International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionHemenway Trust Co LLC
Latest Disclosed Ownership3,215 shares
Latest Disclosed Value $ 779,284
Hemenway Trust Co LLC reports 5.86% decrease in ownership of IBM / International Business Machines Corporation

On May 7, 2026 - Hemenway Trust Co LLC filed a 13F-HR form disclosing ownership of 3,215 shares of International Business Machines Corporation (MX:IBM) valued at $779,284 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 3,415 shares of International Business Machines Corporation. This represents a change in shares of -5.86% 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)
2026-05-07 2026-03-31 13F INTL BUSINESS MACH COM 459200101 3,215 -200 -5.86 779 -22.95 0.0627
2026-02-03 2025-12-31 13F INTL BUSINESS MACH COM 459200101 3,415 -30 -0.87 1,012 4.01 0.0774
2025-11-07 2025-09-30 13F INTL BUSINESS MACH COM 459200101 3,445 -145 -4.04 972 -8.13 0.0744
2025-07-23 2025-06-30 13F INTL BUSINESS MACH COM 459200101 3,590 -40 -1.10 1,058 17.29 0.0819
2025-04-18 2025-03-31 13F INTL BUSINESS MACH COM 459200101 3,630 314 9.47 903 23.90 0.0735
2025-02-13 2024-12-31 13F INTL BUSINESS MACH COM 459200101 3,316 -21 -0.63 729 -1.22 0.0591
2024-11-05 2024-09-30 13F INTL BUSINESS MACH COM 459200101 3,337 -205 -5.79 738 20.42 0.0583
2024-08-05 2024-06-30 13F INTL BUSINESS MACH COM 459200101 3,542 -4 -0.11 613 -9.60 0.0524
2024-05-06 2024-03-31 13F INTL BUSINESS MACH COM 459200101 3,546 415 13.25 677 32.23 0.0586
2024-02-13 2023-12-31 13F INTL BUSINESS MACH COM 459200101 3,131 -749 -19.30 512 -5.88 0.0490
2023-11-14 2023-09-30 13F INTL BUSINESS MACH COM 459200101 3,880 -16 -0.41 544 4.41 0.0571
2023-08-11 2023-06-30 13F INTL BUSINESS MACH COM 459200101 3,896 195 5.27 521 7.42 0.0511
2023-05-10 2023-03-31 13F INTL BUSINESS MACH COM 459200101 3,701 351 10.48 485 2.97 0.0514
2023-02-08 2022-12-31 13F INTL BUSINESS MACH COM 459200101 3,350 76 2.32 472 21.08 0.0525
2022-11-08 2022-09-30 13F INTL BUSINESS MACH COM 459200101 3,274 150 4.80 389 -11.79 0.0457
2022-07-19 2022-06-30 13F INTL BUSINESS MACH COM 459200101 3,124 0 0.00 441 8.62 0.0502
2022-05-16 2022-03-31 13F INTL BUSINESS MACH COM 459200101 3,124 -600 -16.11 406 -18.47 0.0390
2022-02-08 2021-12-31 13F INTL BUSINESS MACH COM 459200101 3,724 100 2.76 498 -0.99 0.0453
2021-11-10 2021-09-30 13F INTL BUSINESS MACH COM 459200101 3,624 0 0.00 503 -5.27 0.0508
2021-08-09 2021-06-30 13F INTL BUSINESS MACH COM 459200101 3,624 0 0.00 531 9.94 0.0535
2021-05-17 2021-03-31 13F INTL BUSINESS MACH COM 459200101 3,624 -490 -11.91 483 -6.76 0.0528
2021-02-16 2020-12-31 13F INTL BUSINESS MACH COM 459200101 4,114 915 28.60 518 33.16 0.0593
2020-10-28 2020-09-30 13F INTL BUSINESS MACH COM 459200101 3,199 -25 -0.78 389 0.00 0.0506
