International Business Machines Corporation
US ˙ NYSE ˙ US4592001014

SecurityIBM / International Business Machines Corporation
InstitutionCastleview Partners, Llc
Latest Disclosed Ownership1,921 shares
Latest Disclosed Value $ 465,631
Castleview Partners, Llc reports 13.60% increase in ownership of IBM / International Business Machines Corporation

On May 1, 2026 - Castleview Partners, Llc filed a 13F-HR form disclosing ownership of 1,921 shares of International Business Machines Corporation (US:IBM) valued at $465,631 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 12, 2026 disclosing 1,691 shares of International Business Machines Corporation. This represents a change in shares of 13.60% during the quarter. The current value of the position is $587,115 USD.

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)
2026-05-01 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,921 230 13.60 466 -7.00 0.2387
2026-01-12 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,691 246 17.02 501 22.85 0.2482
2025-10-10 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,445 108 8.08 408 3.30 0.2214
2025-07-16 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,337 65 5.11 394 24.68 0.2533
2025-04-22 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,272 -336 -20.90 316 -10.48 0.2141
2025-01-21 2024-12-31 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 1,608 86 5.65 354 5.06 0.1904
2025-01-21 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,522 0 336 0.1939
2024-10-21 2024-09-30 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 1,522 55 3.75 336 32.81 0.1940
2024-10-09 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,467 0 254 0.1442
2024-07-31 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,467 -74 -4.80 254 -13.95 0.1442
2024-05-10 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,541 239 18.36 294 38.68 0.1643
2024-02-05 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,302 401 44.51 213 68.25 0.1492
2023-10-26 2023-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 901 -4 -0.44 126 4.13 0.1168
2023-08-15 2023-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 905 -858 -48.67 121 -47.62 0.1091
2023-05-16 2023-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,763 62 3.64 231 -3.35 0.2048
2023-02-01 2022-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,701 7 0.41 240 18.91 0.2334
2022-11-10 2022-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 1,694 1,593 1,577.23 201 4,925.00 0.1920
2022-08-17 2022-06-30 13F/A-1 INVESCO TOTAL RE ETP 459200101 101 -3,866 -97.45 5 -99.22 0.0039
2022-08-16 2022-06-30 13F IBM Equity 459200101 266,707 262,740 1,889 0.0212
2022-05-16 2022-03-31 13F INTL BUSINESS MACHINES Equity 459200101 3,967 -474,669 -99.17 515 -85.62 0.3204
2022-02-17 2021-12-31 13F IBM Equity 459200101 478,636 476,780 25,688.58 3,581 1,216.54 0.0286
2021-08-17 2021-06-30 13F IBM Equity 459200101 1,856 -3,831 -67.36 272 -68.84 0.1192
2018-05-07 2018-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 5,687 5,687 873 0.7216
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.