Bank of Montreal
US ˙ NYSE ˙ CA0636711016

SecurityBMO / Bank of Montreal
InstitutionGroup One Trading, L.p.
Latest Disclosed Ownership5,866 shares
Latest Disclosed Value $ 761,348
Group One Trading, L.p. reports 104.32% increase in ownership of BMO / Bank of Montreal

On February 11, 2026 - Group One Trading, L.p. filed a 13F-HR form disclosing ownership of 5,866 shares of Bank of Montreal (US:BMO) valued at $761,348 USD as of December 31, 2025. The current value of the position is $952,228 USD.

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)
2026-02-11 2025-12-31 13F BANK MONTREAL QUE COM 063671101 5,866 2,995 104.32 761 104.02 0.0013
2025-11-12 2025-09-30 13F BANK MONTREAL QUE COM 063671101 2,871 2,871 374 0.0007
2025-05-14 2024-12-31 13F/A-1 BANK MONTREAL QUE COM 063671101 0 -3,632 -100.00 0 -100.00
2025-02-14 2024-12-31 13F BANK MONTREAL QUE COM 063671101 0 0
2024-11-14 2024-09-30 13F BANK MONTREAL QUE COM 063671101 3,632 3,632 328 0.0009
2024-05-10 2024-03-31 13F BANK MONTREAL QUE COM 063671101 0 -5,647 -100.00 0 -100.00
2024-02-14 2023-12-31 13F BANK MONTREAL QUE COM 063671101 5,647 -9,062 -61.61 559 -55.00 0.0015
2023-11-09 2023-09-30 13F BANK MONTREAL QUE COM 063671101 14,709 14,709 1,241 0.0042
2023-08-09 2023-06-30 13F BANK MONTREAL QUE COM 063671101 0 -627 -100.00 0 -100.00
2023-05-12 2023-03-31 13F BANK MONTREAL QUE COM 063671101 627 627 56 0.0002
2022-05-11 2022-03-31 13F BANK MONTREAL QUE COM 063671101 0 -5,369 -100.00 0 -100.00
2022-02-11 2021-12-31 13F BANK MONTREAL QUE COM 063671101 5,369 5,369 578 0.0005
2021-05-12 2021-03-31 13F BANK MONTREAL QUE COM 063671101 0 -5,256 -100.00 0 -100.00
2021-02-10 2020-12-31 13F BANK MONTREAL QUE COM 063671101 5,256 5,256 400 0.0007
2017-05-10 2017-03-31 13F BANK MONTREAL QUE COM 063671101 0 -24 -100.00 0 -100.00
2017-02-15 2016-12-31 13F BANK MONTREAL QUE COM 063671101 24 24 2 0.0000
2016-08-12 2016-06-30 13F BANK MONTREAL QUE COM 063671101 0 -199 -100.00 0 -100.00
2016-05-12 2016-03-31 13F BANK MONTREAL QUE COM 063671101 199 85 74.56 12 100.00 0.0002
2016-02-11 2015-12-31 13F BANK MONTREAL QUE COM 063671101 114 114 6 0.0001
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.