International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionTidemark, LLC
Latest Disclosed Ownership425 shares
Latest Disclosed Value $ 103,018
Tidemark, LLC reports 18.38% increase in ownership of IBM / International Business Machines Corporation

On May 7, 2026 - Tidemark, LLC filed a 13F-HR form disclosing ownership of 425 shares of International Business Machines Corporation (MX:IBM) valued at $103,018 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 359 shares of International Business Machines Corporation. This represents a change in shares of 18.38% 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 INTERNATIONAL BUSINESS MACHS COM Stock 459200101 425 66 18.38 103 -2.83 0.0262
2026-02-10 2025-12-31 13F INTL BUSINESS Common Stock 459200101 359 48 15.43 106 21.84 0.0302
2025-11-03 2025-09-30 13F INTL BUSINESS Common Stock 459200101 311 40 14.76 88 10.13 0.0256
2025-08-11 2025-06-30 13F INTL BUSINESS Common Stock 459200101 271 0 0.00 80 17.91 0.0257
2025-05-09 2025-03-31 13F INTL BUSINESS Common Stock 459200101 271 0 0.00 67 13.56 0.0247
2025-02-10 2024-12-31 13F INTL BUSINESS Common Stock 459200101 271 -68 -20.06 60 -21.33 0.0228
2024-11-07 2024-09-30 13F INTL BUSINESS Common Stock 459200101 339 -104 -23.48 75 -1.32 0.0308
2024-08-12 2024-06-30 13F INTL BUSINESS Common Stock 459200101 443 103 30.29 77 18.75 0.0352
2024-05-13 2024-03-31 13F INTL BUSINESS Common Stock 459200101 340 0 0.00 65 16.36 0.0362
2024-02-09 2023-12-31 13F INTL BUSINESS Common Stock 459200101 340 340 56 0.0348
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.