Microsoft Corporation
MX ˙ BMV ˙ US5949181045
SecurityMX:MSFT / Microsoft Corporation
InstitutionTCI Fund Management Ltd
Latest Disclosed Ownership2,728,412 shares
Latest Disclosed Value $ 1,009,976,270
TCI Fund Management Ltd reports 83.74% decrease in ownership of MSFT / Microsoft Corporation

On May 15, 2026 - TCI Fund Management Ltd filed a 13F-HR form disclosing ownership of 2,728,412 shares of Microsoft Corporation (MX:MSFT) valued at $1,009,976,270 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 16,781,953 shares of Microsoft Corporation. This represents a change in shares of -83.74% 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 COM 594918104 2,728,412 -14,053,541 -83.74 1,009,976 -87.56 2.2359
2026-02-17 2025-12-31 13F MICROSOFT COM 594918104 16,781,953 189,749 1.14 8,116,088 -5.56 15.1282
2025-11-14 2025-09-30 13F MICROSOFT COM 594918104 16,592,204 -973,027 -5.54 8,593,932 -1.64 16.3074
2025-08-14 2025-06-30 13F MICROSOFT COM 594918104 17,565,231 265,350 1.53 8,737,122 34.54 17.2306
2025-05-15 2025-03-31 13F MICROSOFT COM 594918104 17,299,881 3,306,244 23.63 6,494,202 10.10 14.9731
2025-02-14 2024-12-31 13F MICROSOFT COM 594918104 13,993,637 2,003,047 16.71 5,898,318 14.32 13.9066
2024-11-14 2024-09-30 13F MICROSOFT COM 594918104 11,990,590 1,458,700 13.85 5,159,551 9.61 11.7208
2024-08-14 2024-06-30 13F MICROSOFT COM 594918104 10,531,890 0 0.00 4,707,228 6.23 11.5023
2024-05-15 2024-03-31 13F MICROSOFT COM 594918104 10,531,890 -106,275 -1.00 4,430,977 10.76 11.1727
2024-02-14 2023-12-31 13F MICROSOFT COM 594918104 10,638,165 10,638,165 4,000,376 11.1222
2023-11-14 2023-09-30 13F MICROSOFT COM 594918104 0 -11,845,241 -100.00 0 -100.00
2023-08-14 2023-06-30 13F MICROSOFT COM 594918104 11,845,241 -3,453,947 -22.58 4,033,778 -8.55 11.9810
2023-05-15 2023-03-31 13F MICROSOFT COM 594918104 15,299,188 -6,969,763 -31.30 4,410,756 -17.41 15.1033
2023-02-14 2022-12-31 13F MICROSOFT COM 594918104 22,268,951 2,391,274 12.03 5,340,540 15.36 17.8437
2022-11-14 2022-09-30 13F MICROSOFT COM 594918104 19,877,677 248,642 1.27 4,629,511 -8.17 16.2003
2022-08-15 2022-06-30 13F MICROSOFT COM 594918104 19,629,035 2,364,269 13.69 5,041,325 -5.29 15.9529
2022-05-16 2022-03-31 13F MICROSOFT COM 594918104 17,264,766 581,722 3.49 5,322,900 -5.13 14.4495
2022-02-14 2021-12-31 13F MICROSOFT COM 594918104 16,683,044 0 0.00 5,610,841 19.30 12.6268
2021-11-15 2021-09-30 13F MICROSOFT COM 594918104 16,683,044 -3,800,361 -18.55 4,703,284 -15.24 11.2947
2021-08-16 2021-06-30 13F MICROSOFT COM 594918104 20,483,405 0 0.00 5,548,954 14.90 13.8392
2021-05-17 2021-03-31 13F MICROSOFT COM 594918104 20,483,405 6,168,906 43.10 4,829,372 51.68 14.0211
2021-02-16 2020-12-31 13F MICROSOFT COM 594918104 14,314,499 0 0.00 3,183,831 5.75 10.4486
2020-11-16 2020-09-30 13F MICROSOFT COM 594918104 14,314,499 -140,941 -0.98 3,010,769 2.34 10.8003
2020-08-14 2020-06-30 13F MICROSOFT COM 594918104 14,455,440 458,722 3.28 2,941,827 33.27 11.6711
2020-05-15 2020-03-31 13F MICROSOFT COM 594918104 13,996,718 3,316,986 31.06 2,207,422 31.07 10.4821
2020-02-14 2019-12-31 13F MICROSOFT COM 594918104 10,679,732 0 0.00 1,684,194 13.43 7.4514
2019-11-14 2019-09-30 13F MICROSOFT COM 594918104 10,679,732 -5,745,842 -34.98 1,484,803 -32.52 7.7045
2019-08-14 2019-06-30 13F MICROSOFT COM 594918104 16,425,574 -1,066,000 -6.09 2,200,370 6.66 11.8693
2019-05-15 2019-03-31 13F MICROSOFT COM 594918104 17,491,574 -4,326,230 -19.83 2,062,956 -6.91 13.4820
2019-02-14 2018-12-31 13F MICROSOFT COM 594918104 21,817,804 8,605,697 65.13 2,216,034 46.65 11.0872
2018-11-14 2018-09-30 13F MICROSOFT COM 594918104 13,212,107 -598,342 -4.33 1,511,069 10.96 7.9121
2018-08-14 2018-06-30 13F MICROSOFT COM 594918104 13,810,449 0 0.00 1,361,848 8.04 6.4037
2018-05-15 2018-03-31 13F MICROSOFT COM 594918104 13,810,449 5,745,100 71.23 1,260,480 82.70 7.0094
2018-02-14 2017-12-31 13F MICROSOFT COM 594918104 8,065,349 8,065,349 689,910 4.2775
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.