Southwest Airlines Co.
DE ˙ XTRA ˙ US8447411088
35,00 € ↓ -1,12 (-3,10%)
2026-06-04
DEL PRIS
SecurityDE:SWN / Southwest Airlines Co.
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership683,554 shares
Latest Disclosed Value $ 25,681,124
Bnp Paribas Arbitrage, Sa ownership in SWN / Southwest Airlines Co.

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 683,554 shares of Southwest Airlines Co. (DE:SWN) valued at $22,071,959 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 1,111,706 shares of Southwest Airlines Co.. This represents a change in shares of -38.51% during the quarter. The current value of the position is $23,924,390 USD.

Bnp Paribas Arbitrage, Sa has a history of taking positions in derivatives of the underlying security (SWN) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 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.

DE:SWN / 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)
2026-05-12 2026-03-31 13F Southwest Airlines Equity 844741108 683,554 -428,152 -38.51 25,681 -44.11 0.0013
2026-02-10 2025-12-31 13F Southwest Airlines Equity 844741108 1,111,706 20,231 1.85 45,947 31.92 0.0208
2025-11-13 2025-09-30 13F Southwest Airlines Equity 844741108 1,091,475 756,039 225.39 34,829 220.08 0.0186
2025-08-14 2025-06-30 13F Southwest Airlines Equity 844741108 335,436 -677,264 -66.88 10,882 -68.00 0.0062
2025-05-14 2025-03-31 13F Southwest Airlines Equity 844741108 1,012,700 279,504 38.12 34,006 37.96 0.0200
2025-02-14 2024-12-31 13F Southwest Airlines Equity 844741108 733,196 175,336 31.43 24,650 49.13 0.0138
2024-11-13 2024-09-30 13F Southwest Airlines Equity 844741108 557,860 -606,718 -52.10 16,529 -50.39 0.0111
2024-08-13 2024-06-30 13F Southwest Airlines Equity 844741108 1,164,578 65,919 6.00 33,319 3.89 0.0271
2024-05-01 2024-03-31 13F Southwest Airlines Equity 844741108 1,098,659 399,518 57.14 32,070 58.83 0.0282
2024-02-14 2023-12-31 13F/A-2 Southwest Airlines Equity 844741108 699,141 -299,268 -29.97 20,191 -25.29 0.0229
2024-02-07 2023-12-31 13F/A-1 Southwest Airlines Equity 844741108 699,141 -299,268 20,191 0.0028
2024-02-07 2023-12-31 13F Southwest Airlines Equity 844741108 699,141 20,191
2023-11-14 2023-09-30 13F Southwest Airlines Equity 844741108 998,409 511,022 104.85 27,027 53.14 0.0347
2023-08-09 2023-06-30 13F Southwest Airlines Equity 844741108 487,387 -1,041,342 -68.12 17,648 -64.52 0.0221
2023-05-12 2023-03-31 13F SOUTHWEST AIRLINES EQUITY 844741108 1,528,729 761,707 99.31 49,745 92.62 0.0697
2023-02-14 2022-12-31 13F Southwest Airlines Equity 844741108 767,022 767,022 25,826 0.0397
2022-11-15 2022-09-30 13F/A-1 Southwest Airlines Equity 844741108 0 -824,174 -100.00 0 -100.00
2022-11-15 2022-09-30 13F Southwest Airlines Equity 844741108 0 -824,174 0
