Microsoft Corporation
BG ˙ BUL ˙ US5949181045
SecurityBG:MSF / Microsoft Corporation
InstitutionAvenir Corp
Latest Disclosed Ownership244,110 shares
Latest Disclosed Value $ 90,362,226
Avenir Corp reports 0.54% decrease in ownership of MSF / Microsoft Corporation

On May 14, 2026 - Avenir Corp filed a 13F-HR form disclosing ownership of 244,110 shares of Microsoft Corporation (BG:MSF) valued at $90,362,226 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 245,425 shares of Microsoft Corporation. This represents a change in shares of -0.54% 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)
2026-05-14 2026-03-31 13F MICROSOFT COM 594918104 244,110 -1,315 -0.54 90,362 -23.87 11.0131
2026-02-13 2025-12-31 13F MICROSOFT COM 594918104 245,425 -6,993 -2.77 118,692 -9.21 12.8782
2025-11-14 2025-09-30 13F MICROSOFT COM 594918104 252,418 -13,169 -4.96 130,740 -1.03 13.6178
2025-08-14 2025-06-30 13F MICROSOFT COM 594918104 265,587 -4,763 -1.76 132,106 30.17 13.5780
2025-05-14 2025-03-31 13F MICROSOFT COM 594918104 270,350 -3,258 -1.19 101,487 -12.00 10.6491
2025-02-13 2024-12-31 13F MICROSOFT COM 594918104 273,608 -16,830 -5.79 115,326 -7.72 11.8063
2024-11-14 2024-09-30 13F MICROSOFT COM 594918104 290,438 -33,942 -10.46 124,975 -13.80 12.6019
2024-08-14 2024-06-30 13F MICROSOFT COM 594918104 324,380 -81,218 -20.02 144,981 -15.04 14.0838
2024-05-16 2024-03-31 13F MICROSOFT COM 594918104 405,598 -28,119 -6.48 170,643 4.63 14.6058
2024-02-14 2023-12-31 13F MICROSOFT COM 594918104 433,717 -28,518 -6.17 163,095 11.75 14.1042
2023-11-14 2023-09-30 13F MICROSOFT COM 594918104 462,235 -5,714 -1.22 145,951 -8.41 13.6610
2023-08-11 2023-06-30 13F MICROSOFT COM 594918104 467,949 -1,752 -0.37 159,355 17.68 13.9889
2023-05-15 2023-03-31 13F MICROSOFT COM 594918104 469,701 -28,266 -5.68 135,415 13.39 12.8091
2023-02-14 2022-12-31 13F MICROSOFT COM 594918104 497,967 -1,479 -0.30 119,422 2.67 11.9702
2022-11-15 2022-09-30 13F MICROSOFT COM 594918104 499,446 -1,858 -0.37 116,321 -9.65 12.3327
2022-08-11 2022-06-30 13F MICROSOFT COM 594918104 501,304 -3,332 -0.66 128,750 -17.25 12.3046
2022-05-16 2022-03-31 13F MICROSOFT COM 594918104 504,636 -2,261 -0.45 155,584 -8.74 12.4314
2022-02-16 2021-12-31 13F MICROSOFT COM 594918104 506,897 -4,562 -0.89 170,480 18.23 13.1356
2021-11-12 2021-09-30 13F MICROSOFT COM 594918104 511,459 -39,497 -7.17 144,190 -3.39 12.1193
2021-08-13 2021-06-30 13F MICROSOFT COM 594918104 550,956 -525 -0.10 149,254 14.79 11.8567
2021-05-14 2021-03-31 13F MICROSOFT COM 594918104 551,481 -1,461 -0.26 130,023 5.72 11.2420
2021-02-12 2020-12-31 13F MICROSOFT COM 594918104 552,942 -8,191 -1.46 122,985 4.20 11.7390
