Microsoft Corporation
BG ˙ BUL ˙ US5949181045
SecurityBG:MSF / Microsoft Corporation
InstitutionCIBC World Markets Inc.
Latest Disclosed Ownership2,045,058 shares
Latest Disclosed Value $ 757,019,206
CIBC World Markets Inc. ownership in MSF / Microsoft Corporation

On May 14, 2026 - CIBC World Markets Inc. filed a 13F-HR form disclosing ownership of 2,045,058 shares of Microsoft Corporation (BG:MSF) valued at $757,019,206 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 2,503,744 shares of Microsoft Corporation. This represents a change in shares of -18.32% during the quarter.

CIBC World Markets Inc. has a history of taking positions in derivatives of the underlying security (MSF) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 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.

BG:MSF / Microsoft 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)
2026-05-14 2026-03-31 13F MICROSOFT COM 594918104 2,045,058 -458,686 -18.32 757,019 -37.48 1.2357
2026-02-10 2025-12-31 13F MICROSOFT COM 594918104 2,503,744 1,038,107 70.83 1,210,861 59.51 1.9523
2025-11-06 2025-09-30 13F MICROSOFT COM 594918104 1,465,637 16,163 1.12 759,126 5.29 1.3606
2025-08-14 2025-06-30 13F MICROSOFT COM 594918104 1,449,474 -420,746 -22.50 720,983 2.70 1.4278
2025-05-14 2025-03-31 13F MICROSOFT COM 594918104 1,870,220 6,115 0.33 702,062 89,334.52 1.5022
2025-01-23 2024-12-31 13F MICROSOFT COM 594918104 1,864,105 151,197 8.83 786 6.51 1.6461
2024-11-12 2024-09-30 13F MICROSOFT COM 594918104 1,712,908 33,162 1.97 737 -1.73 1.5355
2024-08-07 2024-06-30 13F MICROSOFT COM 594918104 1,679,746 -3,052 -0.18 751 6.08 1.7304
2024-05-13 2024-03-31 13F MICROSOFT COM 594918104 1,682,798 261,915 18.43 708 32.40 1.6805
2024-02-13 2023-12-31 13F MICROSOFT COM 594918104 1,420,883 57,431 4.21 534 24.19 1.3549
2023-11-13 2023-09-30 13F MICROSOFT COM 594918104 1,363,452 29,487 2.21 431 -5.29 1.4213
2023-08-11 2023-06-30 13F MICROSOFT COM 594918104 1,333,965 -14,020 -1.04 454 17.01 1.4464
2023-05-12 2023-03-31 13F MICROSOFT COM 594918104 1,347,985 -11,879 -0.87 389 19.02 1.3098
2023-02-13 2022-12-31 13F MICROSOFT COM 594918104 1,359,864 -8,189 -0.60 326 -99.90 1.1535
2022-11-10 2022-09-30 13F MICROSOFT COM 594918104 1,368,053 19,578 1.45 318,620 -8.00 1.2239
2022-08-10 2022-06-30 13F MICROSOFT COM 594918104 1,348,475 52,286 4.03 346,329 -13.34 1.2169
2022-05-12 2022-03-31 13F MICROSOFT COM 594918104 1,296,189 14,798 1.15 399,628 -7.27 1.2667
2022-02-14 2021-12-31 13F MICROSOFT COM 594918104 1,281,391 33,701 2.70 430,957 22.52 1.2393
2021-11-12 2021-09-30 13F MICROSOFT COM 594918104 1,247,690 -1,625,274 -56.57 351,749 -54.80 1.1537
2021-08-12 2021-06-30 13F MICROSOFT COM 594918104 2,872,964 -338,064 -10.53 778,286 2.80 2.1721
2021-05-11 2021-03-31 13F MICROSOFT COM 594918104 3,211,028 -1,046,285 -24.58 757,064 -20.05 2.2045
