Alaska Air Group, Inc.
US ˙ NYSE ˙ US0116591092

SecurityALK / Alaska Air Group, Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership15,088 shares
Latest Disclosed Value $ 555,012
Janus Henderson Group Plc ownership in ALK / Alaska Air Group, Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 15,088 shares of Alaska Air Group, Inc. (US:ALK) valued at $554,937 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 15,088 shares of Alaska Air Group, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $631,735 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/A-1 ALASKA AIR GROUP COM 011659109 15,088 0 0.00 555 -26.88 0.0001
2026-05-15 2026-03-31 13F ALASKA AIR GROUP COM 011659109 15,088 0 0.00 555 -26.88 0.0001
2026-02-17 2025-12-31 13F ALASKA AIR GROUP COM 011659109 15,088 0 0.00 759 1.07 0.0003
2025-11-14 2025-09-30 13F ALASKA AIR GROUP COM 011659109 15,088 0 0.00 751 0.67 0.0003
2025-08-14 2025-06-30 13F ALASKA AIR GROUP COM 011659109 15,088 0 0.00 746 -1.71 0.0004
2025-05-15 2025-03-31 13F ALASKA AIR GROUP COM 011659109 15,088 0 0.00 759 -22.31 0.0004
2025-02-14 2024-12-31 13F ALASKA AIR GROUP COM 011659109 15,088 0 0.00 977 43.47 0.0005
2024-11-14 2024-09-30 13F ALASKA AIR GROUP COM 011659109 15,088 0 0.00 682 11.82 0.0003
2024-08-14 2024-06-30 13F ALASKA AIR GROUP COM 011659109 15,088 -661 -4.20 609 -9.91 0.0003
2024-05-15 2024-03-31 13F ALASKA AIR GROUP COM 011659109 15,749 1 0.01 677 9.92 0.0004
2024-02-14 2023-12-31 13F ALASKA AIR GROUP COM 011659109 15,748 -3,837 -19.59 615 -15.29 0.0004
2023-11-14 2023-09-30 13F ALASKA AIR GROUP COM 011659109 19,585 0 0.00 726 -30.33 0.0005
2023-08-14 2023-06-30 13F ALASKA AIR GROUP COM 011659109 19,585 -63 -0.32 1,042 26.46 0.0006
2023-05-15 2023-03-31 13F ALASKA AIR GROUP COM 011659109 19,648 14,710 297.89 824 288.68 0.0005
2023-02-14 2022-12-31 13F ALASKA AIR GROUP COM 011659109 4,938 4,938 212 0.0002
2023-01-13 2022-09-30 13F/A-1 ALASKA AIR GROUP COM 011659109 0 -6,860 -100.00 0 -100.00
2022-11-14 2022-09-30 13F ALASKA AIR GROUP COM 011659109 0 -6,860 0
2022-08-15 2022-06-30 13F ALASKA AIR GROUP COM 011659109 6,860 -44 -0.64 275 -31.25 0.0002
2022-05-16 2022-03-31 13F ALASKA AIR GROUP COM 011659109 6,904 5 0.07 400 11.42 0.0002
2022-02-14 2021-12-31 13F ALASKA AIR GROUP COM 011659109 6,899 6,899 359 0.0001
2020-05-14 2020-03-31 13F ALASKA AIR GROUP COM 011659109 0 -11,520 -100.00 0 -100.00
2020-02-18 2019-12-31 13F ALASKA AIR GROUP COM 011659109 11,520 -15,444 -57.28 780 -55.43 0.0004
2019-11-14 2019-09-30 13F ALASKA AIR GROUP COM 011659109 26,964 -2,974 -9.93 1,750 -8.52 0.0009
2019-07-31 2019-06-30 13F ALASKA AIR GROUP COM 011659109 29,938 18,781 168.33 1,913 205.59 0.0010
2019-04-30 2019-03-31 13F ALASKA AIR GROUP COM 011659109 11,157 1,896 20.47 626 10.99 0.0003
2019-02-06 2018-12-31 13F ALASKA AIR GROUP COM 011659109 9,261 467 5.31 564 -6.93 0.0004
2018-11-09 2018-09-30 13F ALASKA AIR GROUP COM 011659109 8,794 1,959 28.66 606 46.73 0.0003
2018-08-10 2018-06-30 13F ALASKA AIR GROUP COM 011659109 6,835 6,835 413 0.0002
2018-05-14 2018-03-31 13F ALASKA AIR GROUP COM 011659109 0 -117,659 -100.00 0 -100.00
2018-03-12 2017-12-31 13F/A-1 ALASKA AIR GROUP COM 011659109 117,659 -580,489 -83.15 8,649 -83.76 0.0053
2018-02-09 2017-12-31 13F ALASKA AIR GROUP COM 011659109 117,659 -580,489 8,649
2017-11-14 2017-09-30 13F ALASKA AIR GROUP COM 011659109 698,148 53,191 8.25 53,248 -8.02 0.0341
2017-08-17 2017-06-30 13F/A-1 ALASKA AIR GROUP COM 011659109 644,957 644,957 57,891 0.0395
2017-08-14 2017-06-30 13F ALASKA AIR GROUP COM 011659109 644,957 57,891
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.