240,114 86,716.4140
2020-11-12 2020-09-30 13F SOUTHWEST AIRLS COM 844741108 5,757,025 58,039 1.02 215,875 10.80 0.0915
2020-08-13 2020-06-30 13F SOUTHWEST AIRLS COM 844741108 5,698,986 378,467 7.11 194,837 2.86 0.0856
2020-05-14 2020-03-31 13F SOUTHWEST AIRLS COM 844741108 5,320,519 151,856 2.94 189,423 -32.11 0.0987
2020-02-14 2019-12-31 13F SOUTHWEST AIRLS COM 844741108 5,168,663 -147 -0.00 279,012 -0.06 0.1017
2019-11-12 2019-09-30 13F SOUTHWEST AIRLS COM 844741108 5,168,810 55,999 1.10 279,192 7.53 0.1085
2019-08-13 2019-06-30 13F SOUTHWEST AIRLS COM 844741108 5,112,811 45,877 0.91 259,633 -1.26 0.1008
2019-08-12 2019-03-31 13F/A-2 SOUTHWEST AIRLS COM 844741108 5,066,934 146,317 2.97 262,946 14.96 0.1047
2019-05-10 2019-03-31 13F SOUTHWEST AIRLS COM 844741108 5,066,934 146,317 262,946
2019-02-26 2018-12-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 4,920,617 1,348,168 37.74 228,736 2.52 0.1036
2019-02-13 2018-12-31 13F SOUTHWEST AIRLS COM 844741108 4,920,617 1,348,168 228,736
2018-11-13 2018-09-30 13F SOUTHWEST AIRLS COM 844741108 3,572,449 -65,130 -1.79 223,109 20.55 0.0849
2018-08-10 2018-06-30 13F SOUTHWEST AIRLS COM 844741108 3,637,579 328,453 9.93 185,076 -2.36 0.0738
2018-05-11 2018-03-31 13F SOUTHWEST AIRLS COM 844741108 3,309,126 -38,847 -1.16 189,547 -13.50 0.0790
2018-02-12 2017-12-31 13F SOUTHWEST AIRLS COM 844741108 3,347,973 -1,197,197 -26.34 219,138 -13.88 0.0908
2017-11-13 2017-09-30 13F SOUTHWEST AIRLS COM 844741108 4,545,170 -527,485 -10.40 254,442 -19.28 0.1112
2017-08-11 2017-06-30 13F SOUTHWEST AIRLS COM 844741108 5,072,655 11,891 0.23 315,212 15.86 0.1455
2017-05-12 2017-03-31 13F SOUTHWEST AIRLS COM 844741108 5,060,764 -1,093,328 -17.77 272,065 -11.30 0.1300
2017-02-09 2016-12-31 13F SOUTHWEST AIRLS COM 844741108 6,154,092 -1,404,368 -18.58 306,736 4.36 0.1532
2016-11-10 2016-09-30 13F SOUTHWEST AIRLS COM 844741108 7,558,460 405 0.01 293,913 -0.82 0.1589
2016-08-09 2016-06-30 13F SOUTHWEST AIRLS COM 844741108 7,558,055 -158,206 -2.05 296,342 -14.28 0.1705
2016-05-13 2016-03-31 13F SOUTHWEST AIRLS COM 844741108 7,716,261 83,383 1.09 345,696 5.18 0.2069
2016-02-10 2015-12-31 13F SOUTHWEST AIRLS COM 844741108 7,632,878 -181,174 -2.32 328,683 10.57 0.2049
2015-11-13 2015-09-30 13F SOUTHWEST AIRLS COM 844741108 7,814,052 96,812 1.25 297,250 16.39 0.1951
2015-08-14 2015-06-30 13F SOUTHWEST AIRLS COM 844741108 7,717,240 -678,915 -8.09 255,381 -31.34 0.1564
2015-05-14 2015-03-31 13F SOUTHWEST AIRLS COM 844741108 8,396,155 -172,231 -2.01 371,943 2.57 0.2349
2015-02-06 2014-12-31 13F SOUTHWEST AIRLS COM 844741108 8,568,386 39,889 0.47 362,613 25.90 0.2382
2014-11-13 2014-09-30 13F SOUTHWEST AIRLS COM 844741108 8,528,497 10,993 0.13 288,008 25.88 0.2041
2014-08-08 2014-06-30 13F SOUTHWEST AIRLS COM 844741108 8,517,504 181,297 2.17 228,792 16.26 0.1590
2014-05-14 2014-03-31 13F SOUTHWEST AIRLS COM 844741108 8,336,207 193,901 2.38 196,797 28.29 0.1470
2014-02-12 2013-12-31 13F SOUTHWEST AIRLS COM 844741108 8,142,306 -59,790 -0.73 153,401 28.45 0.1195
2013-11-13 2013-09-30 13F SOUTHWEST AIRLS COM 844741108 8,202,096 52,761 0.65 119,422 13.68 0.1034
2013-08-15 2013-06-30 13F SOUTHWEST AIRLS COM 844741108 8,149,335 8,149,335 105,054 0.0989
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.