Microsoft Corporation
BG ˙ BUL ˙ US5949181045
SecurityBG:MSF / Microsoft Corporation
InstitutionCallahan Advisors, LLC
Latest Disclosed Ownership126,164 shares
Latest Disclosed Value $ 46,702,179
Callahan Advisors, LLC reports 1.17% increase in ownership of MSF / Microsoft Corporation

On May 12, 2026 - Callahan Advisors, LLC filed a 13F-HR form disclosing ownership of 126,164 shares of Microsoft Corporation (BG:MSF) valued at $46,702,179 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 124,699 shares of Microsoft Corporation. This represents a change in shares of 1.17% 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)
2026-05-12 2026-03-31 13F Microsoft COM 594918104 126,164 1,465 1.17 46,702 -22.56 3.8977
2026-02-06 2025-12-31 13F Microsoft COM 594918104 124,699 -4 -0.00 60,307 -6.63 4.9567
2025-10-31 2025-09-30 13F Microsoft COM 594918104 124,703 75 0.06 64,590 4.19 5.4857
2025-07-28 2025-06-30 13F Microsoft COM 594918104 124,628 -74 -0.06 61,991 32.43 5.5711
2025-05-01 2025-03-31 13F Microsoft COM 594918104 124,702 1,688 1.37 46,812 -9.72 4.4612
2025-01-31 2024-12-31 13F Microsoft COM 594918104 123,014 6,953 5.99 51,850 3.82 4.8799
2024-10-30 2024-09-30 13F Microsoft COM 594918104 116,061 -323 -0.28 49,941 -3.99 4.8657
2024-07-29 2024-06-30 13F Microsoft COM 594918104 116,384 220 0.19 52,018 6.44 5.4086
2024-04-24 2024-03-31 13F Microsoft COM 594918104 116,164 -748 -0.64 48,873 11.17 5.1257
2024-01-24 2023-12-31 13F Microsoft COM 594918104 116,912 -497 -0.42 43,963 18.59 5.1003
2023-10-23 2023-09-30 13F Microsoft COM 594918104 117,409 -977 -0.83 37,072 -8.05 4.6564
2023-07-31 2023-06-30 13F Microsoft COM 594918104 118,386 -47 -0.04 40,315 18.07 4.8991
2023-04-28 2023-03-31 13F Microsoft COM 594918104 118,433 -618 -0.52 34,144 19.59 4.4104
2023-02-03 2022-12-31 13F Microsoft COM 594918104 119,051 1,900 1.62 28,551 4.64 3.9068
2022-11-14 2022-09-30 13F/A-1 Microsoft COM 594918104 117,151 782 0.67 27,284 -8.71 3.9180
2022-10-27 2022-09-30 13F Microsoft COM 594918104 117,151 782 27,284 3.9180
2022-07-29 2022-06-30 13F Microsoft COM 594918104 116,369 570 0.49 29,887 -16.29 3.9781
2022-04-27 2022-03-31 13F Microsoft COM 594918104 115,799 673 0.58 35,702 -7.79 4.0739
2022-02-08 2021-12-31 13F Microsoft COM 594918104 115,126 -634 -0.55 38,719 18.64 4.3438
2021-11-03 2021-09-30 13F Microsoft COM 594918104 115,760 -1,708 -1.45 32,635 2.55 4.1125
2021-08-11 2021-06-30 13F Microsoft COM 594918104 117,468 0 0.00 31,822 14.90 4.0393
2021-04-21 2021-03-31 13F Microsoft COM 594918104 117,468 -2,531 -2.11 27,695 3.77 3.7503
2021-01-20 2020-12-31 13F Microsoft COM 594918104 119,999 -3,765 -3.04 26,690 2.53 3.9057
