Southwest Airlines Co.
MX ˙ BMV ˙ US8447411088
SecurityMX:LUV / Southwest Airlines Co.
InstitutionSunbelt Securities, Inc.
Latest Disclosed Ownership784 shares
Latest Disclosed Value $ 29,440
Sunbelt Securities, Inc. reports 15.12% increase in ownership of LUV / Southwest Airlines Co.

On May 16, 2026 - Sunbelt Securities, Inc. filed a 13F-HR form disclosing ownership of 784 shares of Southwest Airlines Co. (MX:LUV) valued at $29,440 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 20, 2026 disclosing 681 shares of Southwest Airlines Co.. This represents a change in shares of 15.12% 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)
2026-05-16 2026-03-31 13F SOUTHWEST AIRLS CO COM Stock 844741108 784 103 15.12 29 3.57 0.0019
2026-02-20 2025-12-31 13F SOUTHWEST AIRLS CO COM Stock 844741108 681 -102 -13.03 28 16.67 0.0019
2025-11-19 2025-09-30 13F SOUTHWEST AIRLS CO COM Stock 844741108 783 -155 -16.52 25 -22.58 0.0017
2025-08-14 2025-06-30 13F SOUTHWEST AIRLS CO COM Stock 844741108 938 19 2.07 32 3.33 0.0028
2025-04-24 2025-03-31 13F SOUTHWEST AIRLS CO COM Stock 844741108 919 -219 -19.24 31 -21.05 0.0028
2025-02-18 2024-12-31 13F SOUTHWEST AIRLS CO COM Stock 844741108 1,138 -263 -18.77 38 -7.32 0.0034
2024-11-18 2024-09-30 13F SOUTHWEST AIRLS CO COM Stock 844741108 1,401 -304 -17.83 42 -14.58 0.0041
2024-08-16 2024-06-30 13F SOUTHWEST AIRLS CO COM Stock 844741108 1,705 -1,013 -37.27 49 -39.24 0.0050
2024-04-15 2024-03-31 13F SOUTHWEST AIRLS CO COM Stock 844741108 2,718 -682 -20.06 79 -19.39 0.0089
2024-02-15 2023-12-31 13F SOUTHWEST AIRLS CO COM Stock 844741108 3,400 447 15.14 98 24.05 0.0124
2023-12-11 2023-09-30 13F SOUTHWEST AIRLS CO COM Stock 844741108 2,953 -557 -15.87 80 -37.80 0.0111
2023-08-16 2023-06-30 13F SOUTHWEST AIRLS CO COM Stock 844741108 3,510 -2,821 -44.56 127 -36.82 0.0183
2023-05-17 2023-03-31 13F SOUTHWEST AIRLS CO COM Stock 844741108 6,331 6,331 201 0.0324
2022-02-14 2021-12-31 13F SOUTHWEST AIRLS COM 844741108 0 -6,374 -100.00 0 -100.00
2021-11-15 2021-09-30 13F SOUTHWEST AIRLS COM 844741108 6,374 0 0.00 318 0.00 0.0572
2021-07-29 2021-06-30 13F SOUTHWEST AIRLS COM 844741108 6,374 -295 -4.42 318 -21.87 0.0572
2021-05-27 2021-03-31 13F SOUTHWEST AIRLS COM 844741108 6,669 -11,110 -62.49 407 -50.90 0.0802
2021-02-09 2020-12-31 13F SOUTHWEST AIRLS COM 844741108 17,779 3,236 22.25 829 49.64 0.1713
2020-11-17 2020-09-30 13F SOUTHWEST AIRLS COM 844741108 14,543 2,052 16.43 554 29.74 0.1540
2020-08-14 2020-06-30 13F SOUTHWEST AIRLS COM 844741108 12,491 12,491 427 0.1467
2020-05-15 2020-03-31 13F SOUTHWEST AIRLS COM 844741108 0 -46,727 -100.00 0 -100.00
2020-02-26 2019-12-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 46,727 -393 -0.83 2,522 -0.90 0.2655
2020-02-14 2019-12-31 13F SOUTHWEST AIRLS COM 844741108 46,727 -393 631 248.7243
2019-11-15 2019-09-30 13F SOUTHWEST AIRLS COM 844741108 47,120 42,354 888.67 2,545 951.65 0.2854
2019-08-01 2019-06-30 13F SOUTHWEST AIRLS COM 844741108 4,766 -3,199 -40.16 242 -41.40 0.1052
2019-05-15 2019-03-31 13F SOUTHWEST AIRLS COM 844741108 7,965 -565 -6.62 413 4.29 0.2065
2019-02-14 2018-12-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 8,530 4,941 137.67 396 76.79 0.2307
2019-02-11 2018-12-31 13F SOUTHWEST AIRLS COM 844741108 3,589 0 224 0.1199
2018-11-14 2018-09-30 13F SOUTHWEST AIRLS COM 844741108 3,589 3,589 224 0.1199
2017-05-05 2017-03-31 13F SOUTHWEST AIRLS COM 844741108 0 -138 -100.00 0 -100.00
2017-02-13 2016-12-31 13F SOUTHWEST AIRLS COM 844741108 138 138 0.00 7 0.0084
2016-11-14 2016-09-30 13F SOUTHWEST AIRLS COM 844741108 0 -202 -100.00 0 -100.00
2016-08-11 2016-06-30 13F SOUTHWEST AIRLS COM 844741108 202 -218 -51.90 8 -61.11 0.0083
2016-05-11 2016-03-31 13F SOUTHWEST AIRLS COM 844741108 420 -99 -19.08 19 -18.18 0.0218
2016-02-11 2015-12-31 13F SOUTHWEST AIRLS COM 844741108 519 -5 -0.95 22 15.79 0.0250
2015-11-12 2015-09-30 13F SOUTHWEST AIRLS COM 844741108 524 -48 -8.39 20 5.56 0.0211
2015-08-13 2015-06-30 13F SOUTHWEST AIRLS COM 844741108 572 572 19 0.0202
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.