International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership302,610 shares
Latest Disclosed Value $ 73,353,744
Janus Henderson Group Plc reports 3.09% decrease in ownership of IBM / International Business Machines Corporation

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 302,610 shares of International Business Machines Corporation (MX:IBM) valued at $73,353,744 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 312,244 shares of International Business Machines Corporation. This represents a change in shares of -3.09% during the quarter.

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 INTERNATIONAL BUSINESS MACHS COM 459200101 302,610 -9,634 -3.09 73,354 -20.69 0.0350
2026-05-15 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 302,610 -9,634 73,354 0.0136
2026-02-17 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 312,244 1,891 0.61 92,486 5.61 0.0414
2025-11-14 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 310,353 -46 -0.01 87,575 -4.27 0.0400
2025-08-14 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 310,399 180,012 138.06 91,479 187.68 0.0448
2025-05-15 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 130,387 -599,092 -82.13 31,800 -80.17 0.0174
2025-02-14 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 729,479 -141,585 -16.25 160,393 -16.70 0.0815
2024-11-14 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 871,064 183,141 26.62 192,557 61.82 0.0986
2024-08-14 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 687,923 -29,279 -4.08 118,997 -13.11 0.0637
2024-05-15 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 717,202 104,771 17.11 136,946 36.72 0.0747
2024-02-14 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 612,431 478,361 356.80 100,168 432.50 0.0597
2023-11-14 2023-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 134,070 37,698 39.12 18,812 45.90 0.0123
2023-08-14 2023-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 96,372 1,964 2.08 12,893 4.20 0.0080
2023-05-15 2023-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 94,408 -8,043 -7.85 12,374 -14.27 0.0082
2023-02-14 2022-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 102,451 5,076 5.21 14,434 24.70 0.0103
2023-01-13 2022-09-30 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 97,375 -70,038 -41.84 11,574 -51.09 0.0087
2022-11-14 2022-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 97,375 -70,038 11,574 0.0087
2022-08-15 2022-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 167,413 -971,359 -85.30 23,664 -84.02 0.0163
2022-05-16 2022-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,138,772 207,996 22.35 148,066 19.02 0.0715
2022-02-14 2021-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 930,776 -2,081,042 -69.10 124,406 -70.27 0.0519
2021-11-16 2021-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 3,011,818 -100,378 -3.23 418,426 -8.28 0.1830
2021-08-16 2021-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 3,112,196 108,076 3.60 456,218 13.96 0.1953
2021-05-17 2021-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 3,004,120 90,976 3.12 400,330 9.17 0.1828
2021-02-16 2020-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,913,144 240,377 8.99 366,703 12.77 0.1704
2020-11-16 2020-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,672,767 388,758 17.02 325,192 17.89 0.1695
2020-08-14 2020-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,284,009 -519,331 -18.53 275,835 -11.30 0.1548
2020-05-14 2020-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,803,340 148,029 5.57 310,969 -12.63 0.2140
2020-02-18 2019-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,655,311 1,516,798 133.23 355,913 114.97 0.1822
2019-11-14 2019-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,138,513 233,998 25.87 165,563 32.73 0.0897
2019-07-31 2019-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 904,515 1,379 0.15 124,737 -2.11 0.0679
2019-04-30 2019-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 903,136 94,109 11.63 127,429 38.57 0.0706
2019-02-06 2018-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 809,027 9,311 1.16 91,957 -23.95 0.0586
2018-11-09 2018-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 799,716 546,063 215.28 120,923 241.22 0.0646
2018-08-10 2018-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 253,653 -42,261 -14.28 35,438 -21.95 0.0202
2018-05-14 2018-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 295,914 -26,621 -8.25 45,405 -8.27 0.0268
2018-03-12 2017-12-31 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 322,535 -494,426 -60.52 49,499 -58.23 0.0305
2018-02-09 2017-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 322,535 -494,426 49,499
2017-11-14 2017-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 816,961 -541,142 -39.85 118,512 -43.27 0.0760
2017-08-17 2017-06-30 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 1,358,103 1,249,916 1,155.33 208,923 1,008.70 0.1424
2017-08-14 2017-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,358,103 1,249,916 208,923
2017-05-03 2017-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 108,187 -778 -0.71 18,844 4.17 0.1323
2017-01-30 2016-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 108,965 -572 -0.52 18,089 3.97 0.1334
2016-10-24 2016-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 109,537 -3,779 -3.33 17,398 1.12 0.1282
2016-07-29 2016-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 113,316 -10,690 -8.62 17,205 -8.40 0.1431
2016-05-12 2016-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 124,006 5,750 4.86 18,783 15.46 0.1524
2016-02-03 2015-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 118,256 -109,592 -48.10 16,268 -50.72 0.1305
2015-11-16 2015-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 227,848 -251,748 -52.49 33,012 -57.69 0.2908
2015-08-17 2015-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 479,596 -18,465 -3.71 78,016 -2.41 0.6131
2015-06-02 2015-03-31 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 498,061 -134,921 -21.32 79,946 -21.28 0.6167
2015-05-15 2015-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 498,061 79,946
2015-02-12 2014-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 632,982 -35,818 -5.36 101,562 -20.03 0.7323
2014-11-12 2014-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 668,800 -5,866 -0.87 127,005 3.87 1.1946
2014-08-13 2014-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 674,666 -19,473 -2.81 122,270 -8.60 1.1417
2014-05-08 2014-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 694,139 2,548 0.37 133,771 3.17 1.3023
2014-01-14 2013-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 691,591 -44,233 -6.01 129,659 -4.89 1.3100
2013-11-12 2013-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 735,824 -109,110 -12.91 136,330 -15.61 1.5039
2013-08-15 2013-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 844,934 844,934 161,547 1.8885
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.