2020-07-28 2020-06-30 13F INTL BUSINESS MACH COM 459200101 3,224 -330 -9.29 389 -1.27 0.0541
2020-05-07 2020-03-31 13F INTL BUSINESS MACH COM 459200101 3,554 -25 -0.70 394 -17.92 0.0666
2020-01-15 2019-12-31 13F INTL BUSINESS MACH COM 459200101 3,579 -20 -0.56 480 -8.22 0.0690
2019-11-04 2019-09-30 13F INTL BUSINESS MACH COM 459200101 3,599 1,336 59.04 523 67.63 0.0819
2019-07-24 2019-06-30 13F INTL BUSINESS MACH COM 459200101 2,263 -535 -19.12 312 -21.01 0.0482
2019-04-29 2019-03-31 13F/A-1 INTL BUSINESS MACH COM 459200101 2,798 306 12.28 395 39.58 0.0637
2019-04-29 2019-03-31 13F INTL BUSINESS MACH COM 459200101 2,798 395
2019-01-24 2018-12-31 13F INTL BUSINESS MACH COM 459200101 2,492 -100 -3.86 283 -27.81 0.0578
2018-10-15 2018-09-30 13F INTL BUSINESS MACH COM 459200101 2,592 -350 -11.90 392 -4.62 0.0660
2018-07-30 2018-06-30 13F INTL BUSINESS MACH COM 459200101 2,942 -341 -10.39 411 -18.45 0.0759
2018-04-24 2018-03-31 13F INTL BUSINESS MACH COM 459200101 3,283 650 24.69 504 24.75 0.0959
2018-02-02 2017-12-31 13F INTL BUSINESS MACH COM 459200101 2,633 736 38.80 404 46.91 0.0770
2017-10-26 2017-09-30 13F INTL BUSINESS MACH COM 459200101 1,897 0 0.00 275 -5.82 0.0574
2017-07-21 2017-06-30 13F INTL BUSINESS MACH COM 459200101 1,897 300 18.79 292 5.04 0.0649
2017-05-15 2017-03-31 13F INTL BUSINESS MACH COM 459200101 1,597 937 141.97 278 152.73 0.0640
2017-02-10 2016-12-31 13F INTL BUSINESS MACH Common Stock 459200101 660 660 0.00 110 0.0277
2016-05-27 2016-03-31 13F INTL BUSINESS MACH Common Stock 459200101 0 -735 -100.00 0 -100.00
2016-02-08 2015-12-31 13F INTL BUSINESS MACH Common Stock 459200101 735 -350 -32.26 101 -35.67 0.0267
2015-11-13 2015-09-30 13F INTL BUSINESS MACH Common Stock 459200101 1,085 -100 -8.44 157 -18.65 0.0434
2015-07-31 2015-06-30 13F INTL BUSINESS MACH Common Stock 459200101 1,185 -103 -8.00 193 -6.76 0.0495
2015-05-22 2015-03-31 13F INTL BUSINESS MACH Common Stock 459200101 1,288 613 90.81 207 91.67 0.0542
2015-02-13 2014-12-31 13F INTL BUSINESS MACH Common Stock 459200101 675 -745 -52.46 108 -60.00 0.0323
2014-11-24 2014-09-30 13F INTL BUSINESS MACH Common Stock 459200101 1,420 0 0.00 270 5.06 0.0844
2014-07-23 2014-06-30 13F INTL BUSINESS MACH Common Stock 459200101 1,420 0 0.00 257 -5.86 0.0780
2014-05-23 2014-03-31 13F INTL BUSINESS MACH Common Stock 459200101 1,420 50 3.65 273 6.23 0.0860
2014-02-27 2013-12-31 13F INTL BUSINESS MACH Common Stock 459200101 1,370 314 29.73 257 31.12 0.0824
2013-11-18 2013-09-30 13F INTL BUSINESS MACH Common Stock 459200101 1,056 396 60.00 196 55.56 0.0731
2013-08-19 2013-06-30 13F INTL BUSINESS MACH Common Stock 459200101 660 0 0.00 126 -10.64 0.0537
2013-05-24 2013-03-31 13F INTL BUSINESS MACH Common Stock 459200101 660 660 141 0.0597
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.