International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionWestmount Partners, LLC
Latest Disclosed Ownership19,355 shares
Latest Disclosed Value $ 4,691,576
Westmount Partners, LLC reports 0.35% increase in ownership of IBM / International Business Machines Corporation

On April 16, 2026 - Westmount Partners, LLC filed a 13F-HR form disclosing ownership of 19,355 shares of International Business Machines Corporation (MX:IBM) valued at $4,691,576 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 15, 2026 disclosing 19,288 shares of International Business Machines Corporation. This represents a change in shares of 0.35% 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)
2026-04-16 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,355 67 0.35 4,692 -17.89 1.1548
2026-01-15 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,288 32 0.17 5,713 3.57 1.4244
2025-10-14 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,256 66 0.34 5,517 -2.48 1.4246
2025-07-09 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,190 68 0.36 5,657 18.97 1.5535
2025-05-01 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,122 -293 -1.51 4,755 11.41 1.4503
2025-01-13 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,415 -38 -0.20 4,268 -0.77 1.2966
2025-01-13 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,453 -304 -1.54 4,301 24.31 1.2933
2025-01-28 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,757 -1 -0.01 3,459 -8.30 1.1419
2025-01-28 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,758 72 0.37 3,773 17.18 1.3574
2025-01-28 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,686 -702 -3.44 3,220 12.55 1.3147
2025-01-28 2023-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 20,388 -372 -1.79 2,860 2.99 1.2601
2025-01-28 2023-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 20,760 944 4.76 2,778 6.93 1.2092
2025-01-29 2023-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,816 53 0.27 2,598 -6.72 1.2007
2025-01-28 2022-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,763 19,763 2,784 1.4466
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.