2020-11-13 2020-09-30 13F MICROSOFT COM 594918104 561,133 -13,747 -2.39 118,023 0.88 12.3189
2020-08-14 2020-06-30 13F MICROSOFT COM 594918104 574,880 -10,861 -1.85 116,994 26.65 13.3267
2020-05-14 2020-03-31 13F MICROSOFT COM 594918104 585,741 -5,398 -0.91 92,377 -0.91 12.5142
2020-02-14 2019-12-31 13F MICROSOFT COM 594918104 591,139 -5,306 -0.89 93,223 12.42 9.4753
2019-11-13 2019-09-30 13F MICROSOFT COM 594918104 596,445 -3,871 -0.64 82,924 3.12 8.6853
2019-08-12 2019-06-30 13F MICROSOFT COM 594918104 600,316 -6,249 -1.03 80,418 12.41 8.3825
2019-05-14 2019-03-31 13F MICROSOFT COM 594918104 606,565 -5,339 -0.87 71,538 15.10 7.5867
2019-02-13 2018-12-31 13F MICROSOFT COM 594918104 611,904 -10,902 -1.75 62,151 -12.75 7.7612
2018-11-14 2018-09-30 13F MICROSOFT COM 594918104 622,806 -7,232 -1.15 71,230 14.65 7.8271
2018-08-14 2018-06-30 13F MICROSOFT COM 594918104 630,038 -107,883 -14.62 62,128 -7.75 7.0990
2018-05-14 2018-03-31 13F MICROSOFT COM 594918104 737,921 -137,528 -15.71 67,350 -10.06 7.3464
2018-02-14 2017-12-31 13F MICROSOFT COM 594918104 875,449 -125,072 -12.50 74,886 0.48 6.9170
2017-11-14 2017-09-30 13F MICROSOFT COM 594918104 1,000,521 -39,597 -3.81 74,529 3.95 6.4068
2017-08-14 2017-06-30 13F MICROSOFT COM 594918104 1,040,118 -26,277 -2.46 71,695 2.08 6.3244
2017-05-10 2017-03-31 13F MICROSOFT COM 594918104 1,066,395 -44,760 -4.03 70,233 1.72 6.1658
2017-02-14 2016-12-31 13F MICROSOFT COM 594918104 1,111,155 6,563 0.59 69,047 8.52 6.0232
2016-11-14 2016-09-30 13F MICROSOFT COM 594918104 1,104,592 -72,437 -6.15 63,624 5.64 5.4866
2016-08-12 2016-06-30 13F MICROSOFT COM 594918104 1,177,029 -14,695 -1.23 60,229 -8.49 4.9294
2016-05-13 2016-03-31 13F MICROSOFT COM 594918104 1,191,724 -41,909 -3.40 65,819 -3.83 5.5638
2016-02-12 2015-12-31 13F MICROSOFT COM 594918104 1,233,633 -9,249 -0.74 68,442 24.42 5.5145
2015-11-13 2015-09-30 13F MICROSOFT COM 594918104 1,242,882 -2,170 -0.17 55,010 0.07 4.5763
2015-08-14 2015-06-30 13F MICROSOFT COM 594918104 1,245,052 67,096 5.70 54,969 14.78 4.0678
2015-05-14 2015-03-31 13F MICROSOFT COM 594918104 1,177,956 -8,991 -0.76 47,890 -13.14 3.4782
2015-02-13 2014-12-31 13F MICROSOFT COM 594918104 1,186,947 -12,620 -1.05 55,134 -0.86 4.1686
2014-11-17 2014-09-30 13F MICROSOFT COM 594918104 1,199,567 6,248 0.52 55,612 11.76 4.6440
2014-08-13 2014-06-30 13F MICROSOFT COM 594918104 1,193,319 -439 -0.04 49,761 1.69 4.1264
2014-05-14 2014-03-31 13F MICROSOFT COM 594918104 1,193,758 69,924 6.22 48,932 16.39 4.2783
2014-02-13 2013-12-31 13F MICROSOFT COM 594918104 1,123,834 510,850 83.34 42,043 106.09 3.8011
2013-11-14 2013-09-30 13F MICROSOFT COM 594918104 612,984 612,984 20,400 1.9685
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.