International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionDearborn Partners Llc
Latest Disclosed Ownership45,567 shares
Latest Disclosed Value $ 11,044,960
Dearborn Partners Llc reports 6.49% decrease in ownership of IBM / International Business Machines Corporation

On May 12, 2026 - Dearborn Partners Llc filed a 13F-HR form disclosing ownership of 45,567 shares of International Business Machines Corporation (MX:IBM) valued at $11,044,960 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 48,727 shares of International Business Machines Corporation. This represents a change in shares of -6.49% 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)
2026-05-12 2026-03-31 13F International Business Machine COM 459200101 45,567 -3,160 -6.49 11,045 -23.48 0.5777
2026-02-11 2025-12-31 13F International Business Machine COM 459200101 48,727 -3,138 -6.05 14,433 -1.37 0.7208
2025-11-10 2025-09-30 13F International Business Machine COM 459200101 51,865 347 0.67 14,634 -3.63 0.6862
2025-08-14 2025-06-30 13F International Business Machine COM 459200101 51,518 912 1.80 15,186 20.69 0.7189
2025-05-08 2025-03-31 13F International Business Machine COM 459200101 50,606 -6,071 -10.71 12,584 1.00 0.6041
2025-02-07 2024-12-31 13F International Business Machine COM 459200101 56,677 736 1.32 12,459 0.74 0.5221
2024-11-06 2024-09-30 13F International Business Machine COM 459200101 55,941 -361 -0.64 12,368 27.01 0.5020
2024-07-26 2024-06-30 13F International Business Machine COM 459200101 56,302 -294 -0.52 9,737 -9.90 0.4210
2024-05-08 2024-03-31 13F International Business Machine COM 459200101 56,596 -16,508 -22.58 10,808 -9.61 0.4640
2024-01-26 2023-12-31 13F International Business Machine COM 459200101 73,104 177 0.24 11,956 16.86 0.4355
2023-11-01 2023-09-30 13F International Business Machine COM 459200101 72,927 218 0.30 10,232 5.16 0.4015
2023-08-03 2023-06-30 13F International Business Machine COM 459200101 72,709 274 0.38 9,729 2.46 0.3723
2023-05-04 2023-03-31 13F International Business Machine COM 459200101 72,435 106 0.15 9,495 -6.82 0.3735
2023-02-02 2022-12-31 13F International Business Machine COM 459200101 72,329 33 0.05 10,190 18.64 0.4113
2022-11-21 2022-09-30 13F/A-1 International Business Machine COM 459200101 72,296 316 0.44 8,589 -15.49 0.3789
2022-10-25 2022-09-30 13F International Business Machine COM 459200101 72,296 316 8,589 0.3541
2022-07-20 2022-06-30 13F International Business Machine COM 459200101 71,980 -924 -1.27 10,163 7.22 0.4293
2022-05-04 2022-03-31 13F International Business Machine COM 459200101 72,904 2,871 4.10 9,479 1.26 0.3595
2022-01-28 2021-12-31 13F International Business Machine COM 459200101 70,033 -14,300 -16.96 9,361 -20.10 0.3394
2021-10-27 2021-09-30 13F International Business Machine COM 459200101 84,333 -59 -0.07 11,716 -5.29 0.4759
2021-07-26 2021-06-30 13F International Business Machine COM 459200101 84,392 508 0.61 12,371 10.67 0.4974
2021-04-29 2021-03-31 13F International Business Machine COM 459200101 83,884 -165,427 -66.35 11,178 -64.38 0.4763
2021-01-27 2020-12-31 13F International Business Machine COM 459200101 249,311 -4,204 -1.66 31,383 1.74 1.4286
2020-10-20 2020-09-30 13F International Business Machine COM 459200101 253,515 -1,792 -0.70 30,845 0.04 1.5358
