Southwest Airlines Co.
MX ˙ BMV ˙ US8447411088
SecurityMX:LUV / Southwest Airlines Co.
InstitutionWinch Advisory Services, LLC
Latest Disclosed Ownership710 shares
Latest Disclosed Value $ 26,667
Winch Advisory Services, LLC reports 0.42% increase in ownership of LUV / Southwest Airlines Co.

On April 30, 2026 - Winch Advisory Services, LLC filed a 13F-HR form disclosing ownership of 710 shares of Southwest Airlines Co. (MX:LUV) valued at $26,667 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 707 shares of Southwest Airlines Co.. This represents a change in shares of 0.42% 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)
2026-04-30 2026-03-31 13F SOUTHWEST AIRLINES COM 844741108 710 3 0.42 27 -10.34 0.0061
2026-02-03 2025-12-31 13F SOUTHWEST AIRLINES COM 844741108 707 -75 -9.59 29 20.83 0.0065
2025-11-12 2025-09-30 13F SOUTHWEST AIRLINES COM 844741108 782 183 30.55 25 26.32 0.0056
2025-08-07 2025-06-30 13F SOUTHWEST AIRLINES COM 844741108 599 316 111.66 19 111.11 0.0047
2025-05-06 2025-03-31 13F SOUTHWEST AIRLINES COM 844741108 283 -210 -42.60 9 -43.75 0.0025
2025-01-14 2024-12-31 13F SOUTHWEST AIRLINES COM 844741108 493 -254 -34.00 17 -27.27 0.0043
2024-10-21 2024-09-30 13F SOUTHWEST AIRLINES COM 844741108 747 9 1.22 22 4.76 0.0061
2024-07-31 2024-06-30 13F SOUTHWEST AIRLINES COM 844741108 738 0 0.00 21 0.00 0.0060
2024-05-14 2024-03-31 13F SOUTHWEST AIRLINES COM 844741108 738 9 1.23 22 0.00 0.0066
2024-01-18 2023-12-31 13F SOUTHWEST AIRLINES COM 844741108 729 45 6.58 21 0.0070
2023-11-06 2023-09-30 13F SOUTHWEST AIRLINES COM 844741108 684 8 1.18 0 0.0070
2023-08-08 2023-06-30 13F SOUTHWEST AIRLINES COM 844741108 676 0 0.00 0 0.0086
2023-05-10 2023-03-31 13F SOUTHWEST AIRLINES COM 844741108 676 7 1.05 0 0.0085
2023-01-26 2022-12-31 13F SOUTHWEST AIRLINES COM 844741108 669 0 0.00 0 -100.00 0.0098
2022-10-31 2022-09-30 13F SOUTHWEST AIRLINES COM 844741108 669 0 0.00 21 -12.50 0.0090
2022-08-12 2022-06-30 13F SOUTHWEST AIRLINES COM 844741108 669 -201 -23.10 24 -40.00 0.0098
2022-04-26 2022-03-31 13F SOUTHWEST AIRLINES COM 844741108 870 -2 -0.23 40 8.11 0.0139
2022-02-04 2021-12-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 872 0 0.00 37 -17.78 0.0122
2021-11-10 2021-09-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 872 0 0.00 45 -2.17 0.0157
2021-08-05 2021-06-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 872 0 0.00 46 -13.21 0.0165
2021-05-03 2021-03-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 872 0 0.00 53 29.27 0.0212
2021-02-09 2020-12-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 872 53 6.47 41 32.26 0.0170
2020-11-04 2020-09-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 819 86 11.73 31 24.00 0.0131
2020-08-12 2020-06-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 733 505 221.49 25 212.50 0.0119
2020-05-13 2020-03-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 228 63 38.18 8 -11.11 0.0040
2020-02-12 2019-12-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 165 15 10.00 9 12.50 0.0043
2019-11-13 2019-09-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 150 1 0.67 8 0.00 0.0042
2019-08-07 2019-06-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 149 0 0.00 8 0.00 0.0042
2019-05-13 2019-03-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 149 1 0.68 8 14.29 0.0044
2019-02-05 2018-12-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 148 0 0.00 7 -22.22 0.0039
2018-11-13 2018-09-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 148 1 0.68 9 28.57 0.0045
2018-08-13 2018-06-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 147 0 0.00 7 -12.50 0.0038
2018-05-11 2018-03-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 147 1 0.68 8 -20.00 0.0047
2018-02-13 2017-12-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 146 0 0.00 10 25.00 0.0060
2017-11-13 2017-09-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 146 0 0.00 8 -11.11 0.0052
2017-08-07 2017-06-30 13F Southwest Airlines COM 844741108 146 1 0.69 9 12.50 0.0057
2017-05-01 2017-03-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 145 0 0.00 8 14.29 0.0051
2017-01-19 2016-12-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 145 100 222.22 7 250.00 0.0048
2016-11-02 2016-09-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 45 11 32.35 2 100.00 0.0016
2016-08-10 2016-06-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 34 16 88.89 1 0.00 0.0012
2016-05-12 2016-03-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 18 7 63.64 1 0.0016
2016-01-22 2015-12-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 11 6 120.00 0 0.0000
2015-11-13 2015-09-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 5 5 0.00 0 0.0000
2015-08-11 2015-06-30 13F SOUTHWEST AIRLINES CO COM COM 844741108 0 -58,517 -100.00 0 -100.00
2015-05-14 2015-03-31 13F SOUTHWEST AIRLINES CO COM COM 844741108 58,517 41,584 245.58 2,592 261.51 1.5097
2015-02-11 2014-12-31 13F Southwest Airlines COM 844741108 16,933 16,933 717 0.3904
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.