사우스웨스트 항공(주)
MX ˙ BMV ˙ US8447411088
SecurityMX:LUV / Southwest Airlines Co.
InstitutionWs Management Lllp
Latest Disclosed Ownership546,511 shares
Latest Disclosed Value $ 20,532,418
Ws Management Lllp ownership in LUV / Southwest Airlines Co.

On May 14, 2026 - Ws Management Lllp filed a 13F-HR form disclosing ownership of 546,511 shares of Southwest Airlines Co. (MX:LUV) valued at $20,532,418 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 550,000 shares of Southwest Airlines Co.. This represents a change in shares of -0.63% during the quarter.

Ws Management Lllp 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 93,200 of underlying shares valued at $3,501,524 USD and put options representing 0 of underlying shares valued at $0 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 COM 844741108 546,511 -3,489 -0.63 20,532 -9.67 1.8125
2026-02-17 2025-12-31 13F SOUTHWEST AIRLS COM 844741108 550,000 50,000 10.00 22,732 42.47 1.8618
2025-11-13 2025-09-30 13F SOUTHWEST AIRLS COM 844741108 500,000 0 0.00 15,955 -1.63 1.7360
2025-08-14 2025-06-30 13F SOUTHWEST AIRLS COM 844741108 500,000 -136,640 -21.46 16,220 -24.13 2.2467
2025-05-14 2025-03-31 13F SOUTHWEST AIRLS COM 844741108 636,640 36,640 6.11 21,378 5.98 2.3866
2025-02-14 2024-12-31 13F SOUTHWEST AIRLS COM 844741108 600,000 600,000 20,172 1.8725
2023-02-14 2022-12-31 13F SOUTHWEST AIRLS COM 844741108 0 -95,334 -100.00 0 -100.00
2022-11-14 2022-09-30 13F SOUTHWEST AIRLS COM 844741108 95,334 0 0.00 2,940 -14.61 0.2667
2022-08-15 2022-06-30 13F SOUTHWEST AIRLS COM 844741108 95,334 0 0.00 3,443 -21.14 0.2795
2022-05-12 2022-03-31 13F SOUTHWEST AIRLS COM 844741108 95,334 0 0.00 4,366 6.90 0.2138
2022-02-11 2021-12-31 13F SOUTHWEST AIRLS COM 844741108 95,334 0 0.00 4,084 -16.70 0.3252
2021-11-12 2021-09-30 13F SOUTHWEST AIRLS COM 844741108 95,334 0 0.00 4,903 -3.12 0.5188
2021-08-12 2021-06-30 13F SOUTHWEST AIRLS COM 844741108 95,334 0 0.00 5,061 -13.06 0.4993
2021-05-13 2021-03-31 13F SOUTHWEST AIRLS COM 844741108 95,334 -13,873 -12.70 5,821 14.36 0.6036
2021-02-11 2020-12-31 13F SOUTHWEST AIRLS COM 844741108 109,207 -50,000 -31.41 5,090 -14.74 0.5285
2020-11-12 2020-09-30 13F SOUTHWEST AIRLS COM 844741108 159,207 0 0.00 5,970 9.70 0.6439
2020-08-13 2020-06-30 13F SOUTHWEST AIRLS COM 844741108 159,207 -551,045 -77.58 5,442 -78.48 0.6672
2020-05-13 2020-03-31 13F SOUTHWEST AIRLS COM 844741108 710,252 -2,737 -0.38 25,292 -34.28 2.7609
2020-02-12 2019-12-31 13F SOUTHWEST AIRLS COM 844741108 712,989 -176,481 -19.84 38,487 -19.89 3.2978
2019-11-13 2019-09-30 13F SOUTHWEST AIRLS COM 844741108 889,470 -115,139 -11.46 48,040 -5.83 3.7507
2019-08-13 2019-06-30 13F SOUTHWEST AIRLS COM 844741108 1,004,609 -115,677 -10.33 51,014 -12.28 3.3080
2019-05-13 2019-03-31 13F SOUTHWEST AIRLS COM 844741108 1,120,286 -194,899 -14.82 58,154 -4.87 3.5225
2019-02-12 2018-12-31 13F SOUTHWEST AIRLS COM 844741108 1,315,185 -272,702 -17.17 61,130 -38.35 2.9764
2018-11-13 2018-09-30 13F SOUTHWEST AIRLS COM 844741108 1,587,887 0 0.00 99,164 22.74 3.2564
2018-08-13 2018-06-30 13F SOUTHWEST AIRLS COM 844741108 1,587,887 -278,013 -14.90 80,792 -24.41 2.2793
2018-05-11 2018-03-31 13F SOUTHWEST AIRLS COM 844741108 1,865,900 0 0.00 106,879 -12.48 2.8231
2018-02-13 2017-12-31 13F SOUTHWEST AIRLS COM 844741108 1,865,900 -274,800 -12.84 122,123 1.91 3.5907
