International Business Machines Corporation
MX ˙ BMV ˙ US4592001014
SecurityMX:IBM / International Business Machines Corporation
InstitutionMan Group plc
Latest Disclosed Ownership162,675 shares
Latest Disclosed Value $ 39,430,793
Man Group plc ownership in IBM / International Business Machines Corporation

On May 15, 2026 - Man Group plc filed a 13F-HR form disclosing ownership of 162,675 shares of International Business Machines Corporation (MX:IBM) valued at $39,430,793 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 84,436 shares of International Business Machines Corporation. This represents a change in shares of 92.66% during the quarter.

Man Group plc has a history of taking positions in derivatives of the underlying security (IBM) in the form of stock options. The firm currently holds call options representing 56,100 of underlying shares valued at $13,598,079 USD and put options representing 56,100 of underlying shares valued at $13,598,079 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:IBM / International Business Machines Corporation Historical Put/Call Ratio
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 162,675 78,239 92.66 39,431 57.66 0.0715
2026-02-17 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 84,436 -25,972 -23.52 25,011 -19.72 0.0425
2025-11-14 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 110,408 73,235 197.01 31,153 184.31 0.0542
2025-08-14 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 37,173 -16,077 -30.19 10,958 -17.25 0.0209
2025-05-15 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 53,250 977 1.87 13,241 15.23 0.0336
2025-02-14 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 52,273 7,163 15.88 11,491 15.23 0.0302
2024-11-14 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 45,110 -38,205 -45.86 9,973 -30.79 0.0260
2024-08-14 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 83,315 10,184 13.93 14,409 3.18 0.0364
2024-05-15 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 73,131 23,629 47.73 13,965 72.49 0.0352
2024-02-14 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 49,502 8,096 -13.12 0.0225
2023-11-14 2023-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 9,319 29.68 0.0289
2023-08-14 2023-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 53,709 7,187 -19.15 0.0222
2023-05-15 2023-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 8,889 -29.89 0.0316
2023-02-14 2022-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 89,982 29,137 47.89 12,678 75.36 0.0454
2022-11-14 2022-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 60,845 7,229 -1.97 0.0335
2022-08-15 2022-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 7,374 -39.23 0.0312
2022-05-16 2022-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 93,323 23,628 33.90 12,134 30.26 0.0422
2022-02-14 2021-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 69,695 -10,479 -13.07 9,315 -16.37 0.0300
2021-11-15 2021-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 80,174 6,032 8.14 11,138 2.48 0.0391
2021-08-16 2021-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 74,142 57,692 350.71 10,868 395.80 0.0383
2021-05-17 2021-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 16,450 -656 -3.83 2,192 1.81 0.0096
2021-02-16 2020-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 17,106 -11,823 -40.87 2,153 -38.84 0.0095
2020-11-16 2020-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 28,929 2,518 9.53 3,520 10.34 0.0139
2020-08-14 2020-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 26,411 4,912 22.85 3,190 33.81 0.0161
2020-05-15 2020-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 21,499 -67,346 -75.80 2,384 -79.98 0.0154
2020-02-18 2019-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 88,845 21,422 31.77 11,909 21.47 0.0392
2019-11-14 2019-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 67,423 -230,610 -77.38 9,804 -76.15 0.0364
2019-08-14 2019-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 298,033 -2,202 -0.73 41,099 -2.98 0.1485
2019-05-15 2019-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 300,235 -44,937 -13.02 42,363 7.97 0.1607
2019-02-14 2018-12-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 345,172 43,420 14.39 39,235 -14.01 0.1746
2018-11-14 2018-09-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 301,752 175,509 139.02 45,628 158.72 0.1666
2018-08-14 2018-06-30 13F INTERNATIONAL BUSINESS MACHS COM 459200101 126,243 2,750 2.23 17,636 -6.91 0.0726
2018-05-15 2018-03-31 13F INTERNATIONAL BUSINESS MACHS COM 459200101 123,493 123,493 18,946 0.0867
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM Call 56,100 -15.77 13,598 -31.07 n/a n/a n/a
2026-02-17 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM Call 66,600 23.33 19,728 29.48 n/a n/a n/a
2025-11-14 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM Call 54,000 -19.76 15,237 -23.20 n/a n/a n/a
2025-08-14 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM Call 67,300 -7.17 19,839 10.05 n/a n/a n/a
2025-05-15 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM Call 72,500 11.20 18,028 25.78 n/a n/a n/a
2025-02-14 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM Call 65,200 37.55 14,333 36.77 n/a n/a n/a
2024-11-14 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM Call 47,400 91.13 10,479 144.32 n/a n/a n/a
2024-08-14 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM Call 24,800 113.79 4,289 93.63 n/a n/a n/a
2024-05-15 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM Call 11,600 314.29 2,215 384.68 n/a n/a n/a
2024-02-14 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM Call 2,800 458 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F INTERNATIONAL BUSINESS MACHS COM Put 56,100 -15.77 13,598 -31.07 n/a n/a n/a
2026-02-17 2025-12-31 13F INTERNATIONAL BUSINESS MACHS COM Put 66,600 36.48 19,728 43.27 n/a n/a n/a
2025-11-14 2025-09-30 13F INTERNATIONAL BUSINESS MACHS COM Put 48,800 -6.15 13,769 -10.17 n/a n/a n/a
2025-08-14 2025-06-30 13F INTERNATIONAL BUSINESS MACHS COM Put 52,000 -28.28 15,329 -14.97 n/a n/a n/a
2025-05-15 2025-03-31 13F INTERNATIONAL BUSINESS MACHS COM Put 72,500 11.20 18,028 25.78 n/a n/a n/a
2025-02-14 2024-12-31 13F INTERNATIONAL BUSINESS MACHS COM Put 65,200 37.55 14,333 36.77 n/a n/a n/a
2024-11-14 2024-09-30 13F INTERNATIONAL BUSINESS MACHS COM Put 47,400 91.13 10,479 144.32 n/a n/a n/a
2024-08-14 2024-06-30 13F INTERNATIONAL BUSINESS MACHS COM Put 24,800 113.79 4,289 93.63 n/a n/a n/a
2024-05-15 2024-03-31 13F INTERNATIONAL BUSINESS MACHS COM Put 11,600 314.29 2,215 384.68 n/a n/a n/a
2024-02-14 2023-12-31 13F INTERNATIONAL BUSINESS MACHS COM Put 2,800 458 n/a n/a n/a
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.