2022-08-12 2022-06-30 13F Southwest Airlines Equity 844741108 824,174 299,755 57.16 29,769 23.94 0.0465
2022-05-18 2022-03-31 13F/A-1 Southwest Airlines Equity 844741108 524,419 -2,775 -0.53 24,018 6.35 0.0323
2022-02-09 2021-12-31 13F SOUTHWEST AIRLINES EQUITY 844741108 527,194 -199,095 -27.41 22,585 -39.54 0.0322
2021-11-16 2021-09-30 13F/A-1 SOUTHWEST AIRLINES EQUITY 844741108 726,289 -52,905 -6.79 37,353 -9.70 0.0529
2021-11-12 2021-09-30 13F SOUTHWEST AIRLINES EQUITY 844741108 269,065 -510,129 10,090 0.0000
2021-08-10 2021-06-30 13F SOUTHWEST AIRLINES EQUITY 844741108 779,194 625,301 406.32 41,367 340.26 0.0547
2021-05-07 2021-03-31 13F SOUTHWEST AIRLINES EQUITY 844741108 153,893 -103,052 -40.11 9,397 -21.54 0.0137
2021-02-10 2020-12-31 13F SOUTHWEST AIRLINES EQUITY 844741108 256,945 -12,120 -4.50 11,976 18.70 0.0223
2020-10-30 2020-09-30 13F SOUTHWEST AIRLINES EQUITY 844741108 269,065 154,918 135.72 10,090 158.63 0.0144
2020-08-06 2020-06-30 13F SOUTHWEST AIRLINES EQUITY 844741108 114,147 -3,931,548 -97.18 3,902 -97.29 0.0069
2020-05-13 2020-03-31 13F SOUTHWEST AIRLINES EQUITY 844741108 4,045,695 379,326 10.35 144,067 -27.21 0.2955
2020-02-12 2019-12-31 13F SOUTHWEST AIRLINES EQUITY 844741108 3,666,369 226,258 6.58 197,911 6.52 0.3604
2019-11-07 2019-09-30 13F SOUTHWEST AIRLINES EQUITY 844741108 3,440,111 43,695 1.29 185,800 7.73 0.3298
2019-07-30 2019-06-30 13F SOUTHWEST AIRLINES EQUITY 844741108 3,396,416 -518,583 -13.25 172,470 -15.13 0.3436
2019-04-25 2019-03-31 13F SOUTHWEST AIRLINES EQUITY 844741108 3,914,999 507,925 14.91 203,228 28.33 0.4393
2019-02-12 2018-12-31 13F SOUTHWEST AIRLINES EQUITY 844741108 3,407,074 -35,225 -1.02 158,361 -26.33 0.3741
2018-11-07 2018-09-30 13F SOUTHWEST AIRLINES EQUITY 844741108 3,442,299 -114,538 -3.22 214,972 18.79 0.3174
2018-07-25 2018-06-30 13F SOUTHWEST AIRLINES EQUITY 844741108 3,556,837 3,180,163 844.27 180,972 738.80 0.3012
2018-05-11 2018-03-31 13F SOUTHWEST AIRLINES EQUITY 844741108 376,674 151,982 67.64 21,576 46.71 0.0404
2018-03-05 2017-12-31 13F/A-1 SOUTHWEST AIRLINES EQUITY 844741108 224,692 -234,476 -51.07 14,706 -42.79 0.0261
2018-02-01 2017-12-31 13F SOUTHWEST AIRLINES EQUITY 844741108 224,692 -234,476 14,706
2017-11-03 2017-09-30 13F SOUTHWEST AIRLS STOCK 844741108 459,168 -119,544 -20.66 25,704 -28.52 0.0628
2017-08-03 2017-06-30 13F SOUTHWEST AIRLS STOCK 844741108 578,712 -185,805 -24.30 35,961 -12.50 0.1084
2017-05-03 2017-03-31 13F SOUTHWEST AIRLS STOCK 844741108 764,517 116,290 17.94 41,100 27.22 0.1086
2017-02-14 2016-12-31 13F SOUTHWEST AIRLS STOCK 844741108 648,227 -175,415 -21.30 32,308 0.86 0.1513
2016-10-05 2016-09-30 13F * SOUTHWEST AIRLS CO COM STOCK 844741108 823,642 58,396 7.63 32,031 6.75 0.1318
2016-07-06 2016-06-30 13F * SOUTHWEST AIRLS CO COM STOCK 844741108 765,246 -204,196 -21.06 30,005 -30.91 0.1354
