Microsoft Corporation
MX ˙ BMV ˙ US5949181045
SecurityMX:MSFT / Microsoft Corporation
InstitutionChelsea Counsel Co
Latest Disclosed Ownership21,048 shares
Latest Disclosed Value $ 10,178,993
Chelsea Counsel Co ownership in MSFT / Microsoft Corporation

On April 23, 2026 - Chelsea Counsel Co filed a 13F-HR form disclosing ownership of 21,048 shares of Microsoft Corporation (MX:MSFT) valued at $10,178,993 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 24, 2026 disclosing 21,048 shares of Microsoft Corporation. This represents a change in shares of 0.00% 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)
2026-04-23 2026-03-31 13F MICROSOFT COM 594918104 21,048 0 0.00 10,179 0.00 4.3717
2026-02-24 2025-12-31 13F MICROSOFT COM 594918104 21,048 -95 -0.45 10,179 -7.05 4.3716
2025-11-25 2025-09-30 13F MICROSOFT COM 594918104 21,143 -927 -4.20 10,951 -0.25 4.8628
2025-07-18 2025-06-30 13F MICROSOFT COM 594918104 22,070 -1,810 -7.58 10,978 22.46 5.4433
2025-05-22 2025-03-31 13F MICROSOFT COM 594918104 23,880 -670 -2.73 8,964 -13.37 4.8728
2025-02-27 2024-12-31 13F MICROSOFT COM 594918104 24,550 1,228 5.27 10,348 3.11 5.3407
2024-11-21 2024-09-30 13F MICROSOFT COM 594918104 23,322 -1,285 -5.22 10,035 -8.75 4.9453
2024-11-21 2024-06-30 13F MICROSOFT COM 594918104 24,607 0 0.00 10,998 6.23 5.4887
2024-06-17 2024-03-31 13F MICROSOFT COM 594918104 24,607 -731 -2.88 10,352 8.66 5.8696
2024-02-21 2023-12-31 13F MICROSOFT COM 594918104 25,338 -1,385 -5.18 9,528 12.92 5.0541
2023-11-22 2023-09-30 13F MICROSOFT COM 594918104 26,723 608 2.33 8,438 -5.13 4.3411
2023-11-22 2023-06-30 13F MICROSOFT COM 594918104 26,115 300 1.16 8,893 19.50 4.3780
2023-05-19 2023-03-31 13F MICROSOFT COM 594918104 25,815 -645 -2.44 7,442 17.29 3.6143
2023-02-23 2022-12-31 13F MICROSOFT COM 594918104 26,460 -2,834 -9.67 6,346 -7.01 3.1691
2022-10-31 2022-09-30 13F MICROSOFT COMMON 594918104 29,294 -8,886 -23.27 6,823 -30.42 4.2072
2022-08-01 2022-06-30 13F MICROSOFT COMMON 594918104 38,180 -1,722 -4.32 9,806 -20.29 5.0377
2022-05-24 2022-03-31 13F MICROSOFT COMMON 594918104 39,902 -402 -1.00 12,302 -9.24 5.4199
2022-05-23 2021-12-31 13F MICROSOFT COMMON 594918104 40,304 -492 -1.21 13,555 17.86 5.8687
2022-02-10 2021-09-30 13F MICROSOFT COMMON 594918104 40,796 730 1.82 11,501 5.96 5.2300
2022-02-10 2021-06-30 13F MICROSOFT COMMON 594918104 40,066 117 0.29 10,854 15.24 5.0030
2022-02-10 2021-03-31 13F MICROSOFT COMMON 594918104 39,949 -245 -0.61 9,419 5.36 4.6689
2022-03-08 2020-12-31 13F MICROSOFT COMMON 594918104 40,194 1,258 3.23 8,940 9.17 4.6010
2022-05-06 2020-09-30 13F MICROSOFT COMMON 594918104 38,936 -2,446 -5.91 8,189 -2.76 3.2884
2022-05-06 2020-09-30 13F MICROSOFT COMMON 594918104 38,936 8,189
2022-05-06 2020-06-30 13F MICROSOFT COMMON 594918104 41,382 3,141 8.21 8,421 39.63 3.2241
