Southwest Airlines Co.
DE ˙ XTRA ˙ US8447411088
36,32 € ↓ -0,29 (-0,79%)
2026-06-02
DEL PRIS
SecurityDE:SWN / Southwest Airlines Co.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership9,285 shares
Latest Disclosed Value $ 348,977
Janus Henderson Group Plc reports 23.06% decrease in ownership of SWN / Southwest Airlines Co.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 9,285 shares of Southwest Airlines Co. (DE:SWN) valued at $299,813 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 12,068 shares of Southwest Airlines Co.. This represents a change in shares of -23.06% during the quarter. The current value of the position is $337,231 USD.

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)
2026-05-18 2026-03-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 9,285 -2,783 -23.06 349 -30.12 0.0001
2026-05-15 2026-03-31 13F SOUTHWEST AIRLS COM 844741108 9,285 -2,783 -23.06 349 -30.12 0.0001
2026-02-17 2025-12-31 13F SOUTHWEST AIRLS COM 844741108 12,068 -19,940 -62.30 499 -51.22 0.0002
2025-11-14 2025-09-30 13F SOUTHWEST AIRLS COM 844741108 32,008 0 0.00 1,022 -1.54 0.0005
2025-08-14 2025-06-30 13F SOUTHWEST AIRLS COM 844741108 32,008 -12,858 -28.66 1,038 -31.23 0.0005
2025-05-15 2025-03-31 13F SOUTHWEST AIRLS COM 844741108 44,866 -64 -0.14 1,508 -0.20 0.0008
2025-02-14 2024-12-31 13F SOUTHWEST AIRLS COM 844741108 44,930 7,137 18.88 1,511 34.91 0.0008
2024-11-14 2024-09-30 13F SOUTHWEST AIRLS COM 844741108 37,793 11,600 44.29 1,120 49.53 0.0006
2024-08-14 2024-06-30 13F SOUTHWEST AIRLS COM 844741108 26,193 -3,084 -10.53 750 -12.30 0.0004
2024-05-15 2024-03-31 13F SOUTHWEST AIRLS COM 844741108 29,277 -57 -0.19 854 0.83 0.0005
2024-02-14 2023-12-31 13F SOUTHWEST AIRLS COM 844741108 29,334 -470 -1.58 847 5.09 0.0005
2023-11-14 2023-09-30 13F SOUTHWEST AIRLS COM 844741108 29,804 -2,207 -6.89 807 -30.40 0.0005
2023-08-14 2023-06-30 13F SOUTHWEST AIRLS COM 844741108 32,011 -397 -1.23 1,159 9.87 0.0007
2023-05-15 2023-03-31 13F SOUTHWEST AIRLS COM 844741108 32,408 15,217 88.52 1,055 82.35 0.0007
2023-02-14 2022-12-31 13F SOUTHWEST AIRLS COM 844741108 17,191 -2 -0.01 579 8.85 0.0004
2023-01-13 2022-09-30 13F/A-1 SOUTHWEST AIRLS COM 844741108 17,193 -1,029,220 -98.36 531 -98.60 0.0004
2022-11-14 2022-09-30 13F SOUTHWEST AIRLS COM 844741108 17,193 -1,029,220 531 0.0004
2022-08-15 2022-06-30 13F SOUTHWEST AIRLS COM 844741108 1,046,413 -36,969 -3.41 37,796 -23.83 0.0261
2022-05-16 2022-03-31 13F SOUTHWEST AIRLS COM 844741108 1,083,382 -1,697,259 -61.04 49,619 -58.35 0.0240
2022-02-14 2021-12-31 13F SOUTHWEST AIRLS COM 844741108 2,780,641 -1,364,697 -32.92 119,123 -44.12 0.0497
2021-11-16 2021-09-30 13F SOUTHWEST AIRLS COM 844741108 4,145,338 665,419 19.12 213,195 15.40 0.0932
2021-08-16 2021-06-30 13F SOUTHWEST AIRLS COM 844741108 3,479,919 -67,761 -1.91 184,749 -14.71 0.0791
2021-05-17 2021-03-31 13F SOUTHWEST AIRLS COM 844741108 3,547,680 3,034,431 591.22 216,622 805.53 0.0989
2021-02-16 2020-12-31 13F SOUTHWEST AIRLS COM 844741108 513,249 456,569 805.52 23,922 1,025.74 0.0111