2016-04-22 2016-03-31 13F * SOUTHWEST AIRLS CO COM STOCK 844741108 969,442 500,783 106.85 43,431 115.22 0.1837
2016-04-19 2015-12-31 13F/A-1 * SOUTHWEST AIRLS CO COM STOCK 844741108 468,659 -132,300 -22.01 20,180 -11.72 0.0982
2016-02-10 2015-12-31 13F * SOUTHWEST AIRLS CO COM STOCK 844741108 468,486 20,173
2015-11-13 2015-09-30 13F * SOUTHWEST AIRLS CO COM STOCK 844741108 600,959 51,244 9.32 22,860 25.67 0.0573
2015-08-14 2015-06-30 13F SOUTHWEST AIRLS CO COM STOCK 844741108 549,715 -39,307 -6.67 18,190 -30.29 0.0507
2015-05-15 2015-03-31 13F * SOUTHWEST AIRLS CO COM STOCK 844741108 589,022 -253,659 -30.10 26,094 -26.83 0.0722
2015-03-10 2014-12-31 13F/A-1 * SOUTHWEST AIRLS CO COM STOCK 844741108 842,681 176,196 26.44 35,662 58.45 0.1264
2015-02-11 2014-12-31 13F * SOUTHWEST AIRLS CO COM STOCK 844741108 842,681 35,662
2014-11-12 2014-09-30 13F * SOUTHWEST AIRLS CO COM STOCK 844741108 666,485 289,836 76.95 22,507 122.49 0.0196
2014-08-14 2014-06-30 13F/A-1 * SOUTHWEST AIRLS CO COM STOCK 844741108 376,649 -703,791 -65.14 10,117 -61.26 0.0095
2014-08-14 2014-06-30 13F SOUTHWEST AIRLS CO COM STOCK 844741108 376,649 10,117
2014-05-13 2014-03-31 13F SOUTHWEST AIRLS STOCK 844741108 1,080,440 660,555 157.32 26,114 230.14 0.0203
2014-04-02 2013-12-31 13F/A-1 SOUTHWEST AIRLS STOCK 844741108 419,885 -26,506 -5.94 7,911 21.71 0.0058
2014-02-12 2013-12-31 13F SOUTHWEST AIRLS STOCK 844741108 419,885 7,911
2013-11-13 2013-09-30 13F SOUTHWEST AIRLS STOCK 844741108 446,391 366,940 461.84 6,499 534.67 0.0047
2013-08-13 2013-06-30 13F SOUTHWEST AIRLS STOCK 844741108 79,451 79,451 1,024 0.0007
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
(%)
2025-08-14 2025-06-30 13F Southwest Airlines Option Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-14 2025-03-31 13F Southwest Airlines Option Call 600 -3.38 2,015 -3.50 n/a n/a n/a
2025-02-14 2024-12-31 13F Southwest Airlines Option Call 621 0.00 2,088 13.42 n/a n/a n/a
2024-11-13 2024-09-30 13F Southwest Airlines Option Call 621 1,840 n/a n/a n/a
2024-08-13 2024-06-30 13F Southwest Airlines Option Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-01 2024-03-31 13F Southwest Airlines Option Call 451 -54.90 1,316 -54.43 n/a n/a n/a
2024-02-14 2023-12-31 13F/A Southwest Airlines Option Call 1,000 2,888 n/a n/a n/a
2024-02-07 2023-12-31 13F/A Southwest Airlines Option Call 1,000 2,888 n/a n/a n/a
2024-02-07 2023-12-31 13F Southwest Airlines Option Call 1,000 2,888 n/a n/a n/a
2023-08-09 2023-06-30 13F SOUTHWEST AIRLINES OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-12 2023-03-31 13F SOUTHWEST AIRLINES OPTION Call 100 0.00 325 -3.27 n/a n/a n/a
2023-02-14 2022-12-31 13F Southwest Airlines Option Call 100 337 n/a n/a n/a
