Southwest Airlines Co.
MX ˙ BMV ˙ US8447411088
SecurityMX:LUV / Southwest Airlines Co.
InstitutionBlume Capital Management, Inc.
Latest Disclosed Ownership258 shares
Latest Disclosed Value $ 9,694
Blume Capital Management, Inc. ownership in LUV / Southwest Airlines Co.

On May 1, 2026 - Blume Capital Management, Inc. filed a 13F-HR form disclosing ownership of 258 shares of Southwest Airlines Co. (MX:LUV) valued at $9,694 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 258 shares of Southwest Airlines Co.. This represents a change in shares of 0.00% 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)
2026-05-01 2026-03-31 13F SOUTHWEST AIRLS COM 844741108 258 0 0.00 10 -10.00 0.0016
2026-02-05 2025-12-31 13F SOUTHWEST AIRLS COM 844741108 258 0 0.00 11 25.00 0.0019
2025-11-06 2025-09-30 13F SOUTHWEST AIRLS COM 844741108 258 0 0.00 8 0.00 0.0016
2025-07-30 2025-06-30 13F SOUTHWEST AIRLS COM 844741108 258 0 0.00 8 0.00 0.0017
2025-05-06 2025-03-31 13F SOUTHWEST AIRLS COM 844741108 258 0 0.00 9 0.00 0.0019
2025-02-10 2024-12-31 13F SOUTHWEST AIRLS COM 844741108 258 -50 -16.23 9 -11.11 0.0019
2024-10-29 2024-09-30 13F SOUTHWEST AIRLS COM 844741108 308 50 19.38 9 28.57 0.0020
2024-08-05 2024-06-30 13F SOUTHWEST AIRLS COM 844741108 258 0 0.00 7 0.00 0.0018
2024-05-02 2024-03-31 13F SOUTHWEST AIRLS COM 844741108 258 0 0.00 8 0.00 0.0018
2024-05-02 2023-12-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 258 4 1.57 7 16.67 0.0019
2024-02-07 2023-12-31 13F SOUTHWEST AIRLS COM 844741108 258 4 7 0.0019
2024-05-02 2023-09-30 13F/A-1 SOUTHWEST AIRLS COM 844741108 254 0 0.00 7 -33.33 0.0020
2023-11-03 2023-09-30 13F SOUTHWEST AIRLS COM 844741108 254 0 7 0.0020
2024-05-02 2023-06-30 13F/A-1 SOUTHWEST AIRLS COM 844741108 254 4 1.60 9 12.50 0.0027
2023-08-10 2023-06-30 13F SOUTHWEST AIRLS COM 844741108 254 4 9 0.0027
2024-05-02 2023-03-31 13F/A-1 Southwest Airlines COM 844741108 250 0 0.00 8 0.00 0.0026
2023-05-08 2023-03-31 13F Southwest Airlines COM 844741108 250 0 8 0.0026
2023-02-08 2022-12-31 13F Southwest Airlines COM 844741108 250 0 0.00 8 0.00 0.0028
2022-11-15 2022-09-30 13F SOUTHWEST AIRLS COM 844741108 250 0 0.00 8 -11.11 0.0030
2022-08-11 2022-06-30 13F SOUTHWEST AIRLS COM 844741108 250 0 0.00 9 -18.18 0.0036
2022-05-12 2022-03-31 13F Southwest Airlines COM 844741108 250 0 0.00 11 0.00 0.0036
2022-02-07 2021-12-31 13F Southwest Airlines COM 844741108 250 -150 -37.50 11 -47.62 0.0036
2021-11-12 2021-09-30 13F Southwest Airlines COM 844741108 400 0 0.00 21 0.00 0.0077
2021-08-10 2021-06-30 13F Southwest Airlines COM 844741108 400 0 0.00 21 -12.50 0.0077
2021-05-10 2021-03-31 13F Southwest Airlines COM 844741108 400 0 0.00 24 26.32 0.0094
2021-02-09 2020-12-31 13F Southwest Airlines COM 844741108 400 0 0.00 19 26.67 0.0081
2020-11-12 2020-09-30 13F Southwest Airlines COM 844741108 400 0 0.00 15 7.14 0.0076
2020-08-06 2020-06-30 13F Southwest Airlines COM 844741108 400 0 0.00 14 0.00 0.0078
2020-05-07 2020-03-31 13F Southwest Airlines COM 844741108 400 0 0.00 14 -33.33 0.0090
2020-02-05 2019-12-31 13F Southwest Airlines COM 844741108 400 -150 -27.27 21 -27.59 0.0103
2019-11-12 2019-09-30 13F Southwest Airlines COM 844741108 550 0 0.00 29 3.57 0.0145
2019-07-29 2019-06-30 13F Southwest Airlines COM 844741108 550 -125 -18.52 28 -20.00 0.0142
2019-05-06 2019-03-31 13F Southwest Airlines COM 844741108 675 0 0.00 35 12.90 0.0184
2019-02-05 2018-12-31 13F Southwest Airlines COM 844741108 675 0 0.00 31 -26.19 0.0177
2018-11-02 2018-09-30 13F Southwest Airlines COM 844741108 675 0 0.00 42 23.53 0.0219
2018-08-02 2018-06-30 13F Southwest Airlines COM 844741108 675 0 0.00 34 -10.53 0.0185
2018-05-04 2018-03-31 13F Southwest Airlines COM 844741108 675 0 0.00 38 -13.64 0.0211
2018-02-09 2017-12-31 13F Southwest Airlines COM 844741108 675 0 0.00 44 15.79 0.0225
2018-02-14 2017-09-30 13F/A-1 Southwest Airlines COM 844741108 675 0 0.00 38 -9.52 0.0201
2017-11-13 2017-09-30 13F Southwest Airlines COM 844741108 675 0 38
2017-08-08 2017-06-30 13F Southwest Airlines COM 844741108 675 0 0.00 42 16.67 0.0238
2017-05-12 2017-03-31 13F Southwest Airlines COM 844741108 675 -160 -19.16 36 -14.29 0.0208
2017-01-30 2016-12-31 13F Southwest Airlines COM 844741108 835 0 0.00 42 31.25 0.0252
2016-11-07 2016-09-30 13F Southwest Airlines COM 844741108 835 160 23.70 32 23.08 0.0196
2016-08-11 2016-06-30 13F/A-1 Southwest Airlines COM 844741108 675 0 0.00 26 -13.33 0.0172
2016-08-04 2016-06-30 13F Southwest Airlines COM 844741108 0 26
2016-05-12 2016-03-31 13F Southwest Airlines COM 844741108 675 0 0.00 30 3.45 0.0207
2016-05-26 2015-12-31 13F/A-1 Southwest Airlines COM 844741108 675 0 0.00 29 11.54 0.0205
2016-02-08 2015-12-31 13F SOUTHWEST AIRLS COM 844741108 675 29
2015-11-05 2015-09-30 13F SOUTHWEST AIRLS COM 844741108 675 0 0.00 26 18.18 0.0211
2015-08-11 2015-06-30 13F SOUTHWEST AIRLS COM 844741108 675 0 0.00 22 -26.67 0.0166
2015-05-05 2015-03-31 13F SOUTHWEST AIRLS COM 844741108 675 0 0.00 30 3.45 0.0208
2015-02-10 2014-12-31 13F SOUTHWEST AIRLS COM 844741108 675 675 29 0.0204
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.