2021-02-08 2020-12-31 13F MICROSOFT COM 594918104 4,257,313 1,134,748 36.34 946,912 44.18 3.0094
2020-11-12 2020-09-30 13F MICROSOFT COM 594918104 3,122,565 4,219 0.14 656,769 3.49 2.8514
2020-08-13 2020-06-30 13F MICROSOFT COM 594918104 3,118,346 -106,697 -3.31 634,615 24.77 2.8691
2020-05-15 2020-03-31 13F MICROSOFT COM 594918104 3,225,043 -1,165,965 -26.55 508,622 -26.55 2.6006
2020-02-13 2019-12-31 13F MICROSOFT COM 594918104 4,391,008 692,201 18.71 692,462 34.66 2.8273
2019-11-13 2019-09-30 13F MICROSOFT COM 594918104 3,698,807 1,917,815 107.68 514,245 115.54 2.3089
2019-08-08 2019-06-30 13F MICROSOFT COM 594918104 1,780,992 371,557 26.36 238,582 43.53 1.0566
2019-05-09 2019-03-31 13F MICROSOFT COM 594918104 1,409,435 -34,322 -2.38 166,229 13.36 0.7646
2019-02-13 2018-12-31 13F MICROSOFT COM 594918104 1,443,757 -884,511 -37.99 146,642 -44.93 0.7497
2018-11-09 2018-09-30 13F MICROSOFT COM 594918104 2,328,268 1,183,374 103.36 266,284 135.86 1.1414
2018-08-08 2018-06-30 13F MICROSOFT COM 594918104 1,144,894 66,545 6.17 112,898 14.71 0.4934
2018-05-18 2018-03-31 13F MICROSOFT COM 594918104 1,078,349 -351,155 -24.56 98,421 -19.51 0.4055
2018-02-01 2017-12-31 13F MICROSOFT COM 594918104 1,429,504 26,275 1.87 122,280 16.98 0.5533
2017-11-13 2017-09-30 13F MICROSOFT COM 594918104 1,403,229 65,691 4.91 104,527 13.37 0.5006
2017-08-10 2017-06-30 13F MICROSOFT COM 594918104 1,337,538 -1,007,288 -42.96 92,196 -40.30 0.3923
2017-05-08 2017-03-31 13F MICROSOFT COM 594918104 2,344,826 -232,719 -9.03 154,430 -3.58 0.4975
2017-05-08 2016-12-31 13F/A-1 MICROSOFT COM 594918104 2,577,545 1,937,264 302.56 160,169 334.30 0.5961
2017-01-09 2016-12-31 13F MICROSOFT COM 594918104 778,947 138,666 48,404 0.1997
2017-05-08 2016-09-30 13F/A-1 MICROSOFT COM 594918104 640,281 8,215 1.30 36,880 14.03 0.1499
2016-11-03 2016-09-30 13F MICROSOFT COM 594918104 640,314 8,248 36,882 0.1582
2016-07-21 2016-06-30 13F MICROSOFT COM 594918104 632,066 -15,086 -2.33 32,343 -9.51 0.1423
2016-05-04 2016-03-31 13F MICROSOFT COM 594918104 647,152 54,728 9.24 35,742 8.74 0.1660
2016-01-14 2015-12-31 13F MICROSOFT COM 594918104 592,424 177,128 42.65 32,868 78.82 0.1666
2015-10-26 2015-09-30 13F/A-1 MICROSOFT COM 594918104 415,296 -14,154 -3.30 18,381 -3.05 0.0911
2015-10-22 2015-09-30 13F MICROSOFT COM 594918104 415,296 -14,154 18,381 0.0923
2015-07-22 2015-06-30 13F MICROSOFT COM 594918104 429,450 -9,826 -2.24 18,960 6.16 0.0822
2015-04-23 2015-03-31 13F MICROSOFT COM 594918104 439,276 439,276 0.00 17,859 0.0730
2015-02-04 2014-12-31 13F MICROSOFT COM 594918104 0 -500,607 -100.00 0 -100.00
2014-10-22 2014-09-30 13F MICROSOFT COM 594918104 500,607 -25,299 -4.81 23,208 5.83 0.0832
2014-08-08 2014-06-30 13F MICROSOFT COM 594918104 525,906 104,980 24.94 21,930 27.10 0.0763
2014-05-13 2014-03-31 13F MICROSOFT COM 594918104 420,926 89,753 27.10 17,254 39.27 0.0659