2020-07-30 2020-06-30 13F International Business Machine COM 459200101 255,307 -5,102 -1.96 30,833 6.74 1.6661
2020-05-11 2020-03-31 13F International Business Machine COM 459200101 260,409 8,223 3.26 28,887 -14.54 1.7917
2020-01-28 2019-12-31 13F International Business Machine COM 459200101 252,186 12,785 5.34 33,803 -2.90 1.7216
2019-10-29 2019-09-30 13F International Business Machine COM 459200101 239,401 6,133 2.63 34,814 8.23 2.0130
2019-07-29 2019-06-30 13F International Business Machine COM 459200101 233,268 8,242 3.66 32,168 1.31 1.9642
2019-05-01 2019-03-31 13F International Business Machine COM 459200101 225,026 71,286 46.37 31,751 81.68 2.1189
2019-02-04 2018-12-31 13F International Business Machine COM 459200101 153,740 -1,031 -0.67 17,476 -25.33 1.3502
2018-10-24 2018-09-30 13F International Business Machine COM 459200101 154,771 2,355 1.55 23,403 9.91 1.6394
2018-08-14 2018-06-30 13F International Business Machine COM 459200101 152,416 -4,772 -3.04 21,293 -11.71 1.6642
2018-05-01 2018-03-31 13F International Business Machine COM 459200101 157,188 -4,473 -2.77 24,117 -2.76 1.8611
2018-02-02 2017-12-31 13F International Business Machine COM 459200101 161,661 -3,143 -1.91 24,802 3.73 1.7858
2017-11-13 2017-09-30 13F International Business Machine COM 459200101 164,804 -11 -0.01 23,910 -5.69 1.7592
2017-08-09 2017-06-30 13F International Business Machine COM 459200101 164,815 5,722 3.60 25,353 -8.49 1.8732
2017-05-15 2017-03-31 13F International Business Machine COM 459200101 159,093 5,690 3.71 27,704 8.80 2.1551
2017-01-26 2016-12-31 13F International Business Machine COM 459200101 153,403 3,468 2.31 25,463 6.91 2.1287
2016-10-24 2016-09-30 13F International Business Machine COM 459200101 149,935 34,690 30.10 23,817 36.16 2.0094
2016-07-18 2016-06-30 13F International Business Machine COM 459200101 115,245 3,218 2.87 17,492 3.10 1.5177
2016-04-19 2016-03-31 13F International Business Machine COM 459200101 112,027 9,267 9.02 16,966 19.97 1.5777
2016-01-21 2015-12-31 13F International Business Machine COM 459200101 102,760 -23,457 -18.58 14,142 -22.71 1.3164
2015-10-19 2015-09-30 13F International Business Machine COM 459200101 126,217 4,956 4.09 18,298 -7.23 1.8336
2015-08-13 2015-06-30 13F International Business Machine COM 459200101 121,261 33,427 38.06 19,724 39.92 1.9014
2015-04-21 2015-03-31 13F International Business Machine COM 459200101 87,834 87,834 0.00 14,097 1.2325
2015-01-28 2014-12-31 13F International Business Machine COM 459200101 0 -79,100 -100.00 0 -100.00
2014-10-29 2014-09-30 13F International Business Machine COM 459200101 79,100 829 1.06 15,015 5.83 1.4538
2014-07-23 2014-06-30 13F International Business Machine COM 459200101 78,271 4,771 6.49 14,188 0.28 1.3915
2014-05-05 2014-03-31 13F International Business Machine COM 459200101 73,500 -8,683 -10.57 14,148 -8.22 1.5436
2014-02-14 2013-12-31 13F International Business Machine COM 459200101 82,183 6,593 8.72 15,415 10.12 1.7979
2013-10-24 2013-09-30 13F International Business Machine COM 459200101 75,590 4,046 5.66 13,998 2.38 1.8406
2013-07-22 2013-06-30 13F International Business Machine COM 459200101 71,544 71,544 13,673 1.9428
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.