2020-11-16 2020-09-30 13F SOUTHWEST AIRLS COM 844741108 56,680 -1,494 -2.57 2,125 6.89 0.0011
2020-08-14 2020-06-30 13F SOUTHWEST AIRLS COM 844741108 58,174 26,621 84.37 1,988 76.87 0.0011
2020-05-14 2020-03-31 13F SOUTHWEST AIRLS COM 844741108 31,553 -2,615,298 -98.81 1,124 -99.21 0.0008
2020-02-18 2019-12-31 13F SOUTHWEST AIRLS COM 844741108 2,646,851 2,605,824 6,351.49 142,877 6,347.52 0.0732
2019-11-14 2019-09-30 13F SOUTHWEST AIRLS COM 844741108 41,027 2,390 6.19 2,216 12.95 0.0012
2019-07-31 2019-06-30 13F SOUTHWEST AIRLS COM 844741108 38,637 -986 -2.49 1,962 -4.62 0.0011
2019-04-30 2019-03-31 13F SOUTHWEST AIRLS COM 844741108 39,623 -2,326 -5.54 2,057 5.49 0.0011
2019-02-06 2018-12-31 13F SOUTHWEST AIRLS COM 844741108 41,949 -6,498 -13.41 1,950 -35.54 0.0012
2018-11-09 2018-09-30 13F SOUTHWEST AIRLS COM 844741108 48,447 -20,334 -29.56 3,025 -13.57 0.0016
2018-08-10 2018-06-30 13F SOUTHWEST AIRLS COM 844741108 68,781 -318,099 -82.22 3,500 -84.21 0.0020
2018-05-14 2018-03-31 13F SOUTHWEST AIRLS COM 844741108 386,880 -352,761 -47.69 22,161 -54.22 0.0131
2018-03-12 2017-12-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 739,641 -1,082,344 -59.40 48,410 -52.54 0.0298
2018-02-09 2017-12-31 13F SOUTHWEST AIRLS COM 844741108 739,641 -1,082,344 48,410
2017-11-14 2017-09-30 13F SOUTHWEST AIRLS COM 844741108 1,821,985 1,151,371 171.69 101,994 144.75 0.0654
2017-08-17 2017-06-30 13F/A-1 SOUTHWEST AIRLS COM 844741108 670,614 646,107 2,636.42 41,672 3,064.16 0.0284
2017-08-14 2017-06-30 13F SOUTHWEST AIRLS COM 844741108 670,614 646,107 41,672
2017-05-03 2017-03-31 13F SOUTHWEST AIRLS COM 844741108 24,507 0 0.00 1,317 7.77 0.0092
2017-01-30 2016-12-31 13F SOUTHWEST AIRLS COM 844741108 24,507 2,200 9.86 1,222 40.78 0.0090
2016-10-24 2016-09-30 13F SOUTHWEST AIRLS COM 844741108 22,307 0 0.00 868 -0.69 0.0064
2016-07-29 2016-06-30 13F SOUTHWEST AIRLS COM 844741108 22,307 0 0.00 874 -12.51 0.0073
2016-05-12 2016-03-31 13F SOUTHWEST AIRLS COM 844741108 22,307 0 0.00 999 3.95 0.0081
2016-02-03 2015-12-31 13F SOUTHWEST AIRLS COM 844741108 22,307 0 0.00 961 13.19 0.0077
2015-11-16 2015-09-30 13F SOUTHWEST AIRLS COM 844741108 22,307 0 0.00 849 15.04 0.0075
2015-08-17 2015-06-30 13F SOUTHWEST AIRLS COM 844741108 22,307 -77,440 -77.64 738 -83.30 0.0058
2015-06-02 2015-03-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 99,747 87,256 698.55 4,419 736.93 0.0341
2015-05-15 2015-03-31 13F SOUTHWEST AIRLS COM 844741108 99,747 4,419
2015-02-12 2014-12-31 13F SOUTHWEST AIRLS COM 844741108 12,491 0 0.00 528 25.12 0.0038
2014-11-12 2014-09-30 13F SOUTHWEST AIRLS COM 844741108 12,491 0 0.00 422 25.97 0.0040
2014-08-13 2014-06-30 13F SOUTHWEST AIRLS COM 844741108 12,491 0 0.00 335 13.56 0.0031
2014-05-08 2014-03-31 13F SOUTHWEST AIRLS COM 844741108 12,491 3,000 31.61 295 64.80 0.0029
2014-01-14 2013-12-31 13F SOUTHWEST AIRLS COM 844741108 9,491 0 0.00 179 29.71 0.0018
2013-11-12 2013-09-30 13F SOUTHWEST AIRLS COM 844741108 9,491 0 0.00 138 11.29 0.0015
2013-08-15 2013-06-30 13F SOUTHWEST AIRLS COM 844741108 9,491 9,491 124 0.0014
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.