2014-02-07 2013-12-31 13F MICROSOFT COM 594918104 331,173 20,090 6.46 12,389 19.67 0.0514
2013-11-05 2013-09-30 13F MICROSOFT COM 594918104 311,083 -19,907 -6.01 10,353 -9.45 0.0428
2013-08-07 2013-06-30 13F MICROSOFT COM 594918104 330,990 330,990 11,434 0.0513
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
(%)
2025-08-14 2025-06-30 13F MICROSOFT COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-14 2025-03-31 13F MICROSOFT COM Call 2,300 863 n/a n/a n/a
2020-05-15 2020-03-31 13F MICROSOFT COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-13 2019-12-31 13F MICROSOFT COM Call 50,000 -33.33 7,885 -24.38 n/a n/a n/a
2019-11-13 2019-09-30 13F MICROSOFT COM Call 75,000 -96.64 10,427 -96.52 n/a n/a n/a
2019-08-08 2019-06-30 13F MICROSOFT COM Call 2,235,000 347.00 299,401 407.72 n/a n/a n/a
2019-05-09 2019-03-31 13F MICROSOFT COM Call 500,000 117.39 58,970 152.43 n/a n/a n/a
2019-02-13 2018-12-31 13F MICROSOFT COM Call 230,000 23,361 n/a n/a n/a
2018-05-18 2018-03-31 13F MICROSOFT COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-01 2017-12-31 13F MICROSOFT COM Call 430,000 36,782 n/a n/a n/a
2017-08-10 2017-06-30 13F MICROSOFT COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-05-08 2017-03-31 13F MICROSOFT COM Call 200,000 13,172 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
(%)
2026-02-10 2025-12-31 13F MICROSOFT COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-06 2025-09-30 13F MICROSOFT COM Put 1,100 570 n/a n/a n/a
2023-05-12 2023-03-31 13F MICROSOFT COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-13 2022-12-31 13F MICROSOFT COM Put 30,000 7 n/a n/a n/a
2018-08-08 2018-06-30 13F MICROSOFT COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-05-18 2018-03-31 13F MICROSOFT COM Put 250,000 22,818 n/a n/a n/a
2018-02-01 2017-12-31 13F MICROSOFT COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-13 2017-09-30 13F MICROSOFT COM Put 9,700 0.00 723 8.07 n/a n/a n/a
2017-08-10 2017-06-30 13F MICROSOFT COM Put 9,700 -1.02 669 3.72 n/a n/a n/a
2017-05-08 2017-03-31 13F MICROSOFT COM Put 9,800 -2.00 645 3.86 n/a n/a n/a
2017-05-08 2016-12-31 13F/A MICROSOFT COM Put 10,000 -51.92 621 -48.16 n/a n/a n/a
2017-01-09 2016-12-31 13F MICROSOFT COM Put 10,000 621 n/a n/a n/a
2017-05-08 2016-09-30 13F/A MICROSOFT COM Put 20,800 89.09 1,198 112.79 n/a n/a n/a
2016-11-03 2016-09-30 13F MICROSOFT COM Put 20,800 11,981 n/a n/a n/a
2016-07-21 2016-06-30 13F MICROSOFT COM Put 11,000 563 n/a n/a n/a
2016-01-14 2015-12-31 13F MICROSOFT COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-10-26 2015-09-30 13F/A MICROSOFT COM Put 11,900 -0.83 527 -0.57 n/a n/a n/a
2015-10-22 2015-09-30 13F MICROSOFT COM Put 11,900 527 n/a n/a n/a
2015-07-22 2015-06-30 13F MICROSOFT COM Put 12,000 530 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.