Microsoft Corporation
CH ˙ SWX ˙ US5949181045
SecurityCH:MSFT / Microsoft Corporation
InstitutionOak Associates Ltd /oh/
Latest Disclosed Ownership137,292 shares
Latest Disclosed Value $ 50,821,380
Oak Associates Ltd /oh/ reports 7.90% decrease in ownership of MSFT / Microsoft Corporation

On May 14, 2026 - Oak Associates Ltd /oh/ filed a 13F-HR form disclosing ownership of 137,292 shares of Microsoft Corporation (CH:MSFT) valued at $50,821,380 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 149,068 shares of Microsoft Corporation. This represents a change in shares of -7.90% 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 Microsoft COM 594918104 137,292 -11,776 -7.90 50,821 -29.51 3.4196
2026-02-12 2025-12-31 13F Microsoft COM 594918104 149,068 5,727 4.00 72,092 97,321.62 4.3332
2025-11-12 2025-09-30 13F Microsoft COM 594918104 143,341 -570 -0.40 74 -99.90 4.5323
2025-08-12 2025-06-30 13F Microsoft COM 594918104 143,911 2,333 1.65 71,583 34.69 4.6754
2025-05-14 2025-03-31 13F Microsoft COM 594918104 141,578 2,682 1.93 53,147 -9.22 3.9862
2025-02-13 2024-12-31 13F Microsoft COM 594918104 138,896 22,034 18.85 58,545 16.42 4.0378
2024-11-12 2024-09-30 13F Microsoft COM 594918104 116,862 9,419 8.77 50,286 4.71 3.3819
2024-08-08 2024-06-30 13F Microsoft COM 594918104 107,443 -203 -0.19 48,022 6.03 3.1850
2024-05-10 2024-03-31 13F Microsoft COM 594918104 107,646 160 0.15 45,289 12.05 3.1388
2024-02-14 2023-12-31 13F Microsoft COM 594918104 107,486 -389 -0.36 40,419 18.67 3.0566
2023-11-13 2023-09-30 13F Microsoft COM 594918104 107,875 0 0.00 34,062 -7.28 2.8344
2023-08-11 2023-06-30 13F Microsoft COM 594918104 107,875 92 0.09 36,736 18.22 2.9376
2023-05-11 2023-03-31 13F Microsoft COM 594918104 107,783 -12,000 -10.02 31,074 8.17 2.5552
2023-02-09 2022-12-31 13F Microsoft COM 594918104 119,783 -500 -0.42 28,726 2.54 2.4099
2022-11-09 2022-09-30 13F Microsoft COM 594918104 120,283 694 0.58 28,014 -8.79 2.3770
2022-08-12 2022-06-30 13F Microsoft COM 594918104 119,589 -20 -0.02 30,714 -16.71 2.4012
2022-05-12 2022-03-31 13F Microsoft COM 594918104 119,609 -13,800 -10.34 36,877 -17.81 2.2505
2022-02-10 2021-12-31 13F Microsoft COM 594918104 133,409 -10,140 -7.06 44,868 10.87 2.3896
2021-11-12 2021-09-30 13F Microsoft COM 594918104 143,549 0 0.00 40,469 4.07 2.3039
2021-08-09 2021-06-30 13F Microsoft COM 594918104 143,549 -29,430 -17.01 38,887 -4.65 2.2012
2021-05-13 2021-03-31 13F Microsoft COM 594918104 172,979 5 0.00 40,783 6.00 2.4123
2021-02-12 2020-12-31 13F Microsoft COM 594918104 172,974 625 0.36 38,473 6.13 2.3254
2020-11-13 2020-09-30 13F Microsoft COM 594918104 172,349 -25,000 -12.67 36,250 -9.74 2.4219
2020-08-11 2020-06-30 13F Microsoft COM 594918104 197,349 -92,190 -31.84 40,162 -12.05 2.6965
2020-05-15 2020-03-31 13F Microsoft COM 594918104 289,539 -15,746 -5.16 45,663 -5.15 3.7453
2020-02-13 2019-12-31 13F Microsoft COM 594918104 305,285 -5,200 -1.67 48,143 11.53 2.8357
2019-11-12 2019-09-30 13F Microsoft COM 594918104 310,485 0 0.00 43,167 3.78 2.6625
2019-08-09 2019-06-30 13F Microsoft COM 594918104 310,485 0 0.00 41,593 13.58 2.5928
2019-05-09 2019-03-31 13F Microsoft COM 594918104 310,485 0 0.00 36,619 16.12 2.2373
2019-02-07 2018-12-31 13F Microsoft COM 594918104 310,485 0 0.00 31,536 -11.19 2.2229
2018-11-13 2018-09-30 13F Microsoft COM 594918104 310,485 -450 -0.14 35,510 15.81 2.1718
2018-08-14 2018-06-30 13F Microsoft COM 594918104 310,935 0 0.00 30,661 8.04 2.0523
2018-05-14 2018-03-31 13F Microsoft COM 594918104 310,935 -4,199 -1.33 28,379 5.28 1.9793
2018-02-08 2017-12-31 13F Microsoft COM 594918104 315,134 1 0.00 26,957 14.84 1.9113
2017-11-07 2017-09-30 13F Microsoft COM 594918104 315,133 1 0.00 23,474 8.07 1.7294
2017-08-18 2017-06-30 13F Microsoft COM 594918104 315,132 14,201 4.72 21,722 9.60 1.6361
2017-05-16 2017-03-31 13F Microsoft COM 594918104 300,931 97,801 48.15 19,819 57.02 1.5832
2017-02-08 2016-12-31 13F Microsoft COM 594918104 203,130 47,801 30.77 12,622 35.62 1.2454
2016-11-09 2016-09-30 13F MICROSOFT COM 594918104 155,329 -22,099 -12.46 9,307 2.51 0.9590
2016-08-09 2016-06-30 13F MICROSOFT COM 594918104 177,428 -113,748 -39.07 9,079 -43.55 1.0902
2016-05-19 2016-03-31 13F MICROSOFT COM 594918104 291,176 -248 -0.09 16,082 -0.53 1.9689
2016-02-08 2015-12-31 13F MICROSOFT COM 594918104 291,424 19,572 7.20 16,168 34.38 1.9262
2015-11-16 2015-09-30 13F MICROSOFT COM 594918104 271,852 -39,423 -12.67 12,032 -12.45 1.5949
2015-08-11 2015-06-30 13F MICROSOFT COM 594918104 311,275 270 0.09 13,743 8.69 1.6728
2015-05-11 2015-03-31 13F MICROSOFT COM 594918104 311,005 18,000 6.14 12,644 -7.10 1.5208
2015-02-09 2014-12-31 13F MICROSOFT COM 594918104 293,005 -100 -0.03 13,610 0.16 1.6281
2014-12-16 2014-09-30 13F MICROSOFT COM 594918104 293,105 2,000 0.69 13,588 11.94 1.6746
2014-08-26 2014-06-30 13F MICROSOFT COM 594918104 291,105 2,000 0.69 12,139 2.44 1.4830
2014-06-03 2014-03-31 13F MICROSOFT COM 594918104 289,105 10,900 3.92 11,850 13.85 1.4658
2014-03-04 2013-12-31 13F MICROSOFT COM 594918104 278,205 26,410 10.49 10,408 19.66 1.1258
2013-08-13 2013-06-30 13F MICROSOFT COM 594918104 251,795 251,795 8,698 1.0358
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.