Microsoft Corporation
MX ˙ BMV ˙ US5949181045
SecurityMX:MSFT / Microsoft Corporation
InstitutionAdvisor OS, LLC
Latest Disclosed Ownership42,970 shares
Latest Disclosed Value $ 15,906,343
Advisor OS, LLC ownership in MSFT / Microsoft Corporation

On May 7, 2026 - Advisor OS, LLC filed a 13F-HR form disclosing ownership of 42,970 shares of Microsoft Corporation (MX:MSFT) valued at $15,906,343 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 43,179 shares of Microsoft Corporation. This represents a change in shares of -0.48% during the quarter.

Advisor OS, LLC has a history of taking positions in derivatives of the underlying security (MSFT) in the form of stock options. The firm currently holds call 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.

MX:MSFT / 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)
2026-05-07 2026-03-31 13F MICROSOFT COM 594918104 42,970 -209 -0.48 15,906 -23.83 0.4472
2026-02-04 2025-12-31 13F MICROSOFT COM 594918104 43,179 1,086 2.58 20,882 -4.22 0.6166
2025-11-12 2025-09-30 13F MICROSOFT COM 594918104 42,093 2,695 6.84 21,802 11.25 1.8813
2025-08-14 2025-06-30 13F MICROSOFT COM 594918104 39,398 2,967 8.14 19,597 43.31 1.9285
2025-05-06 2025-03-31 13F MICROSOFT COM 594918104 36,431 -2,439 -6.27 13,676 -16.53 1.5562
2025-02-05 2024-12-31 13F MICROSOFT COM 594918104 38,870 88 0.23 16,384 -1.82 1.8974
2024-11-04 2024-09-30 13F MICROSOFT COM 594918104 38,782 980 2.59 16,688 -1.23 1.6613
2024-08-05 2024-06-30 13F MICROSOFT COM 594918104 37,802 2,549 7.23 16,896 13.92 1.8503
2024-05-09 2024-03-31 13F MICROSOFT COM 594918104 35,253 2,351 7.15 14,831 19.88 1.7042
2024-02-08 2023-12-31 13F MICROSOFT COM 594918104 32,902 696 2.16 12,372 21.66 1.6102
2023-11-03 2023-09-30 13F MICROSOFT COM 594918104 32,206 2,032 6.73 10,169 -1.03 1.5242
2023-08-08 2023-06-30 13F MICROSOFT COM 594918104 30,174 7,677 34.12 10,275 58.44 1.6812
2023-04-25 2023-03-31 13F MICROSOFT COM 594918104 22,497 1,907 9.26 6,486 31.36 1.5569
2023-02-01 2022-12-31 13F MICROSOFT COM 594918104 20,590 1,258 6.51 4,938 9.64 1.3113
2022-11-04 2022-09-30 13F MICROSOFT COM 594918104 19,332 -4,171 -17.75 4,503 -25.39 1.3575
2022-08-02 2022-06-30 13F MICROSOFT COM 594918104 23,503 1,650 7.55 6,035 -10.43 1.7607
2022-05-11 2022-03-31 13F MICROSOFT COM 594918104 21,853 -9,034 -29.25 6,738 -35.14 1.9511
2022-02-04 2021-12-31 13F MICROSOFT COM 594918104 30,887 2,851 10.17 10,388 31.41 2.1193
2021-11-15 2021-09-30 13F MICROSOFT COM 594918104 28,036 -85 -0.30 7,905 3.78 1.7186
2021-08-10 2021-06-30 13F MICROSOFT COM 594918104 28,121 1,733 6.57 7,617 22.46 1.5807
2021-05-13 2021-03-31 13F MICROSOFT COM 594918104 26,388 2,057 8.45 6,220 14.93 1.4101
2021-02-10 2020-12-31 13F MICROSOFT COM 594918104 24,331 13,142 117.45 5,412 129.91 1.4524
2020-11-12 2020-09-30 13F MICROSOFT COM 594918104 11,189 -1,435 -11.37 2,354 -8.37 0.9880
2020-08-28 2020-06-30 13F MICROSOFT COM 594918104 12,624 12,624 2,569 1.5318
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
(%)
2026-05-07 2026-03-31 13F MICROSOFT COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-04 2025-12-31 13F MICROSOFT COM Call 300 0.00 1 n/a n/a n/a
2025-11-12 2025-09-30 13F MICROSOFT COM Call 300 0.00 1 -100.00 n/a n/a n/a
2025-08-14 2025-06-30 13F MICROSOFT COM Call 300 2 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.