微軟公司
MX ˙ BMV ˙ US5949181045
SecurityMX:MSFT / Microsoft Corporation
InstitutionAltarock Partners Llc
Latest Disclosed Ownership1,867,537 shares
Latest Disclosed Value $ 691,306,171
Altarock Partners Llc reports 10.32% decrease in ownership of MSFT / Microsoft Corporation

On May 15, 2026 - Altarock Partners Llc filed a 13F-HR form disclosing ownership of 1,867,537 shares of Microsoft Corporation (MX:MSFT) valued at $691,306,171 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,082,357 shares of Microsoft Corporation. This represents a change in shares of -10.32% 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)
2026-05-15 2026-03-31 13F MICROSOFT COMM 594918104 1,867,537 -214,820 -10.32 691,306 -31.35 16.7535
2026-02-13 2025-12-31 13F MICROSOFT COMM 594918104 2,082,357 -486,910 -18.95 1,007,069 -24.32 19.7462
2025-11-14 2025-09-30 13F MICROSOFT COMM 594918104 2,569,267 -9,382 -0.36 1,330,752 3.75 24.3320
2025-08-14 2025-06-30 13F MICROSOFT COMM 594918104 2,578,649 0 0.00 1,282,646 32.50 23.4172
2025-05-14 2025-03-31 13F MICROSOFT COMM 594918104 2,578,649 687,008 36.32 967,999 21.41 19.4638
2025-02-14 2024-12-31 13F MICROSOFT COMM 594918104 1,891,641 -43,175 -2.23 797,327 -4.23 16.1284
2024-11-13 2024-09-30 13F MICROSOFT COMM 594918104 1,934,816 0 0.00 832,551 -3.73 16.3976
2024-08-14 2024-06-30 13F MICROSOFT COMM 594918104 1,934,816 180,630 10.30 864,766 17.17 17.7989
2024-05-21 2024-03-31 13F/A-1 MICROSOFT COMM 594918104 1,754,186 -236,528 -11.88 738,021 -1.41 15.8595
2024-05-15 2024-03-31 13F MICROSOFT COMM 594918104 1,754,186 -236,528 738,021 15.8595
2024-02-15 2023-12-31 13F MICROSOFT COMM 594918104 1,990,714 -220,798 -9.98 748,588 7.20 16.6974
2023-11-14 2023-09-30 13F MICROSOFT COMM 594918104 2,211,512 -60,529 -2.66 698,285 -9.75 17.4892
2023-08-14 2023-06-30 13F MICROSOFT COMM 594918104 2,272,041 -59,888 -2.57 773,721 15.09 18.5813
2023-05-16 2023-03-31 13F MICROSOFT COMM 594918104 2,331,929 -228,200 -8.91 672,295 9.50 18.4155
2023-02-13 2022-12-31 13F MICROSOFT COMM 594918104 2,560,129 -258,380 -9.17 613,970 -6.47 19.2960
2022-11-14 2022-09-30 13F MICROSOFT COMM 594918104 2,818,509 86,500 3.17 656,431 -6.45 21.4900
2022-08-12 2022-06-30 13F MICROSOFT COMM 594918104 2,732,009 96,700 3.67 701,662 -13.64 21.6529
2022-05-13 2022-03-31 13F MICROSOFT COMM 594918104 2,635,309 915,133 53.20 812,492 40.44 20.7161
2022-02-14 2021-12-31 13F MICROSOFT COMM 594918104 1,720,176 0 0.00 578,530 19.30 15.2482
2021-11-15 2021-09-30 13F MICROSOFT COMM 594918104 1,720,176 896,843 108.93 484,952 117.43 13.0816
2021-08-13 2021-06-30 13F MICROSOFT COMM 594918104 823,333 823,333 223,041 6.1738
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.