Strategy Inc
MX ˙ BMV ˙ US5949724083
SecurityMX:MSTR / Strategy Inc
InstitutionBaader Bank INC
Latest Disclosed Ownership5,510 shares
Latest Disclosed Value $ 451,590
Baader Bank INC ownership in MSTR / Strategy Inc

On May 8, 2026 - Baader Bank INC filed a 13F-HR form disclosing ownership of 5,510 shares of Strategy Inc (MX:MSTR) valued at $451,590 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 2,298 shares of Strategy Inc. This represents a change in shares of 139.77% during the quarter.

Baader Bank INC has a history of taking positions in derivatives of the underlying security (MSTR) 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:MSTR / Strategy Inc 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)
2026-05-08 2026-03-31 13F STRATEGY CL A NEW 594972408 5,510 3,212 139.77 452 109.77 0.0353
2026-02-05 2025-12-31 13F STRATEGY CL A NEW 594972408 2,298 -2,306 -50.09 215 -76.55 0.0148
2025-11-06 2025-09-30 13F STRATEGY CL A NEW 594972408 4,604 4,604 917 0.0596
2025-01-23 2024-12-31 13F MICROSTRATEGY CL A NEW 594972408 0 -9,883 -100.00 0 -100.00
2024-10-29 2024-09-30 13F MICROSTRATEGY CL A NEW 594972408 9,883 9,057 1,096.49 1,194 28.83 0.0698
2024-07-17 2024-06-30 13F MICROSTRATEGY CL A NEW 594972408 826 826 927 0.0587
2024-05-03 2024-03-31 13F MICROSTRATEGY CL A NEW 594972408 0 -3,688 -100.00 0 -100.00
2024-02-08 2023-12-31 13F MICROSTRATEGY CL A NEW 594972408 3,688 629 20.56 2,263 125.75 0.1641
2023-11-14 2023-09-30 13F MICROSTRATEGY CL A NEW 594972408 3,059 240 8.51 1,002 6.60 0.0676
2023-08-11 2023-06-30 13F MICROSTRATEGY CL A NEW 594972408 2,819 2,819 941 0.0476
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
(%)
2026-05-08 2026-03-31 13F STRATEGY CL A NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-05 2025-12-31 13F STRATEGY CL A NEW Put 100,000 11,006 n/a n/a n/a
2025-11-06 2025-09-30 13F MICROSTRATEGY CL A NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-07-10 2025-06-30 13F MICROSTRATEGY CL A NEW Put 10,000 4,042 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.