Southwest Airlines Co.
MX ˙ BMV ˙ US8447411088
SecurityMX:LUV / Southwest Airlines Co.
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership245,909 shares
Latest Disclosed Value $ 9,238,801
Capital Fund Management S.a. ownership in LUV / Southwest Airlines Co.

On May 14, 2026 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 245,909 shares of Southwest Airlines Co. (MX:LUV) valued at $9,238,801 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 342,324 shares of Southwest Airlines Co.. This represents a change in shares of -28.16% during the quarter.

Capital Fund Management S.a. has a history of taking positions in derivatives of the underlying security (LUV) in the form of stock options. The firm currently holds call options representing 46,600 of underlying shares valued at $1,750,762 USD and put options representing 125,900 of underlying shares valued at $4,730,063 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:LUV / Southwest Airlines Co. Historical Put/Call Ratio
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)
2026-05-14 2026-03-31 13F SOUTHWEST AIRLS CO COM SOUTHWEST AIRLS CO COM 844741108 245,909 -96,415 -28.16 9,239 -34.70 0.0418
2026-02-17 2025-12-31 13F SOUTHWEST AIRLS CO COM SOUTHWEST AIRLS CO COM 844741108 342,324 32,599 10.53 14,148 43.15 0.0393
2025-11-13 2025-09-30 13F SOUTHWEST AIRLS COM 844741108 309,725 294,453 1,928.06 9,883 1,896.57 0.0259
2025-08-13 2025-06-30 13F SOUTHWEST AIRLS COM 844741108 15,272 15,272 495 0.0014
2023-05-15 2023-03-31 13F SOUTHWEST AIRLS COM 844741108 0 -383,324 -100.00 0 -100.00
2023-02-13 2022-12-31 13F SOUTHWEST AIRLS COM 844741108 383,324 -348,142 -47.60 12,907 -42.79 0.0867
2022-11-14 2022-09-30 13F SOUTHWEST AIRLS COM 844741108 731,466 130,690 21.75 22,558 3.95 0.1772
2022-08-12 2022-06-30 13F SOUTHWEST AIRLS COM 844741108 600,776 302,140 101.17 21,700 58.66 0.1973
2022-05-12 2022-03-31 13F SOUTHWEST AIRLS COM 844741108 298,636 -133,948 -30.96 13,678 -26.19 0.1117
2022-02-10 2021-12-31 13F SOUTHWEST AIRLS COM 844741108 432,584 -170,245 -28.24 18,532 -40.23 0.1335
2021-11-12 2021-09-30 13F SOUTHWEST AIRLS COM 844741108 602,829 481,699 397.67 31,003 382.16 0.2296
2021-08-12 2021-06-30 13F SOUTHWEST AIRLS COM 844741108 121,130 121,130 6,431 0.0509
2020-08-13 2020-06-30 13F Southwest Airlines COM 844741108 0 -83,314 -100.00 0 -100.00
2020-05-13 2020-03-31 13F Southwest Airlines COM 844741108 83,314 -284,643 -77.36 2,967 -85.06 0.0459
2020-02-13 2019-12-31 13F Southwest Airlines COM 844741108 367,957 -14,081 -3.69 19,862 -3.74 0.1563
2019-11-13 2019-09-30 13F Southwest Airlines COM 844741108 382,038 348,937 1,054.16 20,634 1,101.05 0.1857
2019-05-13 2019-03-31 13F/A-1 Southwest Airlines COM 844741108 33,101 33,101 -91.34 1,718 -91.67 0.0154
2019-02-13 2018-12-31 13F Southwest Airlines COM 844741108 0 -131,221 -100.00 0 -100.00
2018-11-14 2018-09-30 13F Southwest Airlines COM 844741108 131,221 131,221 8,195 0.0447
2018-05-15 2018-03-31 13F Southwest Airlines COM 844741108 0 -784,507 -100.00 0 -100.00
2018-02-09 2017-12-31 13F Southwest Airlines COM 844741108 784,507 51,800 7.07 51,346 25.18 0.2831
2017-11-13 2017-09-30 13F Southwest Airlines COM 844741108 732,707 609,950 496.88 41,017 437.72 0.2948
2017-08-10 2017-06-30 13F Southwest Airlines COM 844741108 122,757 122,757 -83.25 7,628 -81.40 0.0615
