Southwest Airlines Co.
MX ˙ BMV ˙ US8447411088
SecurityMX:LUV / Southwest Airlines Co.
InstitutionFinancial Advisory Service, Inc.
Latest Disclosed Ownership86,751 shares
Latest Disclosed Value $ 3,585,412
Financial Advisory Service, Inc. reports 6.18% increase in ownership of LUV / Southwest Airlines Co.

On February 18, 2026 - Financial Advisory Service, Inc. filed a 13F-HR form disclosing ownership of 86,751 shares of Southwest Airlines Co. (MX:LUV) valued at $3,585,412 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 29, 2025 disclosing 81,699 shares of Southwest Airlines Co.. This represents a change in shares of 6.18% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-02-18 2025-12-31 13F SOUTHWEST AIRLS COM 844741108 86,751 5,052 6.18 3,585 37.51 0.2317
2025-10-29 2025-09-30 13F SOUTHWEST AIRLS COM 844741108 81,699 5,070 6.62 2,607 4.91 0.1766
2025-08-14 2025-06-30 13F SOUTHWEST AIRLS COM 844741108 76,629 3,734 5.12 2,486 1.55 0.1839
2025-05-05 2025-03-31 13F SOUTHWEST AIRLS COM 844741108 72,895 3,403 4.90 2,448 4.75 0.1997
2025-02-14 2024-12-31 13F SOUTHWEST AIRLS COM 844741108 69,492 69,492 2,336 0.1962
2024-07-29 2024-06-30 13F SOUTHWEST AIRLS COM 844741108 0 -7,531 -100.00 0 -100.00
2024-04-29 2024-03-31 13F SOUTHWEST AIRLS COM 844741108 7,531 30 0.40 220 1.39 0.0195
2024-01-23 2023-12-31 13F SOUTHWEST AIRLS COM 844741108 7,501 -30,665 -80.35 217 -79.09 0.0206
2023-10-23 2023-09-30 13F SOUTHWEST AIRLS COM 844741108 38,166 1,705 4.68 1,033 -21.74 0.1104
2023-08-08 2023-06-30 13F SOUTHWEST AIRLS COM 844741108 36,461 2,382 6.99 1,320 19.13 0.1670
2023-05-11 2023-03-31 13F SOUTHWEST AIRLS COM 844741108 34,079 3,036 9.78 1,109 6.03 0.1202
2023-02-01 2022-12-31 13F SOUTHWEST AIRLS COM 844741108 31,043 893 2.96 1,045 12.37 0.1184
2022-10-20 2022-09-30 13F SOUTHWEST AIRLS COM 844741108 30,150 5,080 20.26 930 2.65 0.1033
2022-08-02 2022-06-30 13F SOUTHWEST AIRLS COM 844741108 25,070 1,976 8.56 906 -14.37 0.0954
2022-05-04 2022-03-31 13F SOUTHWEST AIRLS COM 844741108 23,094 3,964 20.72 1,058 29.02 0.0996
2022-02-11 2021-12-31 13F SOUTHWEST AIRLS COM 844741108 19,130 7,408 63.20 820 35.99 0.0752
2021-11-15 2021-09-30 13F SOUTHWEST AIRLS COM 844741108 11,722 6,234 113.59 603 107.22 0.0564
2021-07-29 2021-06-30 13F SOUTHWEST AIRLS COM 844741108 5,488 5,488 291 0.0273
2019-05-13 2019-03-31 13F SOUTHWEST AIRLS COM 844741108 0 -7,112 -100.00 0 -100.00
2019-02-08 2018-12-31 13F SOUTHWEST AIRLS COM 844741108 7,112 0 0.00 331 -25.45 0.0757
2018-11-05 2018-09-30 13F SOUTHWEST AIRLS COM 844741108 7,112 5 0.07 444 22.65 0.1010
2018-07-26 2018-06-30 13F SOUTHWEST AIRLS COM 844741108 7,107 -594 -7.71 362 -17.91 0.0973
2018-05-02 2018-03-31 13F SOUTHWEST AIRLS COM 844741108 7,701 309 4.18 441 -8.88 0.1271
2018-01-29 2017-12-31 13F SOUTHWEST AIRLS COM 844741108 7,392 -584 -7.32 484 8.28 0.1271
2017-10-19 2017-09-30 13F SOUTHWEST AIRLS COM 844741108 7,976 -157 -1.93 447 -11.49 0.1247
2017-08-01 2017-06-30 13F SOUTHWEST AIRLS COM 844741108 8,133 351 4.51 505 20.81 0.1505
2017-05-08 2017-03-31 13F SOUTHWEST AIRLS COM 844741108 7,782 610 8.51 418 17.09 0.1291
2017-02-07 2016-12-31 13F SOUTHWEST AIRLS COM 844741108 7,172 7,172 357 0.1058
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.