Southwest Airlines Co.
AT ˙ WBAG ˙ US8447411088
35,81 € ↑0,01 (0,03%)
2026-06-04
DEL PRIS
SecurityAT:LUV / Southwest Airlines Co.
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership18,070 shares
Latest Disclosed Value $ 678,890
Asset Management One Co., Ltd. reports 6.22% decrease in ownership of LUV / Southwest Airlines Co.

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 18,070 shares of Southwest Airlines Co. (AT:LUV) valued at $572,729 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 19,268 shares of Southwest Airlines Co.. This represents a change in shares of -6.22% during the quarter. The current value of the position is $647,087 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)
2026-05-08 2026-03-31 13F SOUTHWEST AIRLS COM 844741108 18,070 -1,198 -6.22 679 -14.39 0.0020
2026-01-27 2025-12-31 13F SOUTHWEST AIRLS COM 844741108 19,268 315 1.66 792 31.13 0.0022
2025-10-22 2025-09-30 13F SOUTHWEST AIRLS COM 844741108 18,953 95 0.50 605 -1.15 0.0018
2025-07-31 2025-06-30 13F SOUTHWEST AIRLS COM 844741108 18,858 -51,552 -73.22 612 -74.15 0.0019
2025-04-23 2025-03-31 13F SOUTHWEST AIRLS COM 844741108 70,410 4,937 7.54 2,364 6.10 0.0082
2025-01-30 2024-12-31 13F SOUTHWEST AIRLS COM 844741108 65,473 2,354 3.73 2,229 19.14 0.0077
2024-10-30 2024-09-30 13F SOUTHWEST AIRLS COM 844741108 63,119 2,508 4.14 1,870 7.84 0.0067
2024-07-18 2024-06-30 13F SOUTHWEST AIRLS COM 844741108 60,611 -3,789 -5.88 1,734 -7.72 0.0066
2024-05-02 2024-03-31 13F SOUTHWEST AIRLS COM 844741108 64,400 -1,546 -2.34 1,880 -2.99 0.0072
2024-01-24 2023-12-31 13F SOUTHWEST AIRLS COM 844741108 65,946 -1,552 -2.30 1,937 6.02 0.0078
2023-10-19 2023-09-30 13F SOUTHWEST AIRLS COM 844741108 67,498 -999 -1.46 1,827 -26.33 0.0081
2023-07-31 2023-06-30 13F SOUTHWEST AIRLS COM 844741108 68,497 3,398 5.22 2,480 17.09 0.0105
2023-04-25 2023-03-31 13F SOUTHWEST AIRLS COM 844741108 65,099 2,183 3.47 2,118 0.86 0.0096
2023-02-06 2022-12-31 13F SOUTHWEST AIRLS COM 844741108 62,916 -5,768 -8.40 2,101 -0.85 0.0102
2022-11-04 2022-09-30 13F SOUTHWEST AIRLS COM 844741108 68,684 7,585 12.41 2,118 -3.99 0.0108
2022-07-29 2022-06-30 13F SOUTHWEST AIRLS COM 844741108 61,099 -1,634 -2.60 2,206 -23.19 0.0104
2022-05-13 2022-03-31 13F SOUTHWEST AIRLS COM 844741108 62,733 -8,110 -11.45 2,872 -3.88 0.0112
2022-02-09 2021-12-31 13F SOUTHWEST AIRLS COM 844741108 70,843 -4,289 -5.71 2,988 -22.71 0.0104
2021-11-02 2021-09-30 13F SOUTHWEST AIRLS COM 844741108 75,132 -2,501 -3.22 3,866 -6.19 0.0148
2021-08-03 2021-06-30 13F SOUTHWEST AIRLS COM 844741108 77,633 7,340 10.44 4,121 -3.98 0.0153
2021-05-14 2021-03-31 13F SOUTHWEST AIRLS COM 844741108 70,293 -5,896 -7.74 4,292 22.04 0.0170
2021-02-12 2020-12-31 13F SOUTHWEST AIRLS COM 844741108 76,189 630 0.83 3,517 24.14 0.0145
2020-11-13 2020-09-30 13F SOUTHWEST AIRLS COM 844741108 75,559 -202 -0.27 2,833 9.38 0.0130
2020-08-14 2020-06-30 13F SOUTHWEST AIRLS COM 844741108 75,761 4,676 6.58 2,590 2.25 0.0127
2020-05-14 2020-03-31 13F SOUTHWEST AIRLS COM 844741108 71,085 -4,653 -6.14 2,533 -38.04 0.0148