2017-05-03 2017-03-31 13F Southwest Airlines COM 844741108 0 -967,025 -100.00 0 -100.00
2017-02-08 2016-12-31 13F Southwest Airlines COM 844741108 967,025 -441,867 -31.36 48,197 -12.04 0.4151
2016-10-31 2016-09-30 13F Southwest Airlines COM 844741108 1,408,892 -309,300 -18.00 54,792 -18.67 0.5030
2016-07-27 2016-06-30 13F Southwest Airlines COM 844741108 1,718,192 1,409,012 455.73 67,370 386.39 0.6311
2016-05-02 2016-03-31 13F Southwest Airlines COM 844741108 309,180 309,180 -82.01 13,851 -79.44 0.1345
2016-01-28 2015-12-31 13F Southwest Airlines COM 844741108 0 -27,900 -100.00 0 -100.00
2015-10-27 2015-09-30 13F Southwest Airlines COM 844741108 27,900 -182,984 -86.77 1,061 -84.80 0.0119
2015-07-28 2015-06-30 13F Southwest Airlines COM 844741108 210,884 -890,732 -80.86 6,978 -85.70 0.0885
2015-04-28 2015-03-31 13F Southwest Airlines COM 844741108 1,101,616 1,101,616 422.38 48,802 599.37 0.6656
2015-01-28 2014-12-31 13F Southwest Airlines COM 844741108 0 -1,344,429 -100.00 0 -100.00
2014-10-31 2014-09-30 13F Southwest Airlines COM 844741108 1,344,429 769,848 133.98 45,401 194.18 0.5083
2014-08-01 2014-06-30 13F Southwest Airlines COM 844741108 574,581 190,921 49.76 15,433 113.52 0.1629
2014-01-31 2013-12-31 13F Southwest Airlines COM 844741108 383,660 141,732 58.58 7,228 105.22 0.0894
2013-10-31 2013-09-30 13F Southwest Airlines COM 844741108 241,928 54,437 29.03 3,522 45.72 0.0487
2013-07-31 2013-06-30 13F Southwest Airlines COM 844741108 187,491 187,491 2,417 0.0369
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F SOUTHWEST AIRLS CO COM SOUTHWEST AIRLS CO COM Call 46,600 -91.57 1,751 -92.34 n/a n/a n/a
2026-02-17 2025-12-31 13F SOUTHWEST AIRLS CO COM SOUTHWEST AIRLS CO COM Call 552,700 12.43 22,843 45.63 n/a n/a n/a
2025-11-13 2025-09-30 13F SOUTHWEST AIRLS COM Call 491,600 72.86 15,687 70.04 n/a n/a n/a
2025-08-13 2025-06-30 13F SOUTHWEST AIRLS COM Call 284,400 402.47 9,226 385.53 n/a n/a n/a
2025-05-14 2025-03-31 13F SOUTHWEST AIRLS COM Call 56,600 -91.62 1,901 -91.63 n/a n/a n/a
2025-02-13 2024-12-31 13F SOUTHWEST AIRLS COM Call 675,200 -17.81 22,700 -6.74 n/a n/a n/a
2024-11-13 2024-09-30 13F SOUTHWEST AIRLS COM Call 821,500 -1.21 24,341 2.31 n/a n/a n/a
2024-08-13 2024-06-30 13F SOUTHWEST AIRLS COM Call 831,600 -37.73 23,792 -38.96 n/a n/a n/a
2024-05-15 2024-03-31 13F SOUTHWEST AIRLS COM Call 1,335,400 -49.24 38,980 -48.70 n/a n/a n/a
2024-02-14 2023-12-31 13F SOUTHWEST AIRLS COM Call 2,630,900 295.51 75,980 321.97 n/a n/a n/a
2023-11-14 2023-09-30 13F SOUTHWEST AIRLS COM Call 665,200 -50.60 18,007 -63.07 n/a n/a n/a
2023-08-14 2023-06-30 13F SOUTHWEST AIRLS COM Call 1,346,500 131.88 48,757 158.04 n/a n/a n/a
2023-05-15 2023-03-31 13F SOUTHWEST AIRLS COM Call 580,700 420.34 18,896 402.93 n/a n/a n/a
2023-02-13 2022-12-31 13F SOUTHWEST AIRLS COM Call 111,600 34.78 3,758 47.16 n/a n/a n/a
2022-11-14 2022-09-30 13F SOUTHWEST AIRLS COM Call 82,800 136.57 2,554 101.98 n/a n/a n/a
2022-08-12 2022-06-30 13F SOUTHWEST AIRLS COM Call 35,000 -77.69 1,264 -82.41 n/a n/a n/a
2022-05-12 2022-03-31 13F SOUTHWEST AIRLS COM Call 156,900 766.85 7,186 827.23 n/a n/a n/a
2022-02-10 2021-12-31 13F SOUTHWEST AIRLS COM Call 18,100 -12.56 775 -27.16 n/a n/a n/a
2021-11-12 2021-09-30 13F SOUTHWEST AIRLS COM Call 20,700 -86.04 1,065 -86.49 n/a n/a n/a
