International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionWright Investors Service Inc
Latest Disclosed Ownership5,478 shares
Latest Disclosed Value $ 1,327,812
Wright Investors Service Inc reports 34.99% decrease in ownership of IBM / International Business Machines Corporation

On April 29, 2026 - Wright Investors Service Inc filed a 13F-HR form disclosing ownership of 5,478 shares of International Business Machines Corporation (MX:IBM) valued at $1,327,812 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 8,427 shares of International Business Machines Corporation. This represents a change in shares of -34.99% 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)
2026-04-29 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 5,478 -2,949 -34.99 1,328 -46.83 0.3021
2026-01-26 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 8,427 -126 -1.47 2,496 3.44 0.7494
2025-10-28 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 8,553 -508 -5.61 2,413 -9.66 0.6987
2025-07-11 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 9,061 149 1.67 2,671 20.53 0.8062
2025-04-09 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 8,912 -420 -4.50 2,216 8.04 0.7325
2025-01-13 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 9,332 -9,009 -49.12 2,051 -49.41 0.6662
2024-10-04 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 18,341 -339 -1.81 4,055 25.51 1.0612
2024-07-26 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 18,680 -5,787 -23.65 3,231 -30.86 0.8509
2024-05-02 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 24,467 153 0.63 4,672 17.51 1.1843
2024-01-31 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 24,314 -3,895 -13.81 3,977 0.48 1.1201
2023-10-31 2023-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 28,209 508 1.83 3,958 6.77 1.1478
2023-07-27 2023-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 27,701 -2,733 -8.98 3,707 -7.09 1.0449
2023-04-26 2023-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 30,434 -501 -1.62 3,990 -8.47 1.1340
2023-01-27 2022-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 30,935 752 2.49 4,358 21.53 1.2494
2022-11-01 2022-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 30,183 -2,382 -7.31 3,586 -22.01 1.1271
2022-08-02 2022-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 32,565 1,617 5.22 4,598 14.26 1.3136
2022-04-22 2022-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 30,948 891 2.96 4,024 0.17 1.0001
2022-01-27 2021-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 30,057 1,989 7.09 4,017 3.00 1.0160
2021-11-01 2021-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 28,068 1,780 6.77 3,900 1.19 1.1084
2021-08-03 2021-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 26,288 969 3.83 3,854 14.23 1.0456
2021-04-29 2021-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 25,319 11,713 86.09 3,374 96.96 1.0218
2021-02-02 2020-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 13,606 102 0.76 1,713 4.26 0.5881
2020-11-06 2020-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 13,504 1,168 9.47 1,643 10.27 0.5846
2020-07-23 2020-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 12,336 -14,614 -54.23 1,490 -50.17 0.5718
2020-04-30 2020-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 26,950 7,231 36.67 2,990 13.13 1.2881
2020-01-28 2019-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,719 8,871 81.78 2,643 67.49 0.9049
2019-11-01 2019-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 10,848 1,871 20.84 1,578 27.46 0.5667
2019-08-01 2019-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 8,977 573 6.82 1,238 4.38 0.4717
2019-04-24 2019-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 8,404 3,842 84.22 1,186 128.52 0.4792
2019-02-01 2018-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 4,562 -302 -6.21 519 -29.39 0.2223
2018-10-25 2018-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 4,864 235 5.08 735 13.60 0.2689
2018-08-02 2018-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 4,629 6 0.13 647 -8.74 0.2571
2018-04-25 2018-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 4,623 311 7.21 709 7.10 0.2438
2018-01-30 2017-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 4,312 -3,316 -43.47 662 -40.20 0.2216
2017-10-30 2017-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 7,628 -7,407 -49.27 1,107 -52.14 0.4028
2017-07-21 2017-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 15,035 -14,370 -48.87 2,313 -54.83 0.8740
2017-04-28 2017-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 29,405 6,590 28.88 5,121 35.23 2.0735
2017-01-27 2016-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 22,815 3,800 19.98 3,787 25.36 1.6407
2016-10-20 2016-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,015 7,770 69.10 3,021 76.98 1.2605
2016-08-01 2016-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 11,245 1,125 11.12 1,707 11.35 0.7021
2016-04-25 2016-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 10,120 2,515 33.07 1,533 46.42 0.6070
2016-01-27 2015-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 7,605 2,920 62.33 1,047 54.20 0.3865
2015-10-27 2015-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 4,685 2,215 89.68 679 68.91 0.3070
2015-07-28 2015-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,470 915 58.84 402 60.80 0.1917
2015-04-24 2015-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,555 -291 -15.76 250 -29.58 0.1202
2014-04-24 2014-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,846 -175 -8.66 355 -6.33 0.1595
2014-01-28 2013-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,021 -865 -29.97 379 -29.03 0.1671
2013-10-17 2013-09-30 13F I B M COM 459200101 2,886 -1,543 -34.84 534 -36.88 0.2419
2013-07-30 2013-06-30 13F I B M COM 459200101 4,429 4,429 846 0.4000
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.