Microsoft Corporation
MX ˙ BMV ˙ US5949181045
SecurityMX:MSFT / Microsoft Corporation
InstitutionSei Investments Co
Latest Disclosed Ownership7,111,821 shares
Latest Disclosed Value $ 3,439,417,370
Sei Investments Co ownership in MSFT / Microsoft Corporation

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 7,111,821 shares of Microsoft Corporation (MX:MSFT) valued at $3,439,417,370 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 6,693,894 shares of Microsoft Corporation. This represents a change in shares of 6.24% during the quarter.

Sei Investments Co has a history of taking positions in derivatives of the underlying security (MSFT) in the form of stock options.

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)
2026-02-13 2025-12-31 13F MICROSOFT COM 594918104 7,111,821 417,927 6.24 3,439,417 -0.80
2025-11-13 2025-09-30 13F MICROSOFT COM 594918104 6,693,894 142,204 2.17 3,467,105 6.39 3.7283
2025-08-14 2025-06-30 13F MICROSOFT COM 594918104 6,551,690 691,063 11.79 3,258,872 48.13 3.7775
2025-05-14 2025-03-31 13F/A-1 MICROSOFT COM 594918104 5,860,627 138,645 2.42 2,200,021 -8.78 2.8316
2025-05-13 2025-03-31 13F MICROSOFT COM 594918104 5,759,897 37,915 2,367,082 2.5745
2025-02-11 2024-12-31 13F MICROSOFT COM 594918104 5,721,982 -19,858 -0.35 2,411,818 -2.38 3.0973
2024-11-12 2024-09-30 13F MICROSOFT COM 594918104 5,741,840 96,922 1.72 2,470,709 -2.07 3.2084
2024-08-13 2024-06-30 13F MICROSOFT COM 594918104 5,644,918 331,203 6.23 2,522,995 12.86 3.5744
2024-05-07 2024-03-31 13F MICROSOFT COM 594918104 5,313,715 251,408 4.97 2,235,586 17.44 3.2756
2024-02-14 2023-12-31 13F MICROSOFT COM 594918104 5,062,307 106,412 2.15 1,903,628 21.65 3.0558
2023-11-14 2023-09-30 13F MICROSOFT COM 594918104 4,955,895 175,330 3.67 1,564,825 -3.88 2.8118
2023-08-11 2023-06-30 13F MICROSOFT COM 594918104 4,780,565 636,552 15.36 1,627,971 36.26 2.8396
2023-05-12 2023-03-31 13F MICROSOFT COM 594918104 4,144,013 699,022 20.29 1,194,716 44.61 2.2192
2023-02-10 2022-12-31 13F MICROSOFT COM 594918104 3,444,991 -798,657 -18.82 826,186 -16.41 1.8360
2022-11-14 2022-09-30 13F MICROSOFT COM 594918104 4,243,648 -160,008 -3.63 988,346 -12.63 2.2046
2022-08-15 2022-06-30 13F MICROSOFT COM 594918104 4,403,656 453,457 11.48 1,131,236 -7.12 2.4429
2022-05-13 2022-03-31 13F MICROSOFT COM 594918104 3,950,199 100,827 2.62 1,217,896 -5.90 2.4480
2022-02-14 2021-12-31 13F MICROSOFT COM 594918104 3,849,372 68,704 1.82 1,294,245 21.43 2.4281
2021-11-12 2021-09-30 13F MICROSOFT COM 594918104 3,780,668 -123,115 -3.15 1,065,857 0.78 2.2362
2021-08-06 2021-06-30 13F MICROSOFT COM 594918104 3,903,783 -111,040 -2.77 1,057,596 12.70 2.3451
2021-05-12 2021-03-31 13F MICROSOFT COM 594918104 4,014,823 -114,401 -2.77 938,430 2.18 2.3644
2021-02-08 2020-12-31 13F MICROSOFT COM 594918104 4,129,224 -75,704 -1.80 918,403 3.84 2.3743
2020-12-04 2020-09-30 13F/A-1 MICROSOFT COM 594918104 4,204,928 -457,967 -9.82 884,448 -6.79 2.5611
