International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionTcw Group Inc
Latest Disclosed Ownership487,115 shares
Latest Disclosed Value $ 118,071,949
Tcw Group Inc reports 5.37% decrease in ownership of IBM / International Business Machines Corporation

On May 14, 2026 - Tcw Group Inc filed a 13F-HR form disclosing ownership of 487,115 shares of International Business Machines Corporation (MX:IBM) valued at $118,071,949 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 514,756 shares of International Business Machines Corporation. This represents a change in shares of -5.37% 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)
2026-05-14 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 487,115 -27,641 -5.37 118,072 -22.56 0.4728
2026-02-17 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 514,756 27,096 5.56 152,476 10.81 1.0922
2025-11-14 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 487,660 -103,144 -17.46 137,598 -20.99 1.1522
2025-08-14 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 590,804 -37,808 -6.01 174,157 11.42 1.3645
2025-05-07 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 628,612 -56,775 -8.28 156,311 3.74 1.3988
2025-02-04 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 685,387 -9,133 -1.32 150,669 -1.87 1.2651
2024-11-19 2024-09-30 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 694,520 54,886 8.58 153,544 38.80 1.3424
2024-11-08 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 694,520 54,886 153,544 0.6904
2024-07-19 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 639,634 220,395 52.57 110,625 38.18 0.9888
2024-05-10 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 419,239 78,569 23.06 80,058 43.68 0.8105
2024-02-09 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 340,670 17,983 5.57 55,719 23.08 0.6209
2023-11-15 2023-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 322,687 -53,293 -14.17 45,273 -10.01 0.5687
2023-08-14 2023-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 375,980 27,831 7.99 50,310 10.23 0.5579
2023-05-15 2023-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 348,149 -51,562 -12.90 45,639 -18.96 0.5838
2023-02-14 2022-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 399,711 -9,311 -2.28 56,315 15.88 0.8062
2022-10-27 2022-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 409,022 -23,949 -5.53 48,596 -20.51 0.7109
2022-07-19 2022-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 432,971 -22,162 -4.87 61,131 3.30 0.8003
2022-04-19 2022-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 455,133 -7,338 -1.59 59,177 -4.27 0.5647
2022-01-26 2021-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 462,471 54,406 13.33 61,814 9.03 0.5083
2021-10-26 2021-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 408,065 -4,122 -1.00 56,692 -6.17 0.1459
2021-07-23 2021-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 412,187 -11,926 -2.81 60,423 6.91 0.5236
2021-05-05 2021-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 424,113 -13,849 -3.16 56,517 2.52 0.5415
2021-02-02 2020-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 437,962 8,510 1.98 55,130 5.51 0.4799
2020-10-30 2020-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 429,452 -26,209 -5.75 52,251 -5.05 0.5698
2020-08-05 2020-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 455,661 -76,362 -14.35 55,030 -6.76 0.6419
2020-05-05 2020-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 532,023 213 0.04 59,017 -17.21 0.8161
2020-02-10 2019-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 531,810 8,276 1.58 71,284 -6.37 0.7894
2019-11-13 2019-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 523,534 24,819 4.98 76,132 10.70 0.8674
2019-08-07 2019-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 498,715 -4,157 -0.83 68,772 -3.08 0.7313
2019-05-13 2019-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 502,872 124,722 32.98 70,955 65.07 0.6795
2019-02-11 2018-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 378,150 333,081 739.05 42,984 530.73 0.4447
2018-10-30 2018-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 45,069 45,069 6,815 0.0559
2018-08-01 2018-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 0 -23,977 -100.00 0 -100.00
2018-05-10 2018-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 23,977 -134,665 -84.89 3,679 -84.88 0.0299
2018-02-09 2017-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 158,642 -53 -0.03 24,339 5.71 0.1960
2017-11-06 2017-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 158,695 -15,665 -8.98 23,024 -14.16 0.1830
2017-08-11 2017-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 174,360 28,415 19.47 26,822 5.54 0.2227
2017-05-11 2017-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 145,945 -28,067 -16.13 25,414 -12.01 0.2120
2017-02-10 2016-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 174,012 72,085 70.72 28,884 78.40 0.2174
2016-11-14 2016-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 101,927 5,799 6.03 16,191 10.97 0.1230
2016-08-12 2016-06-30 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 96,128 18,630 24.04 14,590 24.31 0.1102
2016-08-11 2016-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 96,128 14,590
2016-05-16 2016-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 77,498 -48,921 -38.70 11,737 -32.54 0.0861
2016-02-16 2015-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 126,419 -32,401 -20.40 17,398 -24.44 0.1249
2015-11-13 2015-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 158,820 4,835 3.14 23,024 -8.08 0.1652
2015-08-12 2015-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 153,985 -192,176 -55.52 25,047 -54.92 0.1613
2015-05-13 2015-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 346,161 56,579 19.54 55,559 19.58 0.2667
2015-02-13 2014-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 289,582 -191,500 -39.81 46,460 -49.13 0.1944
2014-11-14 2014-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 481,082 -4,838 -1.00 91,323 3.68 0.3673
2014-08-14 2014-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 485,920 -16,143 -3.22 88,083 -8.86 0.3628
2014-05-13 2014-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 502,063 -18,457 -3.55 96,642 -0.97 0.4012
2014-02-18 2013-12-31 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 520,520 -4,310 -0.82 97,589 0.41 0.4113
2014-02-14 2013-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 97,589 520,520
2013-11-14 2013-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 524,830 233 0.04 97,189 -3.06 0.4489
2013-08-14 2013-06-30 13F/A-1 INTERNATIONAL BUSINESS MACHS COM 459200101 524,597 524,597 100,256 0.4943
2013-08-14 2013-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 524,597 100,256
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.