2017-11-13 2017-09-30 13F SOUTHWEST AIRLS COM 844741108 2,140,700 150,000 7.54 119,836 -3.13 2.9867
2017-08-11 2017-06-30 13F SOUTHWEST AIRLS COM 844741108 1,990,700 0 0.00 123,702 15.59 4.5985
2017-05-10 2017-03-31 13F SOUTHWEST AIRLS COM 844741108 1,990,700 365,000 22.45 107,020 32.08 4.2253
2017-02-10 2016-12-31 13F SOUTHWEST AIRLS COM 844741108 1,625,700 -13,100 -0.80 81,025 27.13 3.2879
2016-11-14 2016-09-30 13F SOUTHWEST AIRLS COM 844741108 1,638,800 0 0.00 63,733 -0.82 2.4416
2016-08-12 2016-06-30 13F SOUTHWEST AIRLS COM 844741108 1,638,800 -139,200 -7.83 64,257 -19.33 2.2262
2016-05-11 2016-03-31 13F SOUTHWEST AIRLS COM 844741108 1,778,000 559,379 45.90 79,654 51.80 3.0870
2016-02-12 2015-12-31 13F SOUTHWEST AIRLS COM 844741108 1,218,621 771,921 172.81 52,474 208.82 1.8289
2015-11-09 2015-09-30 13F SOUTHWEST AIRLS COM 844741108 446,700 180,000 67.49 16,992 92.54 0.6722
2015-08-12 2015-06-30 13F SOUTHWEST AIRLS COM 844741108 266,700 3,400 1.29 8,825 -24.34 0.3061
2015-05-13 2015-03-31 13F SOUTHWEST AIRLS COM 844741108 263,300 -16,700 -5.96 11,664 -1.57 0.3902
2015-02-11 2014-12-31 13F SOUTHWEST AIRLS COM 844741108 280,000 -873,200 -75.72 11,850 -69.57 0.3711
2014-11-13 2014-09-30 13F SOUTHWEST AIRLS COM 844741108 1,153,200 -300,000 -20.64 38,944 -0.23 1.2502
2014-08-13 2014-06-30 13F SOUTHWEST AIRLS COM 844741108 1,453,200 -444,700 -23.43 39,033 -12.89 1.1879
2014-05-14 2014-03-31 13F SOUTHWEST AIRLS COM 844741108 1,897,900 0 0.00 44,809 25.32 1.4197
2014-02-13 2013-12-31 13F SOUTHWEST AIRLS COM 844741108 1,897,900 22,000 1.17 35,756 30.91 1.1854
2013-11-13 2013-09-30 13F SOUTHWEST AIRLS COM 844741108 1,875,900 0 0.00 27,313 12.96 0.9452
2013-08-13 2013-06-30 13F SOUTHWEST AIRLS COM 844741108 1,875,900 1,875,900 24,180 0.7748
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 COM Call 93,200 3,502 n/a n/a n/a
2017-08-11 2017-06-30 13F SOUTHWEST AIRLS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-05-10 2017-03-31 13F SOUTHWEST AIRLS COM Call 160,000 8,602 n/a n/a n/a
2016-08-12 2016-06-30 13F SOUTHWEST AIRLS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-11 2016-03-31 13F SOUTHWEST AIRLS COM Call 500,000 66.67 22,400 73.40 n/a n/a n/a
2016-02-12 2015-12-31 13F SOUTHWEST AIRLS COM Call 300,000 12,918 n/a n/a n/a
2015-11-09 2015-09-30 13F SOUTHWEST AIRLS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-08-12 2015-06-30 13F SOUTHWEST AIRLS COM Call 510,000 16,876 n/a n/a n/a
2015-02-11 2014-12-31 13F SOUTHWEST AIRLS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-11-13 2014-09-30 13F SOUTHWEST AIRLS COM Call 100,000 3,377 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
(%)
2018-02-13 2017-12-31 13F SOUTHWEST AIRLS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-13 2017-09-30 13F SOUTHWEST AIRLS COM Put 150,000 8,397 n/a n/a n/a
2016-08-12 2016-06-30 13F SOUTHWEST AIRLS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-11 2016-03-31 13F SOUTHWEST AIRLS COM Put 200,000 100.00 8,960 108.08 n/a n/a n/a
2016-02-12 2015-12-31 13F SOUTHWEST AIRLS COM Put 100,000 4,306 n/a n/a n/a
2015-02-11 2014-12-31 13F SOUTHWEST AIRLS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2014-11-13 2014-09-30 13F SOUTHWEST AIRLS COM Put 300,000 10,131 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.