2022-02-09 2021-12-31 13F SOUTHWEST AIRLINES OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-12 2021-09-30 13F SOUTHWEST AIRLINES OPTION Call 4,107 4,007.00 15,401 2,805.85 n/a n/a n/a
2021-08-10 2021-06-30 13F SOUTHWEST AIRLINES OPTION Call 100 531 n/a n/a n/a
2021-05-07 2021-03-31 13F SOUTHWEST AIRLINES OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-10 2020-12-31 13F SOUTHWEST AIRLINES OPTION Call 3,275 -20.26 15,265 -0.89 n/a n/a n/a
2020-10-30 2020-09-30 13F SOUTHWEST AIRLINES OPTION Call 4,107 -11.14 15,401 -2.51 n/a n/a n/a
2020-08-06 2020-06-30 13F SOUTHWEST AIRLINES OPTION Call 4,622 -22.08 15,798 -25.21 n/a n/a n/a
2020-05-13 2020-03-31 13F SOUTHWEST AIRLINES OPTION Call 5,932 150.93 21,124 65.54 n/a n/a n/a
2020-02-12 2019-12-31 13F SOUTHWEST AIRLINES OPTION Call 2,364 18,084.62 12,761 18,128.57 n/a n/a n/a
2019-11-07 2019-09-30 13F SOUTHWEST AIRLINES OPTION Call 13 -95.87 70 -95.62 n/a n/a n/a
2019-07-30 2019-06-30 13F SOUTHWEST AIRLINES OPTION Call 315 0.00 1,600 -2.20 n/a n/a n/a
2019-04-25 2019-03-31 13F SOUTHWEST AIRLINES OPTION Call 315 -11.76 1,635 -1.45 n/a n/a n/a
2019-02-12 2018-12-31 13F SOUTHWEST AIRLINES OPTION Call 357 0.00 1,659 -25.57 n/a n/a n/a
2018-11-07 2018-09-30 13F SOUTHWEST AIRLINES OPTION Call 357 -56.94 2,229 -47.14 n/a n/a n/a
2018-07-25 2018-06-30 13F SOUTHWEST AIRLINES OPTION Call 829 -96.30 4,218 228.68 n/a n/a n/a
2018-05-11 2018-03-31 13F SOUTHWEST AIRLINES OPTION Call 22,400 0.00 1,283 -12.48 n/a n/a n/a
2018-03-05 2017-12-31 13F/A SOUTHWEST AIRLINES OPTION Call 22,400 9,900.00 1,466 1,604.65 n/a n/a n/a
2018-02-01 2017-12-31 13F SOUTHWEST AIRLINES OPTION Call 22,400 1,466 n/a n/a n/a
2017-11-03 2017-09-30 13F SOUTHWEST AIRLS OPTION Call 224 -26.32 86 -57.21 n/a n/a n/a
2017-08-03 2017-06-30 13F SOUTHWEST AIRLS OPTION Call 304 202 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
(%)
2026-05-12 2026-03-31 13F Southwest Airlines Option Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-10 2025-12-31 13F Southwest Airlines Option Put 1,402 248.76 5,794 351.95 n/a n/a n/a
2025-11-13 2025-09-30 13F Southwest Airlines Option Put 402 1,283 n/a n/a n/a
2025-05-14 2025-03-31 13F Southwest Airlines Option Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F Southwest Airlines Option Put 5,896 1.73 19,822 15.43 n/a n/a n/a
2024-11-13 2024-09-30 13F Southwest Airlines Option Put 5,796 55.51 17,174 61.07 n/a n/a n/a
2024-08-13 2024-06-30 13F Southwest Airlines Option Put 3,727 -36.62 10,663 -37.88 n/a n/a n/a
2024-05-01 2024-03-31 13F Southwest Airlines Option Put 5,880 -2.00 17,164 -0.95 n/a n/a n/a
2024-02-14 2023-12-31 13F/A Southwest Airlines Option Put 6,000 500.00 17,328 540.12 n/a n/a n/a
2024-02-07 2023-12-31 13F/A Southwest Airlines Option Put 6,000 17,328 n/a n/a n/a
