International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionQuadrature Capital Ltd
Latest Disclosed Ownership25,155 shares
Latest Disclosed Value $ 6,097,320
Quadrature Capital Ltd ownership in IBM / International Business Machines Corporation

On May 15, 2026 - Quadrature Capital Ltd filed a 13F-HR form disclosing ownership of 25,155 shares of International Business Machines Corporation (MX:IBM) valued at $6,097,320 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 14, 2023 disclosing 0 shares of International Business Machines Corporation.

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)
2026-05-15 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 25,155 25,155 6,097 0.0726
2023-02-14 2022-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 0 -78,198 -100.00 0 -100.00
2022-11-14 2022-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 78,198 78,198 9,298 0.3222
2021-11-15 2021-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 0 -65,672 -100.00 0 -100.00
2021-08-16 2021-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 65,672 46,097 235.49 9,629 269.07 0.3766
2021-05-17 2021-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 19,575 -44,312 -69.36 2,609 -67.58 0.1294
2021-02-16 2020-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 63,887 63,887 8,048 0.3998
2020-05-15 2020-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 0 -90,015 -100.00 0 -100.00
2020-02-14 2019-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 90,015 90,015 12,060 0.5025
2019-05-14 2019-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 0 -3,380 -100.00 0 -100.00
2019-02-13 2018-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 3,380 3,380 384 0.0714
2018-11-13 2018-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 0 -63,184 -100.00 0 -100.00
2018-08-10 2018-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 63,184 47,932 314.27 8,827 277.22 0.8311
2018-05-11 2018-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 15,252 -11,720 -43.45 2,340 -43.48 0.1832
2018-02-12 2017-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 26,972 -62,035 -69.70 4,140 -67.91 0.3696
2017-11-13 2017-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 89,007 89,007 12,903 1.6347
2016-05-13 2016-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 0 -2,725 -100.00 0 -100.00
2016-02-11 2015-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 2,725 -22,483 -89.19 375 -89.73 0.0576
2015-11-12 2015-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 25,208 25,208 3,652 1.2203
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.