International Business Machines Corporation
BG ˙ BUL ˙ US4592001014
SecurityBG:IBM / International Business Machines Corporation
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership538,958 shares
Latest Disclosed Value $ 130,638,030
Asset Management One Co., Ltd. reports 1.15% decrease in ownership of IBM / International Business Machines Corporation

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 538,958 shares of International Business Machines Corporation (BG:IBM) valued at $130,638,030 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 545,224 shares of International Business Machines Corporation. This represents a change in shares of -1.15% 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)
2026-05-08 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 538,958 -6,266 -1.15 130,638 -21.61 0.3852
2026-01-27 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 545,224 24,044 4.61 166,641 13.32 0.4633
2025-10-22 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 521,180 -7,060 -1.34 147,056 -5.56 0.4261
2025-07-31 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 528,240 2,914 0.55 155,715 19.21 0.4882
2025-04-23 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 525,326 22,840 4.55 130,628 16.69 0.4518
2025-01-30 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 502,486 -11,524 -2.24 111,944 -1.49 0.3846
2024-10-30 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 514,010 4,188 0.82 113,637 28.88 0.4044
2024-07-18 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 509,822 -1,605 -0.31 88,174 -9.72 0.3373
2024-05-02 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 511,427 -5,131 -0.99 97,662 15.46 0.3764
2024-01-24 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 516,558 -12,848 -2.43 84,586 13.88 0.3405
2023-10-19 2023-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 529,406 11,016 2.13 74,276 7.08 0.3307
2023-07-31 2023-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 518,390 5,252 1.02 69,366 3.12 0.2936
2023-04-25 2023-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 513,138 5,858 1.15 67,267 -5.99 0.3049
2023-02-06 2022-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 507,280 -4,174 -0.82 71,553 17.75 0.3487
2022-11-04 2022-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 511,454 -2,482 -0.48 60,765 -16.26 0.3092
2022-07-29 2022-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 513,936 23,565 4.81 72,562 13.81 0.3407
2022-05-13 2022-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 490,371 -29,909 -5.75 63,758 -8.11 0.2489
2022-02-09 2021-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 520,280 13,079 2.58 69,386 -1.53 0.2417
2021-11-02 2021-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 507,201 -9,715 -1.88 70,465 -7.01 0.2701
2021-08-03 2021-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 516,916 15,944 3.18 75,774 13.50 0.2820
2021-05-14 2021-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 500,972 -11,972 -2.33 66,759 5.08 0.2651
2021-02-12 2020-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 512,944 -7,232 -1.39 63,531 0.38 0.2617
2020-11-13 2020-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 520,176 -26,789 -4.90 63,291 -4.18 0.2909
2020-08-14 2020-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 546,965 -171 -0.03 66,055 8.83 0.3249
2020-05-14 2020-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 547,136 13,827 2.59 60,694 -15.10 0.3544
2020-02-14 2019-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 533,309 -586 -0.11 71,485 -7.93 0.3222
2019-11-14 2019-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 533,895 4,325 0.82 77,643 6.32 0.3740
2019-08-14 2019-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 529,570 26,458 5.26 73,027 2.87 0.3587
2019-05-15 2019-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 503,112 -990,198 -66.31 70,988 -58.18 0.3839
2019-02-13 2018-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,493,310 5,109 0.34 169,755 -24.57 0.4046
2018-11-14 2018-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,488,201 14,598 0.99 225,054 9.31 0.4619
2018-08-14 2018-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,473,603 84,634 6.09 205,889 -3.39 0.4500
2018-05-14 2018-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,388,969 665 0.05 213,110 0.03 0.4799
2018-02-14 2017-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,388,304 -36,016 -2.53 213,036 3.07 0.4700
2017-11-14 2017-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,424,320 -7,915 -0.55 206,682 -6.20 0.4852
2017-08-14 2017-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,432,235 5,170 0.36 220,342 -11.33 0.5624
2017-05-11 2017-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,427,065 -124,360 -8.02 248,490 -3.53 0.6524
2017-05-02 2016-12-31 13F/A-1 INTL BUSINESS MACHINES COM 459200101 1,551,425 1,460,424 1,604.84 257,591 1,688.83 0.6584
2017-02-13 2016-12-31 13F INTL BUSINESS MACHINES COM 459200101 1,573,373 261,234
2016-11-07 2016-09-30 13F INTL BUSINESS MACHINES Com 459200101 91,001 -67 -0.07 14,400 6.03 0.2139
2016-08-03 2016-06-30 13F INTL BUSINESS MACHINES Com 459200101 91,068 -1,353 -1.46 13,581 -1.37 0.2038
2016-05-05 2016-03-31 13F INTL BUSINESS MACHINES Com 459200101 92,421 3,392 3.81 13,770 11.00 0.2010
2016-01-28 2015-12-31 13F INTL BUSINESS MACHINES Com 459200101 89,029 -46,068 -34.10 12,405 -36.06 0.1852
2015-11-12 2015-09-30 13F INTL BUSINESS MACHINES Com 459200101 135,097 39,614 41.49 19,401 24.74 0.2953
2015-08-06 2015-06-30 13F INTL BUSINESS MACHINES Com 459200101 95,483 -2,677 -2.73 15,553 -2.31 0.2155
2015-05-11 2015-03-31 13F INTL BUSINESS MACHINES Com 459200101 98,160 -18,564 -15.90 15,920 -15.01 0.1966
2015-02-09 2014-12-31 13F INTL BUSINESS MACHINES Com 459200101 116,724 -13,388 -10.29 18,731 -24.11 0.2431
2014-11-05 2014-09-30 13F INTL BUSINESS MACHINES Com 459200101 130,112 -5,291 -3.91 24,682 0.39 0.3408
2014-08-12 2014-06-30 13F INTL BUSINESS MACHINES Com 459200101 135,403 122 0.09 24,587 -4.78 0.3670
2014-05-05 2014-03-31 13F INTL BUSINESS MACHINES Com 459200101 135,281 -27,950 -17.12 25,822 -14.91 0.4069
2014-02-05 2013-12-31 13F/A-1 INTL BUSINESS MACHINES COM 459200101 163,231 -33,411 -16.99 30,346 -17.17 0.4703
2014-01-29 2013-12-31 13F INTL BUSINESS MACHINES COM 459200101 163,231 30,346
2014-02-05 2013-09-30 13F/A-1 INTL BUSINESS MACHINES COM 459200101 196,642 35,729 22.20 36,637 16.80 0.5513
2013-11-06 2013-09-30 13F INTL BUSINESS MACHINES Com 459200101 196,642 36,637
2014-02-12 2013-06-30 13F/A-1 INTL BUSINESS MACHINES COM 459200101 160,913 160,913 31,366 0.5093
2013-08-05 2013-06-30 13F INTL BUSINESS MACHINES Com 459200101 160,913 31,366
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.