2020-11-06 2020-09-30 13F MICROSOFT COM 594918104 4,672,071 9,176 982,702 2,366,127.9232
2020-08-17 2020-06-30 13F/A-1 MICROSOFT COM 594918104 4,662,895 -443,275 -8.68 948,900 17.83 2.9448
2020-08-11 2020-06-30 13F MICROSOFT COM 594918104 4,704,988 -401,182 776,693 2,106,821.1057
2020-05-14 2020-03-31 13F MICROSOFT COM 594918104 5,106,170 -20,095 -0.39 805,292 -0.39 2.9578
2020-02-06 2019-12-31 13F MICROSOFT COM 594918104 5,126,265 -157,621 -2.98 808,436 -74.94 2.4114
2019-11-12 2019-09-30 13F MICROSOFT COM 594918104 5,283,886 373,409 7.60 3,226,343 390.49 8.2532
2019-08-14 2019-06-30 13F MICROSOFT COM 594918104 4,910,477 -184,236 -3.62 657,778 9.46 2.1486
2019-05-15 2019-03-31 13F MICROSOFT COM 594918104 5,094,713 774,671 17.93 600,907 24.85 2.0180
2019-02-13 2018-12-31 13F MICROSOFT COM 594918104 4,320,042 609,971 16.44 481,321 13.42 1.7136
2018-11-08 2018-09-30 13F MICROSOFT COM 594918104 3,710,071 -788,897 -17.54 424,356 -4.35 1.5381
2018-08-03 2018-06-30 13F MICROSOFT COM 594918104 4,498,968 359,423 8.68 443,643 17.42 1.5079
2018-05-11 2018-03-31 13F MICROSOFT COM 594918104 4,139,545 -603,976 -12.73 377,816 -6.89 1.4482
2018-02-08 2017-12-31 13F MICROSOFT COM 594918104 4,743,521 -101,261 -2.09 405,760 12.43 1.4090
2017-11-06 2017-09-30 13F MICROSOFT COM 594918104 4,844,782 60,186 1.26 360,888 9.43 1.2828
2017-07-31 2017-06-30 13F MICROSOFT COM 594918104 4,784,596 398,032 9.07 329,802 14.16 1.3148
2017-05-05 2017-03-31 13F MICROSOFT COM 594918104 4,386,564 62,182 1.44 288,899 7.51 1.2660
2017-02-02 2016-12-31 13F MICROSOFT COM 594918104 4,324,382 -27,205 -0.63 268,718 7.21 1.3012
2016-11-04 2016-09-30 13F MICROSOFT COM 594918104 4,351,587 1,036,893 31.28 250,651 47.78 1.2733
2016-08-11 2016-06-30 13F MICROSOFT COM 594918104 3,314,694 -155,464 -4.48 169,612 -11.50 1.0173
2016-05-10 2016-03-31 13F/A-1 MICROSOFT COM 594918104 3,470,158 285,617 8.97 191,657 8.48 1.1927
2016-02-03 2015-12-31 13F MICROSOFT COM 594918104 3,184,541 1,625,321 104.24 176,678 156.01 1.0768
2015-11-02 2015-09-30 13F/A-1 MICROSOFT COM 594918104 1,559,220 -34,079 -2.14 69,011 -1.90 0.6335
2015-10-30 2015-09-30 13F MICROSOFT COM 594918104 1,559,220 69,011
2015-08-07 2015-06-30 13F/A-1 MICHAELS COS PUT 594918104 0 -1,826,911 -100.00 0 -100.00
2015-08-07 2015-06-30 13F/A-1 MICROSOFT COM 594918104 1,593,299 -233,612 -12.79 70,345 -5.30 0.6360
2015-08-04 2015-06-30 13F MICROSOFT COM 594918104 1,593,299 -233,612 70,345 0.6360
2015-05-14 2015-03-31 13F/A-1 MICROSOFT COM 594918104 1,826,911 12,077 0.67 74,283 -11.89 0.6451
2015-05-01 2015-03-31 13F MICHAELS COS PUT 594918104 1,826,911 1,826,911 74,283 0.6451
2015-02-10 2014-12-31 13F MICROSOFT COM 594918104 1,814,834 1,814,834 84,303 0.7452
Disclosed Put 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
(%)
2015-08-07 2015-06-30 13F/A MICHAELS COS PUT 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-01 2015-03-31 13F MICHAELS COS PUT 1,826,911 74,283 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.