Southwest Airlines Co.
US ˙ NYSE ˙ US8447411088

SecurityLUV / Southwest Airlines Co.
InstitutionWalleye Capital LLC
Latest Disclosed Ownership402,623 shares
Latest Disclosed Value $ 15,126,546
Walleye Capital LLC ownership in LUV / Southwest Airlines Co.

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 402,623 shares of Southwest Airlines Co. (US:LUV) valued at $15,126,546 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 45,766 shares of Southwest Airlines Co.. This represents a change in shares of 779.74% during the quarter. The current value of the position is $16,455,202 USD.

Walleye Capital LLC 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 28,300 of underlying shares valued at $1,063,231 USD and put options representing 48,800 of underlying shares valued at $1,833,416 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.

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)
2026-05-13 2026-03-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 402,623 356,857 779.74 15,127 699.89 0.0629
2026-05-08 2026-03-31 13F SOUTHWEST AIRLS COM 844741108 402,623 356,857 15,127 0.0629
2026-02-13 2025-12-31 13F SOUTHWEST AIRLS COM 844741108 45,766 45,766 1,892 0.0058
2025-11-14 2025-09-30 13F SOUTHWEST AIRLS COM 844741108 0 -32,164 -100.00 0 -100.00
2025-08-13 2025-06-30 13F SOUTHWEST AIRLS COM 844741108 32,164 13,756 74.73 1,043 68.77 0.0041
2025-05-14 2025-03-31 13F SOUTHWEST AIRLS COM 844741108 18,408 -16,200 -46.81 618 -46.86 0.0028
2025-02-13 2024-12-31 13F SOUTHWEST AIRLS COM 844741108 34,608 -109,941 -76.06 1,164 -72.84 0.0028
2024-11-14 2024-09-30 13F SOUTHWEST AIRLS COM 844741108 144,549 81,792 130.33 4,283 138.55 0.0089
2024-08-14 2024-06-30 13F SOUTHWEST AIRLS COM 844741108 62,757 -29,447 -31.94 1,795 -33.30 0.0032
2024-05-15 2024-03-31 13F SOUTHWEST AIRLS COM 844741108 92,204 20,979 29.45 2,691 30.89 0.0048
2024-02-14 2023-12-31 13F SOUTHWEST AIRLS COM 844741108 71,225 71,225 2,057 0.0044
2023-11-21 2023-09-30 13F/A-1 SOUTHWEST AIRLS COM 844741108 0 -62,669 -100.00 0 -100.00
2023-11-14 2023-09-30 13F SOUTHWEST AIRLS COM 844741108 0 -62,669 0
2023-08-14 2023-06-30 13F SOUTHWEST AIRLS COM 844741108 62,669 -59,428 -48.67 2,269 -42.89 0.0082
2023-05-15 2023-03-31 13F SOUTHWEST AIRLS COM 844741108 122,097 -107,079 -46.72 3,973 -48.51 0.0595
2023-02-14 2022-12-31 13F SOUTHWEST AIRLS COM 844741108 229,176 157,626 220.30 7,716 249.61 0.1407
2022-11-14 2022-09-30 13F SOUTHWEST AIRLS COM 844741108 71,550 54,069 309.30 2,207 249.76 0.0421
2022-08-19 2022-06-30 13F/A-1 SOUTHWEST AIRLS COM 844741108 17,481 17,481 631 0.0174
2022-08-08 2022-06-30 13F SOUTHWEST AIRLS COM 844741108 17,481 17,481 631 0.0174
2019-08-14 2019-06-30 13F SOUTHWEST AIRLS COM 844741108 0 -130 -100.00 0 -100.00
2019-08-14 2019-03-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 130 130 7 0.0012
2019-05-15 2019-03-31 13F SOUTHWEST AIRLS COM 844741108 130 7
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
(%)
2026-05-13 2026-03-31 13F/A SOUTHWEST AIRLS COM Call 28,300 -50.00 1,063 -54.55 n/a n/a n/a
2026-05-08 2026-03-31 13F SOUTHWEST AIRLS COM Call 28,300 1,063 n/a n/a n/a
