Microsoft Corporation
MX ˙ BMV ˙ US5949181045
SecurityMX:MSFT / Microsoft Corporation
InstitutionIron Financial, LLC
Latest Disclosed Ownership6,806 shares
Latest Disclosed Value $ 2,519,408
Iron Financial, LLC ownership in MSFT / Microsoft Corporation

On April 27, 2026 - Iron Financial, LLC filed a 13F-HR form disclosing ownership of 6,806 shares of Microsoft Corporation (MX:MSFT) valued at $2,519,408 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 22, 2026 disclosing 6,475 shares of Microsoft Corporation. This represents a change in shares of 5.11% during the quarter.

Iron Financial, LLC 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)
2026-04-27 2026-03-31 13F MICROSOFT COM 594918104 6,806 331 5.11 2,519 -19.55 1.1010
2026-01-22 2025-12-31 13F MICROSOFT COM 594918104 6,475 -35 -0.54 3,132 -7.12 1.4394
2025-10-24 2025-09-30 13F MICROSOFT COM 594918104 6,510 -275 -4.05 3,372 -0.12 1.6148
2025-07-25 2025-06-30 13F MICROSOFT COM 594918104 6,785 -400 -5.57 3,375 25.14 1.7495
2025-04-25 2025-03-31 13F MICROSOFT COM 594918104 7,185 -49 -0.68 2,697 -11.54 1.5121
2025-01-22 2024-12-31 13F MICROSOFT COM 594918104 7,234 -89 -1.22 3,049 -3.24 1.7130
2024-10-28 2024-09-30 13F MICROSOFT COM 594918104 7,323 -438 -5.64 3,151 -9.14 1.7149
2024-07-29 2024-06-30 13F MICROSOFT COM 594918104 7,761 62 0.81 3,469 7.07 1.9452
2024-04-23 2024-03-31 13F MICROSOFT COM 594918104 7,699 -466 -5.71 3,239 5.50 1.8056
2024-01-19 2023-12-31 13F MICROSOFT COM 594918104 8,165 109 1.35 3,071 20.72 1.7425
2023-10-31 2023-09-30 13F MICROSOFT COM 594918104 8,056 -2,344 -22.54 2,544 -28.18 1.4765
2023-07-24 2023-06-30 13F MICROSOFT COM 594918104 10,400 -83 -0.79 3,542 17.17 1.9015
2023-04-26 2023-03-31 13F MICROSOFT COM 594918104 10,483 34 0.33 3,022 20.64 1.6592
2023-02-14 2022-12-31 13F MICROSOFT COM 594918104 10,449 -207 -1.94 2,506 0.93 1.4386
2022-11-14 2022-09-30 13F MICROSOFT COM 594918104 10,656 2,649 33.08 2,482 20.72 1.3627
2022-07-27 2022-06-30 13F MICROSOFT COM 594918104 8,007 -377 -4.50 2,056 -20.46 1.0766
2022-05-04 2022-03-31 13F MICROSOFT COM 594918104 8,384 -208 -2.42 2,585 -10.55 1.1913
2022-02-11 2021-12-31 13F MICROSOFT COM 594918104 8,592 -67 -0.77 2,890 18.39 1.2891
2021-11-02 2021-09-30 13F MICROSOFT COM 594918104 8,659 -1,626 -15.81 2,441 -12.38 1.1709
2021-07-28 2021-06-30 13F MICROSOFT COM 594918104 10,285 -56 -0.54 2,786 14.27 1.3037
2021-05-07 2021-03-31 13F MICROSOFT COM 594918104 10,341 581 5.95 2,438 12.30 1.2865
2021-01-13 2020-12-31 13F MICROSOFT COM 594918104 9,760 -125 -1.26 2,171 4.43 1.0927
2020-11-09 2020-09-30 13F MICROSOFT COM 594918104 9,885 -458 -4.43 2,079 -1.24 1.1485
2020-07-15 2020-06-30 13F MICROSOFT COM 594918104 10,343 -539 -4.95 2,105 22.67 1.0850
2020-04-20 2020-03-31 13F MICROSOFT COM 594918104 10,882 356 3.38 1,716 3.37 1.0741
2020-01-30 2019-12-31 13F MICROSOFT COM 594918104 10,526 1,011 10.63 1,660 25.47 0.7910
2019-10-21 2019-09-30 13F MICROSOFT COM 594918104 9,515 431 4.74 1,323 23.53 0.9853
2019-08-02 2019-06-30 13F MICROSOFT COM 594918104 9,084 569 6.68 1,071 6.67 0.9995
2019-05-08 2019-03-31 13F MICROSOFT COM 594918104 8,515 1,216 16.66 1,004 35.49 0.6352
2019-01-15 2018-12-31 13F MICROSOFT COM 594918104 7,299 -262 -3.47 741 -14.34 0.5769
2018-10-18 2018-09-30 13F MICROSOFT COM 594918104 7,561 321 4.43 865 21.15 0.5806
2018-07-30 2018-06-30 13F MICROSOFT US Equities 594918104 7,240 -329 -4.35 714 3.33 0.3876
2018-04-23 2018-03-31 13F MICROSOFT COM 594918104 7,569 -2,128 -21.94 691 -16.75 0.4435
2018-01-30 2017-12-31 13F MICROSOFT COM 594918104 9,697 746 8.33 830 24.44 0.5769
2017-10-23 2017-09-30 13F MICROSOFT COM 594918104 8,951 -75 -0.83 667 7.23 0.5088
2017-07-31 2017-06-30 13F MICROSOFT COM 594918104 9,026 -518 -5.43 622 -1.11 0.5513
2017-05-02 2017-03-31 13F MICROSOFT COM 594918104 9,544 502 5.55 629 11.92 0.4533
2017-01-27 2016-12-31 13F MICROSOFT COM 594918104 9,042 -279 -2.99 562 4.66 0.3838
2016-11-03 2016-09-30 13F MICROSOFT COM 594918104 9,321 -129 -1.37 537 10.95 0.6556
2016-07-28 2016-06-30 13F MICROSOFT COM 594918104 9,450 -78 -0.82 484 -7.98 0.6236
2016-04-11 2016-03-31 13F MICROSOFT COM 594918104 9,528 -773 -7.50 526 -8.04 0.5311
2016-01-19 2015-12-31 13F MICROSOFT US Equities 594918104 10,301 1,502 17.07 572 47.04 0.4865
2015-10-27 2015-09-30 13F MICROSOFT US Equities 594918104 8,799 2 0.02 389 0.26 0.2589
2015-07-30 2015-06-30 13F MICROSOFT COM 594918104 8,797 2 0.02 388 8.38 0.3658
2015-04-09 2015-03-31 13F MICROSOFT Equity 594918104 8,795 8,795 0.00 358 0.2795
2015-01-29 2014-12-31 13F MICROSOFT COM 594918104 0 -10,784 -100.00 0 -100.00
2014-10-22 2014-09-30 13F MICROSOFT COM 594918104 10,784 -47 -0.43 500 10.62 0.6380
2014-07-30 2014-06-30 13F MICROSOFT Equities 594918104 10,831 -996 -8.42 452 -6.80 0.3996
2014-05-07 2014-03-31 13F MICROSOFT COM 594918104 11,827 -616 -4.95 485 4.08 0.3689
2014-01-08 2013-12-31 13F MICROSOFT COM 594918104 12,443 12,443 466 0.4754
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
(%)
2025-10-24 2025-09-30 13F MICROSOFT COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-07-25 2025-06-30 13F MICROSOFT COM Put 1,500 746 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.