2022-05-06 2020-06-30 13F MICROSOFT COMMON 594918104 41,382 8,421
2020-06-12 2020-03-31 13F MICROSOFT COMMON 594918104 38,241 3,793 11.01 6,031 11.01 4.7287
2020-03-23 2019-12-31 13F MICROSOFT COMMON 594918104 34,448 -933 -2.64 5,433 10.45 3.3055
2020-03-27 2019-09-30 13F/A-1 MICROSOFT COMMON 594918104 35,381 -2,524 -6.66 4,919 -3.13 2.9610
2020-03-23 2019-09-30 13F MICROSOFT COMMON 594918104 30,954 -6,951 0
2019-12-09 2019-06-30 13F MICROSOFT COMMON 594918104 37,905 -98 -0.26 5,078 13.30 2.7178
2019-12-09 2019-03-31 13F MICROSOFT COMMON 594918104 38,003 151 0.40 4,482 16.60 2.4151
2019-12-09 2018-12-31 13F MICROSOFT COMMON 594918104 37,852 287 0.76 3,844 -10.52 2.3333
2019-12-09 2018-09-30 13F MICROSOFT COMMON 594918104 37,565 6,943 22.67 4,296 42.25 2.2392
2018-10-03 2018-06-30 13F MICROSOFT COMMON 594918104 30,622 3,011 10.91 3,020 19.84 1.7976
2018-10-03 2018-03-31 13F MICROSOFT COMMON 594918104 27,611 -924 -3.24 2,520 3.24 1.6205
2018-01-12 2017-12-31 13F MICROSOFT COMMON 594918104 28,535 2,218 8.43 2,441 24.54 1.3035
2018-01-12 2017-09-30 13F MICROSOFT COMMON 594918104 26,317 6,040 29.79 1,960 40.20 0.9816
2018-01-22 2017-06-30 13F MICROSOFT COMMON 594918104 20,277 12,270 153.24 1,398 165.28 0.7270
2017-04-20 2017-03-31 13F MICROSOFT COMMON 594918104 8,007 0 0.00 527 5.82 0.2708
2017-04-20 2016-12-31 13F MICROSOFT COMMON 594918104 8,007 -45 -0.56 498 7.33 0.2617
2016-11-01 2016-09-30 13F MICROSOFT COMMON 594918104 8,052 45 0.56 464 13.17 0.2374
2016-11-01 2016-06-30 13F MICROSOFT COMMON 594918104 8,007 0 0.00 410 -7.24 0.1853
2016-06-01 2016-03-31 13F MICROSOFT COMMON 594918104 8,007 -145 -1.78 442 -2.21 0.1423
2016-04-07 2015-12-31 13F MICROSOFT COMMON 594918104 8,152 -3,283 -28.71 452 -10.67 0.1364
2015-12-22 2015-09-30 13F MICROSOFT COMMON 594918104 11,435 134 1.19 506 1.40 0.1205
2015-08-31 2015-06-30 13F/A-1 MICROSOFT COMMON 594918104 14,770 269 616 0.1180
2015-09-10 2015-06-30 13F/A-2 MICROSOFT COMMON 594918104 11,301 -3,200 -22.07 499 -15.42 0.1117
2015-08-28 2015-06-30 13F MICROSOFT COMMON 594918104 14,770 616
2015-05-29 2015-03-31 13F MICROSOFT COMMON 594918104 14,501 0 0.00 590 -12.46 0.1270
2015-05-29 2014-12-31 13F MICROSOFT COMMON 594918104 14,501 2,343 19.27 674 19.50 0.1387
2014-12-16 2014-09-30 13F MICROSOFT COMMON 594918104 12,158 -2,612 -17.68 564 -8.44 0.1125
2014-09-04 2014-06-30 13F MICROSOFT COMMON 594918104 14,770 3,000 25.49 616 27.80 0.1203
2014-07-08 2014-03-31 13F MICROSOFT COMMON 594918104 11,770 -300 -2.49 482 6.64 0.0979
2014-03-24 2013-12-31 13F MICROSOFT COMMON 594918104 12,070 540 4.68 452 17.71 0.1070
2013-11-14 2013-09-30 13F MICROSOFT COMMON 594918104 11,530 -980 -7.83 384 -11.11 0.0796
2013-11-14 2013-06-30 13F MICROSOFT COMMON 594918104 12,510 12,510 432 0.1134
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.