International Business Machines Corporation
DE ˙ XTRA ˙ US4592001014
266,90 € ↓ -18,10 (-6,35%)
2026-06-03
AKTIENPREIS
SecurityDE:IBM / International Business Machines Corporation
InstitutionTower Bridge Advisors
Latest Disclosed Ownership10,038 shares
Latest Disclosed Value $ 2,433,111
Tower Bridge Advisors reports 9.06% decrease in ownership of IBM / International Business Machines Corporation

On May 12, 2026 - Tower Bridge Advisors filed a 13F-HR form disclosing ownership of 10,038 shares of International Business Machines Corporation (DE:IBM) valued at $2,096,938 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 11,038 shares of International Business Machines Corporation. This represents a change in shares of -9.06% during the quarter. The current value of the position is $2,679,142 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.

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)
2026-05-12 2026-03-31 13F International Business Machines Common 459200101 10,038 -1,000 -9.06 2,433 -25.57 0.1706
2026-02-13 2025-12-31 13F INT'L BUSINESS MAC COMMON 459200101 11,038 -1,010 -8.38 3,270 -3.82 0.3302
2025-11-12 2025-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 12,048 -155 -1.27 3,399 -5.50 0.3395
2025-08-11 2025-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 12,203 -1,100 -8.27 3,597 8.77 0.3867
2025-05-08 2025-03-31 13F INT'L BUSINESS MAC COMMON 459200101 13,303 -170 -1.26 3,308 11.69 0.3696
2025-02-05 2024-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 13,473 -11 -0.08 2,962 -0.67 0.3154
2024-11-06 2024-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 13,484 2,475 22.48 2,981 56.57 0.3093
2024-07-24 2024-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 11,009 418 3.95 1,904 -5.84 0.2116
2024-04-29 2024-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 10,591 -896 -7.80 2,022 7.67 0.2058
2024-02-14 2023-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 11,487 88 0.77 1,879 17.45 0.1616
2023-11-01 2023-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 11,399 -670 -5.55 1,599 -0.93 0.1480
2023-07-20 2023-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 12,069 -15,821 -56.73 1,615 -55.85 0.1480
2023-04-26 2023-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 27,890 -1,285 -4.40 3,656 -11.05 0.2994
2023-01-27 2022-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 29,175 -1,125 -3.71 4,110 14.20 0.3414
2022-11-14 2022-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 30,300 -225 -0.74 3,600 -16.48 0.3199
2022-07-21 2022-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 30,525 -800 -2.55 4,310 5.82 0.3515
2022-05-05 2022-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 31,325 288 0.93 4,073 -1.83 0.2722
2022-02-09 2021-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 31,037 -10,385 -25.07 4,148 -27.91 0.2547
2021-10-28 2021-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 41,422 -150 -0.36 5,755 -5.58 0.3839
2021-08-10 2021-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 41,572 -13,937 -25.11 6,094 -17.62 0.4062
2021-05-12 2021-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 55,509 -5,442 -8.93 7,397 -3.58 0.5569
2021-02-11 2020-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 60,951 568 0.94 7,673 4.44 0.6249
2020-11-13 2020-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 60,383 -672 -1.10 7,347 -0.37 0.7506
2020-07-22 2020-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 61,055 999 1.66 7,374 10.67 0.8268
2020-04-27 2020-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 60,056 36 0.06 6,662 -17.19 0.8745
2020-02-05 2019-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 60,020 -12,066 -16.74 8,045 -18.89 0.8498
2019-11-12 2019-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 72,086 2,071 2.96 9,920 2.73 1.0861
2019-08-06 2019-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 70,015 -702 -0.99 9,655 -3.24 1.0800
2019-04-30 2019-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 70,717 -5,515 -7.23 9,978 15.15 1.1582
2019-02-07 2018-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 76,232 -14,786 -16.25 8,665 -37.04 1.1163
2018-10-23 2018-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 91,018 -2,455 -2.63 13,763 5.39 1.4378
2018-08-09 2018-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 93,473 -56 -0.06 13,058 -9.00 1.4562
2018-05-02 2018-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 93,529 21,898 30.57 14,350 30.59 1.5912
2018-01-30 2017-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 71,631 37,489 109.80 10,990 121.87 1.1787
2017-11-06 2017-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 34,142 -5,686 -14.28 4,953 -19.15 0.5629
2017-07-26 2017-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 39,828 -1,600 -3.86 6,127 -15.08 0.7024
2017-05-02 2017-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 41,428 -202 -0.49 7,214 4.40 0.8423
2017-01-31 2016-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 41,630 -3,280 -7.30 6,910 -3.13 0.8375
2016-10-27 2016-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 44,910 -2,382 -5.04 7,134 -0.61 0.8686
2016-08-12 2016-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 47,292 -10,650 -18.38 7,178 -18.21 0.8942
2016-05-12 2016-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 57,942 -4,753 -7.58 8,775 1.70 1.0960
2016-02-02 2015-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 62,695 -21,865 -25.86 8,628 -29.61 1.1240
2015-11-13 2015-09-30 13F/A-1 INT'L BUSINESS MACHIN COMMON 459200101 84,560 335 0.40 12,259 -10.53 1.6869
2015-11-12 2015-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 84,225 13,700
2015-08-13 2015-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 84,225 1,675 2.03 13,700 3.40 1.7329
2015-05-14 2015-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 82,550 -1,435 -1.71 13,249 -1.67 1.6784
2015-02-19 2014-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 83,985 -10,466 -11.08 13,475 -24.85 1.6568
2014-11-12 2014-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 94,451 -407 -0.43 17,930 4.27 2.2616
2014-08-26 2014-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 94,858 -278 -0.29 17,195 -6.11 2.1204
2014-05-08 2014-03-31 13F INT'L BUSINESS MACHIN COMMON 459200101 95,136 4,315 4.75 18,313 7.50 2.3531
2014-02-10 2013-12-31 13F INT'L BUSINESS MACHIN COMMON 459200101 90,821 4,588 5.32 17,035 6.68 2.2362
2013-11-05 2013-09-30 13F INT'L BUSINESS MACHIN COMMON 459200101 86,233 4,680 5.74 15,969 2.46 2.2907
2013-07-24 2013-06-30 13F INT'L BUSINESS MACHIN COMMON 459200101 81,553 81,553 15,586 2.3102
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.