International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionCalamos Wealth Management LLC
Latest Disclosed Ownership8,240 shares
Latest Disclosed Value $ 1,997,331
Calamos Wealth Management LLC reports 2.94% decrease in ownership of IBM / International Business Machines Corporation

On May 4, 2026 - Calamos Wealth Management LLC filed a 13F-HR form disclosing ownership of 8,240 shares of International Business Machines Corporation (MX:IBM) valued at $1,997,331 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 8,490 shares of International Business Machines Corporation. This represents a change in shares of -2.94% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-04 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 8,240 -250 -2.94 1,997 -20.56 0.0687
2026-01-29 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 8,490 162 1.95 2,515 7.02 0.0867
2025-10-20 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 8,328 3,589 75.73 2,350 68.27 0.0847
2025-07-29 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 4,739 790 20.01 1,397 42.30 0.0591
2025-04-29 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 3,949 1,950 97.55 982 123.46 0.0490
2025-01-24 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,999 84 4.39 439 3.78 0.0220
2024-11-12 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,915 22 1.16 423 29.36 0.0217
2024-07-25 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,893 786 71.00 327 54.98 0.0174
2024-05-08 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,107 -900 -44.84 211 -35.67 0.0119
2024-01-31 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,007 55 2.82 328 20.15 0.0207
2023-10-26 2023-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,952 0 0.00 274 4.60 0.0208
2023-07-28 2023-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,952 0 0.00 261 2.35 0.0191
2023-05-04 2023-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,952 9 0.46 256 -6.59 0.0200
2023-01-26 2022-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,943 0 0.00 274 18.18 0.0213
2022-10-24 2022-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,943 -29 -1.47 231 -16.91 0.0198
2022-08-01 2022-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,972 -600 -23.33 278 -16.77 0.0247
2022-05-03 2022-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,572 440 20.64 334 17.19 0.0250
2022-02-01 2021-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,132 0 0.00 285 -3.72 0.0208
2021-10-26 2021-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,132 -1,148 -35.00 296 -38.46 0.0239
2021-07-22 2021-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 3,280 -1,122 -25.49 481 -18.06 0.0375
2021-04-12 2021-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 4,402 129 3.02 587 9.11 0.0484
2021-01-27 2020-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 4,273 4,273 538 0.0491
2015-08-17 2015-06-30 13F INT'L BUSINESS MACHINES COMMON STOCK 459200101 0 -3,020 -100.00 0 -100.00
2015-05-12 2015-03-31 13F INT'L BUSINESS MACHINES COMMON STOCK 459200101 3,020 -595 -16.46 485 -16.38 0.1212
2015-02-13 2014-12-31 13F INT'L BUSINESS MACHINES COMMON STOCK 459200101 3,615 3,615 580 0.1665
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.