Microsoft Corporation
CH ˙ SWX ˙ US5949181045
SecurityCH:MSFT / Microsoft Corporation
InstitutionSt. Louis Trust Co
Latest Disclosed Ownership720 shares
Latest Disclosed Value $ 266,522
St. Louis Trust Co reports 53.73% decrease in ownership of MSFT / Microsoft Corporation

On May 14, 2026 - St. Louis Trust Co filed a 13F-HR form disclosing ownership of 720 shares of Microsoft Corporation (CH:MSFT) valued at $266,522 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 1,556 shares of Microsoft Corporation. This represents a change in shares of -53.73% 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.

Upgrade to unlock premium data and export to Excel .

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 720 -836 -53.73 267 -64.63 0.0234
2026-02-09 2025-12-31 13F MICROSOFT COM 594918104 1,556 0 0.00 753 -6.58 0.0630
2025-11-07 2025-09-30 13F MICROSOFT COM 594918104 1,556 -138 -8.15 806 -4.39 0.1005
2025-07-25 2025-06-30 13F MICROSOFT COM 594918104 1,694 0 0.00 843 32.60 0.1123
2025-05-05 2025-03-31 13F MICROSOFT COM 594918104 1,694 295 21.09 636 7.81 0.0921
2025-02-07 2024-12-31 13F MICROSOFT COM 594918104 1,399 -204 -12.73 590 -14.51 0.0843
2024-11-07 2024-09-30 13F MICROSOFT COM 594918104 1,603 -437 -21.42 690 -24.37 0.0971
2024-07-30 2024-06-30 13F MICROSOFT COM 594918104 2,040 0 0.00 912 6.18 0.1394
2024-05-02 2024-03-31 13F MICROSOFT COM 594918104 2,040 -35 -1.69 858 10.00 0.1341
2024-02-05 2023-12-31 13F MICROSOFT COM 594918104 2,075 75 3.75 780 23.61 0.1343
2023-11-03 2023-09-30 13F MICROSOFT COM 594918104 2,000 0 0.00 632 -7.34 0.1189
2023-08-03 2023-06-30 13F MICROSOFT COM 594918104 2,000 0 0.00 681 18.23 0.1255
2023-05-04 2023-03-31 13F MICROSOFT COM 594918104 2,000 0 0.00 577 20.25 0.1159
2023-02-06 2022-12-31 13F MICROSOFT COM 594918104 2,000 2,000 480 0.1020
2022-11-01 2022-09-30 13F MICROSOFT COM 594918104 0 -2,000 -100.00 0 -100.00
2022-08-01 2022-06-30 13F MICROSOFT COM 594918104 2,000 0 0.00 514 -16.69 0.1111
2022-05-13 2022-03-31 13F MICROSOFT COM 594918104 2,000 0 0.00 617 -8.32 0.1321
2022-02-07 2021-12-31 13F MICROSOFT COM 594918104 2,000 0 0.00 673 19.33 0.1420
2021-11-12 2021-09-30 13F MICROSOFT COM 594918104 2,000 2,000 564 0.1488
2018-08-07 2018-06-30 13F MICROSOFT COM 594918104 0 -11,475 -100.00 0 -100.00
2018-04-23 2018-03-31 13F MICROSOFT COM 594918104 11,475 0 0.00 1,047 6.62 0.3594
2018-01-25 2017-12-31 13F MICROSOFT COM 594918104 11,475 11,475 982 0.3867
2016-08-05 2016-06-30 13F MICROSOFT COM 594918104 0 -6,340 -100.00 0 -100.00
2016-05-11 2016-03-31 13F MICROSOFT COM 594918104 6,340 6,340 350 0.1908
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.