International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionElgethun Capital Management
Latest Disclosed Ownership354 shares
Latest Disclosed Value $ 85,802
Elgethun Capital Management reports 71.61% decrease in ownership of IBM / International Business Machines Corporation

On May 14, 2026 - Elgethun Capital Management filed a 13F-HR form disclosing ownership of 354 shares of International Business Machines Corporation (MX:IBM) valued at $85,802 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 1,247 shares of International Business Machines Corporation. This represents a change in shares of -71.61% 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)
2026-05-14 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 354 -893 -71.61 86 -76.96 0.0142
2026-02-10 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,247 5 0.40 369 5.43 0.0638
2025-11-13 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,242 7 0.57 351 -3.85 0.0637
2025-08-13 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,235 6 0.49 364 19.34 0.0733
2025-05-09 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,229 7 0.57 306 13.81 0.0683
2025-02-13 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,222 9 0.74 269 0.00 0.0652
2024-11-14 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,213 9 0.75 268 28.85 0.0630
2024-08-14 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,204 12 1.01 208 -7.96 0.0525
2024-05-14 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,192 10 0.85 227 17.10 0.0572
2024-02-14 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,182 12 1.03 193 16.97 0.0547
2023-11-13 2023-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,170 -163 -12.23 165 -7.30 0.0498
2023-08-11 2023-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,333 1,333 178 0.0538
2018-08-09 2018-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 0 -8,769 -100.00 0 -100.00
2018-05-11 2018-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 8,769 -7,995 -47.69 1,345 -47.71 0.9409
2018-02-09 2017-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 16,764 -3,859 -18.71 2,572 -14.04 1.7997
2017-11-13 2017-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 20,623 -4,534 -18.02 2,992 -22.69 2.1974
2017-08-10 2017-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 25,157 -1,674 -6.24 3,870 -17.17 3.0126
2017-05-11 2017-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 26,831 20 0.07 4,672 4.97 3.7457
2017-02-09 2016-12-31 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 26,811 26,811 4,451 3.4783
2017-02-09 2016-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 26,811 4,451
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.