2021-08-12 2021-06-30 13F SOUTHWEST AIRLS COM Call 148,300 -15.69 7,873 -26.69 n/a n/a n/a
2021-05-14 2021-03-31 13F SOUTHWEST AIRLS COM Call 175,900 18.61 10,740 36.42 n/a n/a n/a
2019-08-12 2019-06-30 13F Southwest Airlines COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-13 2019-03-31 13F/A Southwest Airlines COM Call 7,900 -74.35 410 -71.37 n/a n/a n/a
2019-05-13 2019-03-31 13F Southwest Airlines COM Call 30,800 1,432 n/a n/a n/a
2019-02-13 2018-12-31 13F Southwest Airlines COM Call 30,800 -74.38 1,432 -80.92 n/a n/a n/a
2018-11-14 2018-09-30 13F Southwest Airlines COM Call 120,200 70.98 7,506 109.84 n/a n/a n/a
2018-08-14 2018-06-30 13F Southwest Airlines COM Call 70,300 -41.51 3,577 -52.34 n/a n/a n/a
2018-05-15 2018-03-31 13F Southwest Airlines COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-09 2017-12-31 13F Southwest Airlines COM Call 9,400 -77.46 615 -73.65 n/a n/a n/a
2017-11-13 2017-09-30 13F Southwest Airlines COM Call 41,700 -67.85 2,334 -71.04 n/a n/a n/a
2017-08-10 2017-06-30 13F Southwest Airlines COM Call 129,700 -12.78 8,060 0.83 n/a n/a n/a
2017-05-03 2017-03-31 13F Southwest Airlines COM Call 148,700 82.90 7,994 97.29 n/a n/a n/a
2017-02-08 2016-12-31 13F Southwest Airlines COM Call 81,300 -45.33 4,052 -49.31 n/a n/a n/a
2016-05-02 2016-03-31 13F Southwest Airlines COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-01-28 2015-12-31 13F Southwest Airlines COM Call 171,400 -50.51 7,380 -43.98 n/a n/a n/a
2015-10-27 2015-09-30 13F Southwest Airlines COM Call 346,300 7.55 13,173 23.63 n/a n/a n/a
2015-07-28 2015-06-30 13F Southwest Airlines COM Call 322,000 15.74 10,655 -13.54 n/a n/a n/a
2015-04-28 2015-03-31 13F Southwest Airlines COM Call 278,200 -13.60 12,324 15.66 n/a n/a n/a
2015-01-28 2014-12-31 13F Southwest Airlines COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-10-31 2014-09-30 13F Southwest Airlines COM Call 258,100 2.22 8,716 28.52 n/a n/a n/a
2014-08-01 2014-06-30 13F Southwest Airlines COM Call 252,500 8.65 6,782 23.60 n/a n/a n/a
2014-05-14 2014-03-31 13F Southwest Airlines COM Call 232,400 409.65 5,487 538.77 n/a n/a n/a
2014-01-31 2013-12-31 13F Southwest Airlines COM Call 45,600 188.61 859 273.48 n/a n/a n/a
2013-10-31 2013-09-30 13F Southwest Airlines COM Call 15,800 230 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F SOUTHWEST AIRLS CO COM SOUTHWEST AIRLS CO COM Put 125,900 -71.92 4,730 -74.47 n/a n/a n/a
2026-02-17 2025-12-31 13F SOUTHWEST AIRLS CO COM SOUTHWEST AIRLS CO COM Put 448,300 -5.80 18,528 22.02 n/a n/a n/a
2025-11-13 2025-09-30 13F SOUTHWEST AIRLS COM Put 475,900 0.36 15,186 -1.29 n/a n/a n/a
2025-08-13 2025-06-30 13F SOUTHWEST AIRLS COM Put 474,200 301.18 15,383 287.58 n/a n/a n/a
2025-05-14 2025-03-31 13F SOUTHWEST AIRLS COM Put 118,200 -84.10 3,969 -84.12 n/a n/a n/a
2025-02-13 2024-12-31 13F SOUTHWEST AIRLS COM Put 743,500 18.17 24,996 34.08 n/a n/a n/a
2024-11-13 2024-09-30 13F SOUTHWEST AIRLS COM Put 629,200 -4.61 18,643 -1.21 n/a n/a n/a
2024-08-13 2024-06-30 13F SOUTHWEST AIRLS COM Put 659,600 -51.36 18,871 -52.33 n/a n/a n/a
2024-05-15 2024-03-31 13F SOUTHWEST AIRLS COM Put 1,356,200 -53.93 39,587 -53.44 n/a n/a n/a
2024-02-14 2023-12-31 13F SOUTHWEST AIRLS COM Put 2,943,900 580.51 85,020 626.04 n/a n/a n/a