2024-02-07 2023-12-31 13F Southwest Airlines Option Put 6,000 17,328 n/a n/a n/a
2023-11-14 2023-09-30 13F Southwest Airlines Option Put 1,000 2,707 n/a n/a n/a
2023-08-09 2023-06-30 13F SOUTHWEST AIRLINES OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-12 2023-03-31 13F SOUTHWEST AIRLINES OPTION Put 485 -43.01 1,578 -44.92 n/a n/a n/a
2023-02-14 2022-12-31 13F Southwest Airlines Option Put 851 2,865 n/a n/a n/a
2022-11-15 2022-09-30 13F/A Southwest Airlines Option Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-15 2022-09-30 13F Southwest Airlines Option Put 0 0 n/a n/a n/a
2022-08-12 2022-06-30 13F Southwest Airlines Option Put 1,000 233.33 3,612 162.88 n/a n/a n/a
2022-05-18 2022-03-31 13F/A Southwest Airlines Option Put 300 1,374 n/a n/a n/a
2022-02-09 2021-12-31 13F SOUTHWEST AIRLINES OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-12 2021-09-30 13F SOUTHWEST AIRLINES OPTION Put 8,708 32,655 n/a n/a n/a
2021-08-10 2021-06-30 13F SOUTHWEST AIRLINES OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-07 2021-03-31 13F SOUTHWEST AIRLINES OPTION Put 100 -98.44 611 -97.96 n/a n/a n/a
2021-02-10 2020-12-31 13F SOUTHWEST AIRLINES OPTION Put 6,419 -26.29 29,919 -8.38 n/a n/a n/a
2020-10-30 2020-09-30 13F SOUTHWEST AIRLINES OPTION Put 8,708 4.34 32,655 14.47 n/a n/a n/a
2020-08-06 2020-06-30 13F SOUTHWEST AIRLINES OPTION Put 8,346 104.46 28,527 96.24 n/a n/a n/a
2020-05-13 2020-03-31 13F SOUTHWEST AIRLINES OPTION Put 4,082 -26.04 14,536 -51.21 n/a n/a n/a
2020-02-12 2019-12-31 13F SOUTHWEST AIRLINES OPTION Put 5,519 154.57 29,792 154.43 n/a n/a n/a
2019-11-07 2019-09-30 13F SOUTHWEST AIRLINES OPTION Put 2,168 37.04 11,709 45.76 n/a n/a n/a
2019-07-30 2019-06-30 13F SOUTHWEST AIRLINES OPTION Put 1,582 -20.54 8,033 -22.27 n/a n/a n/a
2019-04-25 2019-03-31 13F SOUTHWEST AIRLINES OPTION Put 1,991 53.75 10,335 71.71 n/a n/a n/a
2019-02-12 2018-12-31 13F SOUTHWEST AIRLINES OPTION Put 1,295 0.00 6,019 -25.57 n/a n/a n/a
2018-11-07 2018-09-30 13F SOUTHWEST AIRLINES OPTION Put 1,295 15.73 8,087 42.05 n/a n/a n/a
2018-07-25 2018-06-30 13F SOUTHWEST AIRLINES OPTION Put 1,119 -97.86 5,693 90.08 n/a n/a n/a
2018-05-11 2018-03-31 13F SOUTHWEST AIRLINES OPTION Put 52,300 3.16 2,996 -9.73 n/a n/a n/a
2018-03-05 2017-12-31 13F/A SOUTHWEST AIRLINES OPTION Put 50,700 9,900.00 3,318 1,723.08 n/a n/a n/a
2018-02-01 2017-12-31 13F SOUTHWEST AIRLINES OPTION Put 50,700 3,318 n/a n/a n/a
2017-11-03 2017-09-30 13F SOUTHWEST AIRLS OPTION Put 507 0.00 183 18.18 n/a n/a n/a
2017-08-03 2017-06-30 13F SOUTHWEST AIRLS OPTION Put 507 1,167.50 154 185.19 n/a n/a n/a
2017-05-03 2017-03-31 13F SOUTHWEST AIRLS OPTION Put 40 -90.52 54 5,300.00 n/a n/a n/a
2017-02-14 2016-12-31 13F SOUTHWEST AIRLS OPTION Put 422 1 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.