Southwest Airlines Co.
US ˙ NYSE ˙ US8447411088

SecurityLUV / Southwest Airlines Co.
InstitutionEdgestream Partners, L.P.
Latest Disclosed Ownership168,858 shares
Latest Disclosed Value $ 6,343,995
Edgestream Partners, L.P. reports 9.56% increase in ownership of LUV / Southwest Airlines Co.

On May 18, 2026 - Edgestream Partners, L.P. filed a 13F-HR form disclosing ownership of 168,858 shares of Southwest Airlines Co. (US:LUV) valued at $6,343,995 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 154,117 shares of Southwest Airlines Co.. This represents a change in shares of 9.56% during the quarter. The current value of the position is $6,901,226 USD.

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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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)
2026-05-18 2026-03-31 13F SOUTHWEST AIRLS COM 844741108 168,858 14,741 9.56 6,344 -0.41 0.2082
2026-02-13 2025-12-31 13F SOUTHWEST AIRLS COM 844741108 154,117 154,117 6,370 0.1792
2025-11-12 2025-09-30 13F SOUTHWEST AIRLS COM 844741108 0 -69,810 -100.00 0 -100.00
2025-08-13 2025-06-30 13F SOUTHWEST AIRLS COM 844741108 69,810 69,810 2,265 0.0630
2025-05-02 2025-03-31 13F SOUTHWEST AIRLS COM 844741108 0 -63,763 -100.00 0 -100.00
2025-02-07 2024-12-31 13F SOUTHWEST AIRLS COM 844741108 63,763 11,835 22.79 2,144 39.34 0.0913
2024-11-14 2024-09-30 13F SOUTHWEST AIRLS COM 844741108 51,928 -23,411 -31.07 1,539 -28.63 0.0677
2024-08-09 2024-06-30 13F SOUTHWEST AIRLS COM 844741108 75,339 41,224 120.84 2,155 116.58 0.1038
2024-05-10 2024-03-31 13F SOUTHWEST AIRLS COM 844741108 34,115 -115,363 -77.18 996 -76.95 0.0496
2024-02-14 2023-12-31 13F SOUTHWEST AIRLS COM 844741108 149,478 149,478 4,317 0.3107
2023-11-15 2023-09-30 13F SOUTHWEST AIRLS COM 844741108 0 -100,769 -100.00 0 -100.00
2023-08-10 2023-06-30 13F SOUTHWEST AIRLS COM 844741108 100,769 100,769 3,649 0.3302
2021-08-10 2021-06-30 13F SOUTHWEST AIRLS COM 844741108 0 -59,002 -100.00 0 -100.00
2021-05-06 2021-03-31 13F SOUTHWEST AIRLS COM 844741108 59,002 -165,296 -73.69 3,603 -65.54 0.2012
2021-02-11 2020-12-31 13F SOUTHWEST AIRLS COM 844741108 224,298 40,854 22.27 10,455 51.98 0.5253
2020-11-10 2020-09-30 13F SOUTHWEST AIRLS COM 844741108 183,444 -145,963 -44.31 6,879 -38.90 0.4444
2020-08-11 2020-06-30 13F SOUTHWEST AIRLS COM 844741108 329,407 253,518 334.06 11,259 316.69 0.5919
2020-05-14 2020-03-31 13F SOUTHWEST AIRLS COM 844741108 75,889 9,788 14.81 2,702 -24.27 0.2498
2020-02-13 2019-12-31 13F SOUTHWEST AIRLS COM 844741108 66,101 66,101 3,568 0.1853
2018-11-07 2018-09-30 13F SOUTHWEST AIRLS COM 844741108 0 -90,076 -100.00 0 -100.00
2018-08-09 2018-06-30 13F SOUTHWEST AIRLS COM 844741108 90,076 -47,077 -34.32 4,583 -41.66 0.9338
2018-05-15 2018-03-31 13F SOUTHWEST AIRLS COM 844741108 137,153 132,784 3,039.23 7,856 2,646.85 1.5417
2018-02-09 2017-12-31 13F SOUTHWEST AIRLS COM 844741108 4,369 -25,000 -85.12 286 -82.60 0.3421
2017-10-30 2017-09-30 13F SOUTHWEST AIRLS COM 844741108 29,369 3,325 12.77 1,644 1.61 0.8758
2017-08-10 2017-06-30 13F SOUTHWEST AIRLS COM 844741108 26,044 -10,899 -29.50 1,618 -18.53 0.6101
2017-05-15 2017-03-31 13F SOUTHWEST AIRLS COM 844741108 36,943 25,900 234.54 1,986 261.09 0.8750
2017-02-14 2016-12-31 13F SOUTHWEST AIRLS COM 844741108 11,043 -183 -1.63 550 25.86 1.1415
2016-11-14 2016-09-30 13F SOUTHWEST AIRLS COM 844741108 11,226 -5,540 -33.04 437 -33.49 0.2406
2016-08-12 2016-06-30 13F SOUTHWEST AIRLS COM 844741108 16,766 -17,495 -51.06 657 -57.20 0.8811
2016-05-16 2016-03-31 13F SOUTHWEST AIRLS COM 844741108 34,261 34,261 0.00 1,535 1.7274
2016-02-16 2015-12-31 13F SOUTHWEST AIRLS COM 844741108 0 -15,569 -100.00 0 -100.00
2015-11-12 2015-09-30 13F SOUTHWEST AIRLS COM 844741108 15,569 15,569 0.00 592 1.0350
2015-08-14 2015-06-30 13F SOUTHWEST AIRLS COM 844741108 0 -39,927 -100.00 0 -100.00
2015-05-14 2015-03-31 13F SOUTHWEST AIRLS COM 844741108 39,927 22,206 125.31 1,769 135.87 2.3023
2015-02-17 2014-12-31 13F SOUTHWEST AIRLS COM 844741108 17,721 -15,036 -45.90 750 -32.19 1.7128
2014-11-14 2014-09-30 13F SOUTHWEST AIRLS COM 844741108 32,757 -47,244 -59.05 1,106 -48.53 0.9649
2014-08-14 2014-06-30 13F SOUTHWEST AIRLS COM 844741108 80,001 80,001 2,149 1.3698
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.