2020-02-14 2019-12-31 13F SOUTHWEST AIRLS COM 844741108 75,738 -2,770 -3.53 4,088 -3.61 0.0184
2019-11-14 2019-09-30 13F SOUTHWEST AIRLS COM 844741108 78,508 3,014 3.99 4,241 10.62 0.0204
2019-08-14 2019-06-30 13F SOUTHWEST AIRLS COM 844741108 75,494 5,757 8.26 3,834 5.97 0.0188
2019-05-15 2019-03-31 13F SOUTHWEST AIRLS COM 844741108 69,737 -171,307 -71.07 3,618 -67.72 0.0196
2019-02-13 2018-12-31 13F SOUTHWEST AIRLS COM 844741108 241,044 -449 -0.19 11,209 -25.69 0.0267
2018-11-14 2018-09-30 13F SOUTHWEST AIRLS COM 844741108 241,493 1,006 0.42 15,085 23.31 0.0310
2018-08-14 2018-06-30 13F SOUTHWEST AIRLS COM 844741108 240,487 -8,642 -3.47 12,233 -14.27 0.0267
2018-05-14 2018-03-31 13F SOUTHWEST AIRLS COM 844741108 249,129 499 0.20 14,270 -12.36 0.0321
2018-02-14 2017-12-31 13F SOUTHWEST AIRLS COM 844741108 248,630 -31,793 -11.34 16,282 3.66 0.0359
2017-11-14 2017-09-30 13F SOUTHWEST AIRLS COM 844741108 280,423 7,749 2.84 15,707 -7.28 0.0369
2017-08-14 2017-06-30 13F SOUTHWEST AIRLS COM 844741108 272,674 27,319 11.13 16,940 28.41 0.0432
2017-05-11 2017-03-31 13F SOUTHWEST AIRLINES COM 844741108 245,355 -19,735 -7.44 13,192 -0.20 0.0346
2017-05-02 2016-12-31 13F/A-1 SOUTHWEST AIRLINES COM 844741108 265,090 241,097 1,004.86 13,219 1,333.73 0.0338
2017-02-13 2016-12-31 13F SOUTHWEST AIRLINES COM 844741108 397,205 19,804
2016-11-07 2016-09-30 13F SOUTHWEST AIRLINES Com 844741108 23,993 -1,089 -4.34 922 -5.82 0.0137
2016-08-03 2016-06-30 13F SOUTHWEST AIRLINES Com 844741108 25,082 -91,497 -78.48 979 -81.26 0.0147
2016-05-05 2016-03-31 13F SOUTHWEST AIRLINES Com 844741108 116,579 86,691 290.05 5,225 299.46 0.0763
2016-01-28 2015-12-31 13F SOUTHWEST AIRLINES Com 844741108 29,888 -20,483 -40.66 1,308 -31.34 0.0195
2015-11-12 2015-09-30 13F SOUTHWEST AIRLINES Com 844741108 50,371 12,922 34.51 1,905 53.51 0.0290
2015-08-06 2015-06-30 13F SOUTHWEST AIRLINES Com 844741108 37,449 -296,982 -88.80 1,241 -91.63 0.0172
2015-05-11 2015-03-31 13F SOUTHWEST AIRLINES Com 844741108 334,431 -28,363 -7.82 14,824 -3.32 0.1830
2015-02-09 2014-12-31 13F SOUTHWEST AIRLINES Com 844741108 362,794 -153,323 -29.71 15,333 -12.00 0.1990
2014-11-05 2014-09-30 13F SOUTHWEST AIRLINES Com 844741108 516,117 -79,423 -13.34 17,424 8.83 0.2406
2014-08-12 2014-06-30 13F SOUTHWEST AIRLINES Com 844741108 595,540 148,220 33.14 16,010 51.80 0.2390
2014-05-05 2014-03-31 13F SOUTHWEST AIRLINES Com 844741108 447,320 300,569 204.82 10,547 281.86 0.1662
2014-02-05 2013-12-31 13F/A-1 SOUTHWEST AIRLINES COM 844741108 146,751 127,914 679.06 2,762 904.36 0.0428
2014-01-29 2013-12-31 13F SOUTHWEST AIRLINES COM 844741108 146,751 2,762
2014-02-05 2013-09-30 13F/A-1 SOUTHWEST AIRLINES Com 844741108 18,837 -473,157 -96.17 275 -95.67 0.0041
2013-11-06 2013-09-30 13F SOUTHWEST AIRLINES Com 844741108 18,837 275
2014-02-12 2013-06-30 13F/A-1 SOUTHWEST AIRLINES Com 844741108 491,994 491,994 6,344 0.1030
2013-08-05 2013-06-30 13F SOUTHWEST AIRLINES Com 844741108 491,994 6,344
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.