2020-10-26 2020-09-30 13F Microsoft COM 594918104 123,764 -7,446 -5.67 26,031 -2.52 4.2564
2020-07-17 2020-06-30 13F Microsoft COM 594918104 131,210 -375 -0.28 26,703 28.68 4.7341
2020-04-06 2020-03-31 13F Microsoft COM 594918104 131,585 -8,010 -5.74 20,752 -5.73 4.3566
2020-01-21 2019-12-31 13F Microsoft COM 594918104 139,595 -4,226 -2.94 22,014 10.10 3.5295
2019-10-21 2019-09-30 13F Microsoft COM 594918104 143,821 -2,993 -2.04 19,995 1.67 3.4925
2019-07-17 2019-06-30 13F Microsoft COM 594918104 146,814 -6,062 -3.97 19,667 9.08 3.5294
2019-04-22 2019-03-31 13F Microsoft COM 594918104 152,876 -421 -0.27 18,030 15.80 3.3562
2019-01-24 2018-12-31 13F Microsoft COM 594918104 153,297 -4,164 -2.64 15,570 -13.54 3.3242
2018-10-15 2018-09-30 13F Microsoft COM 594918104 157,461 -5,186 -3.19 18,009 12.28 3.3413
2018-07-19 2018-06-30 13F Microsoft COM 594918104 162,647 -5,403 -3.22 16,039 4.57 3.1613
2018-04-30 2018-03-31 13F Microsoft COM 594918104 168,050 -3,303 -1.93 15,338 4.64 3.1445
2018-01-30 2017-12-31 13F Microsoft COM 594918104 171,353 -6,757 -3.79 14,658 10.48 2.9099
2017-10-26 2017-09-30 13F Microsoft COM 594918104 178,110 1,323 0.75 13,267 8.87 2.7896
2017-07-31 2017-06-30 13F Microsoft COM 594918104 176,787 1,436 0.82 12,186 5.52 2.6522
2017-04-27 2017-03-31 13F Microsoft COM 594918104 175,351 -2,218 -1.25 11,549 4.67 2.5999
2017-01-31 2016-12-31 13F Microsoft COM 594918104 177,569 -2,105 -1.17 11,034 6.62 2.6598
2016-10-14 2016-09-30 13F Microsoft COM 594918104 179,674 10,201 6.02 10,349 19.34 2.5897
2016-07-25 2016-06-30 13F Microsoft COM 594918104 169,473 2,972 1.78 8,672 -5.70 2.2776
2016-04-29 2016-03-31 13F Microsoft COM 594918104 166,501 116 0.07 9,196 -0.38 2.5205
2016-02-05 2015-12-31 13F Microsoft COM 594918104 166,385 3,885 2.39 9,231 28.35 2.6326
2015-10-21 2015-09-30 13F Microsoft COM 594918104 162,500 7,390 4.76 7,192 5.02 2.2084
2015-07-28 2015-06-30 13F Microsoft COM 594918104 155,110 6,911 4.66 6,848 13.66 1.9712
2015-04-20 2015-03-31 13F Microsoft COM 594918104 148,199 148,199 0.00 6,025 1.7559
2015-01-27 2014-12-31 13F Microsoft COM 594918104 0 -144,299 -100.00 0 -100.00
2014-10-21 2014-09-30 13F Microsoft COM 594918104 144,299 3,575 2.54 6,690 14.01 2.0727
2014-07-25 2014-06-30 13F Microsoft COM 594918104 140,724 7,599 5.71 5,868 7.53 1.8646
2014-05-05 2014-03-31 13F Microsoft COM 594918104 133,125 3,612 2.79 5,457 12.63 1.8579
2014-01-22 2013-12-31 13F Microsoft COM 594918104 129,513 2,993 2.37 4,845 15.06 1.6895
2013-10-31 2013-09-30 13F Microsoft COM 594918104 126,520 9,417 8.04 4,211 4.10 1.6060
2013-07-30 2013-06-30 13F Microsoft COM 594918104 117,103 117,103 4,045 1.6543
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.