First Majestic Silver Corp.
CA ˙ TSX ˙ CA32076V1031
27,43 CA$ ↓ -0,03 (-0,11%)
2026-06-04
DEL PRIS
SecurityCA:AG / First Majestic Silver Corp.
InstitutionRathbone Brothers plc
Latest Disclosed Ownership185,720 shares
Latest Disclosed Value $ 3,982,575
Rathbone Brothers plc reports 66.62% increase in ownership of AG / First Majestic Silver Corp.

On May 12, 2026 - Rathbone Brothers plc filed a 13F-HR form disclosing ownership of 185,720 shares of First Majestic Silver Corp. (CA:AG) valued at $5,538,170 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 6, 2026 disclosing 111,460 shares of First Majestic Silver Corp.. This represents a change in shares of 66.62% during the quarter. The current value of the position is $5,094,300 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)
2026-05-12 2026-03-31 13F FIRST MAJESTIC SILVER MINING NPV COM 32076V103 185,720 74,260 66.62 3,983 114.20 0.0170
2026-02-06 2025-12-31 13F/A-1 FIRST MAJESTIC SILVER MINING NPV COM 32076V103 111,460 25,170 29.17 1,860 75.38 0.0074
2026-01-21 2025-12-31 13F FIRST MAJESTIC SILVER MINING NPV COM 32076V103 111,460 25,170 1,860 0.0074
2025-11-13 2025-09-30 13F FIRST MAJESTIC SILVER MINING NPV COM 32076V103 86,290 2,108 2.50 1,060 52.30 0.0043
2025-08-07 2025-06-30 13F FIRST MAJESTIC SILVER NPV COM 32076V103 84,182 25,450 43.33 696 77.55 0.0030
2025-05-13 2025-03-31 13F FIRST MAJESTIC SILVER NPV COM 32076V103 58,732 1,880 3.31 393 25.64 0.0019
2025-02-13 2024-12-31 13F FIRST MAJESTIC SILVER NPV COM 32076V103 56,852 2,325 4.26 312 -4.59 0.0015
2024-11-13 2024-09-30 13F FIRST MAJESTIC SILVER MINING NPV COM 32076V103 54,527 420 0.78 327 2.19 0.0017
2024-08-09 2024-06-30 13F FIRST MAJESTIC SILVER NPV COM 32076V103 54,107 7,415 15.88 320 16.79 0.0017
2024-05-14 2024-03-31 13F FIRST MAJESTIC SILVER NPV COM 32076V103 46,692 -6,500 -12.22 275 -16.21 0.0016
2024-02-13 2023-12-31 13F FIRST MAJESTIC SILVER NPV COM 32076V103 53,192 -1,000 -1.85 327 17.63 0.0021
2023-11-13 2023-09-30 13F FIRST MAJESTIC SILVER NPV COM 32076V103 54,192 54,192 278 0.0020
2023-05-12 2023-03-31 13F FIRST MAJESTIC SILVER MINING NPV COM 32076V103 0 -12,200 -100.00 0 -100.00
2023-02-14 2022-12-31 13F FIRST MAJESTIC SILVER MINING NPV COM 32076V103 12,200 -800 -6.15 102 2.02 0.0011
2022-11-14 2022-09-30 13F/A-1 FIRST MAJESTIC SILVER NPV COM 32076V103 13,000 800 6.56 99 12.50 0.0012
2022-11-03 2022-09-30 13F FIRST MAJESTIC SILVER NPV COM 32076V103 13,000 800 99 0.0012
2022-08-12 2022-06-30 13F FIRST MAJESTIC SILVER MINING NPV COM 32076V103 12,200 12,200 88 0.0010
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.