2023-11-14 2023-09-30 13F SOUTHWEST AIRLS COM Put 432,600 -60.82 11,710 -70.71 n/a n/a n/a
2023-08-14 2023-06-30 13F SOUTHWEST AIRLS COM Put 1,104,200 29.88 39,983 44.53 n/a n/a n/a
2023-05-15 2023-03-31 13F SOUTHWEST AIRLS COM Put 850,200 621.12 27,666 597.03 n/a n/a n/a
2023-02-13 2022-12-31 13F SOUTHWEST AIRLS COM Put 117,900 11.86 3,970 22.12 n/a n/a n/a
2022-11-14 2022-09-30 13F SOUTHWEST AIRLS COM Put 105,400 9.79 3,251 -6.26 n/a n/a n/a
2022-08-12 2022-06-30 13F SOUTHWEST AIRLS COM Put 96,000 -38.54 3,468 -51.53 n/a n/a n/a
2022-05-12 2022-03-31 13F SOUTHWEST AIRLS COM Put 156,200 66.88 7,154 78.42 n/a n/a n/a
2022-02-10 2021-12-31 13F SOUTHWEST AIRLS COM Put 93,600 -4.29 4,010 -20.28 n/a n/a n/a
2021-11-12 2021-09-30 13F SOUTHWEST AIRLS COM Put 97,800 -61.93 5,030 -63.13 n/a n/a n/a
2021-08-12 2021-06-30 13F SOUTHWEST AIRLS COM Put 256,900 30.94 13,639 13.85 n/a n/a n/a
2021-05-14 2021-03-31 13F SOUTHWEST AIRLS COM Put 196,200 -23.63 11,980 -12.16 n/a n/a n/a
2020-05-13 2020-03-31 13F Southwest Airlines COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-13 2019-12-31 13F Southwest Airlines COM Put 18,800 1,015 n/a n/a n/a
2019-08-12 2019-06-30 13F Southwest Airlines COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-13 2019-03-31 13F Southwest Airlines COM Put 46,600 0.00 2,166 0.00 n/a n/a n/a
2019-02-13 2018-12-31 13F Southwest Airlines COM Put 46,600 -62.81 2,166 -72.32 n/a n/a n/a
2018-11-14 2018-09-30 13F Southwest Airlines COM Put 125,300 201.93 7,825 270.50 n/a n/a n/a
2018-08-14 2018-06-30 13F Southwest Airlines COM Put 41,500 -66.88 2,112 -73.01 n/a n/a n/a
2018-05-15 2018-03-31 13F Southwest Airlines COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-09 2017-12-31 13F Southwest Airlines COM Put 25,800 -60.97 1,689 -54.35 n/a n/a n/a
2017-11-13 2017-09-30 13F Southwest Airlines COM Put 66,100 -19.39 3,700 -27.38 n/a n/a n/a
2017-08-10 2017-06-30 13F Southwest Airlines COM Put 82,000 -33.50 5,095 -23.14 n/a n/a n/a
2017-05-03 2017-03-31 13F Southwest Airlines COM Put 123,300 7.03 6,629 15.45 n/a n/a n/a
2017-02-08 2016-12-31 13F Southwest Airlines COM Put 115,200 -6.57 5,742 -13.38 n/a n/a n/a
2016-07-27 2016-06-30 13F Southwest Airlines COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-02 2016-03-31 13F Southwest Airlines COM Put 9,000 -85.17 403 -84.58 n/a n/a n/a
2016-01-28 2015-12-31 13F Southwest Airlines COM Put 60,700 -49.21 2,614 -42.50 n/a n/a n/a
2015-10-27 2015-09-30 13F Southwest Airlines COM Put 119,500 -23.35 4,546 -11.88 n/a n/a n/a
2015-07-28 2015-06-30 13F Southwest Airlines COM Put 155,900 70.57 5,159 27.41 n/a n/a n/a
2015-04-28 2015-03-31 13F Southwest Airlines COM Put 91,400 -41.37 4,049 -21.52 n/a n/a n/a
2015-01-28 2014-12-31 13F Southwest Airlines COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2014-10-31 2014-09-30 13F Southwest Airlines COM Put 92,200 19.90 3,114 50.73 n/a n/a n/a
2014-08-01 2014-06-30 13F Southwest Airlines COM Put 76,900 1.72 2,066 15.74 n/a n/a n/a
2014-05-14 2014-03-31 13F Southwest Airlines COM Put 75,600 220.34 1,785 301.12 n/a n/a n/a
2014-01-31 2013-12-31 13F Southwest Airlines COM Put 23,600 17.41 445 51.88 n/a n/a n/a
2013-10-31 2013-09-30 13F Southwest Airlines COM Put 20,100 293 n/a n/a n/a
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.