2026-02-13 2025-12-31 13F SOUTHWEST AIRLS COM Call 56,600 11.42 2,339 44.29 n/a n/a n/a
2025-11-14 2025-09-30 13F SOUTHWEST AIRLS COM Call 50,800 -63.22 1,621 -63.81 n/a n/a n/a
2025-08-13 2025-06-30 13F SOUTHWEST AIRLS COM Call 138,100 -33.61 4,480 -35.87 n/a n/a n/a
2025-05-14 2025-03-31 13F SOUTHWEST AIRLS COM Call 208,000 130.34 6,985 130.12 n/a n/a n/a
2025-02-13 2024-12-31 13F SOUTHWEST AIRLS COM Call 90,300 1.92 3,036 15.62 n/a n/a n/a
2024-11-14 2024-09-30 13F SOUTHWEST AIRLS COM Call 88,600 -29.79 2,625 -27.29 n/a n/a n/a
2024-08-14 2024-06-30 13F SOUTHWEST AIRLS COM Call 126,200 61.59 3,611 58.40 n/a n/a n/a
2024-05-15 2024-03-31 13F SOUTHWEST AIRLS COM Call 78,100 -71.08 2,280 -70.78 n/a n/a n/a
2024-02-14 2023-12-31 13F SOUTHWEST AIRLS COM Call 270,100 143.33 7,800 159.65 n/a n/a n/a
2023-11-21 2023-09-30 13F/A SOUTHWEST AIRLS COM Call 111,000 170.73 3,005 102.43 n/a n/a n/a
2023-11-14 2023-09-30 13F SOUTHWEST AIRLS COM Call 111,000 3,005 n/a n/a n/a
2023-08-14 2023-06-30 13F SOUTHWEST AIRLS COM Call 41,000 485.71 1,485 553.74 n/a n/a n/a
2023-05-15 2023-03-31 13F SOUTHWEST AIRLS COM Call 7,000 -54.55 228 -56.18 n/a n/a n/a
2023-02-14 2022-12-31 13F SOUTHWEST AIRLS COM Call 15,400 -15.38 519 -7.66 n/a n/a n/a
2022-11-14 2022-09-30 13F SOUTHWEST AIRLS COM Call 18,200 561 n/a n/a n/a
2019-08-14 2019-06-30 13F SOUTHWEST AIRLS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-03-31 13F/A SOUTHWEST AIRLS COM Call 8,500 441 n/a n/a n/a
2019-05-15 2019-03-31 13F SOUTHWEST AIRLS COM Call 8,500 441 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
(%)
2026-05-13 2026-03-31 13F/A SOUTHWEST AIRLS COM Put 48,800 -44.48 1,833 -49.53 n/a n/a n/a
2026-05-08 2026-03-31 13F SOUTHWEST AIRLS COM Put 48,800 1,833 n/a n/a n/a
2026-02-13 2025-12-31 13F SOUTHWEST AIRLS COM Put 87,900 -70.41 3,633 -61.69 n/a n/a n/a
2025-11-14 2025-09-30 13F SOUTHWEST AIRLS COM Put 297,100 -9.92 9,480 -11.39 n/a n/a n/a
2025-08-13 2025-06-30 13F SOUTHWEST AIRLS COM Put 329,800 179.25 10,699 169.81 n/a n/a n/a
2025-05-14 2025-03-31 13F SOUTHWEST AIRLS COM Put 118,100 -57.69 3,966 -57.74 n/a n/a n/a
2025-02-13 2024-12-31 13F SOUTHWEST AIRLS COM Put 279,100 -30.73 9,383 -21.40 n/a n/a n/a
2024-11-14 2024-09-30 13F SOUTHWEST AIRLS COM Put 402,900 16.45 11,938 20.59 n/a n/a n/a
2024-08-14 2024-06-30 13F SOUTHWEST AIRLS COM Put 346,000 42.68 9,899 39.86 n/a n/a n/a
2024-05-15 2024-03-31 13F SOUTHWEST AIRLS COM Put 242,500 -62.49 7,079 -62.09 n/a n/a n/a
2024-02-14 2023-12-31 13F SOUTHWEST AIRLS COM Put 646,500 553.69 18,671 597.42 n/a n/a n/a
2023-11-21 2023-09-30 13F/A SOUTHWEST AIRLS COM Put 98,900 -27.44 2,677 -45.75 n/a n/a n/a
2023-11-14 2023-09-30 13F SOUTHWEST AIRLS COM Put 98,900 2,677 n/a n/a n/a
2023-08-14 2023-06-30 13F SOUTHWEST AIRLS COM Put 136,300 218.46 4,935 254.53 n/a n/a n/a
2023-05-15 2023-03-31 13F SOUTHWEST AIRLS COM Put 42,800 37.18 1,393 32.57 n/a n/a n/a
2023-02-14 2022-12-31 13F SOUTHWEST AIRLS COM Put 31,200 40.54 1,051 53.28 n/a n/a n/a
2022-11-14 2022-09-30 13F SOUTHWEST AIRLS COM Put 22,200 685 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.