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Marcio Bastos Fonseca Insider Profile
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Marcio Bastos Fonseca, President & Chief Operating Officer at GR Silver Mining, holds 7.40M shares in GR Silver Mining (Ticker: GRSLF). Most recently, Marcio Bastos Fonseca Bought $100,000 shares of GR Silver Mining on May 01, 2025 for an estimated value of 11.50K.
Marcio Bastos Fonseca GR Silver Mining (GRSLF)President & Chief Operating Officer
GR Silver Mining (GRSLF)
President & Chief Operating Officer
Ranked #5,406 out of 102,830 Corporate Insiders
Profitable Transactions
6 out of 20 Profitable Transactions
Average Return
+22.10%
Average return per transaction
Time Frame
Compare to
Insider Holdings
100.00%
A breakdown of Marcio Bastos Fonseca's holdings
Insider Roles
President & Chief Operating Officer
Roles that Marcio Bastos Fonseca holds in companies
Most Profitable Insider Trade
The most profitable trade made by Marcio Bastos Fonseca
Marcio Bastos Fonseca's Trading History
List of latest transactions for each holding click on a transaction to see Marcio Bastos Fonseca's performance on stock
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Marcio Bastos Fonseca insider profile FAQ
What is the percentage of profitable transactions made by Marcio Bastos Fonseca?
The percentage of profitable transactions made by Marcio Bastos Fonseca is 30%.
What is the average return per transaction made by Marcio Bastos Fonseca?
The average return per transaction made by Marcio Bastos Fonseca is 22.10%.
What stocks does Marcio Bastos Fonseca hold?
Marcio Bastos Fonseca holds: GRSLF stocks.
What was Marcio Bastos Fonseca’s latest transaction?
Marcio Bastos Fonseca latest transaction was an Informative Buy of $11.50K.
What was Marcio Bastos Fonseca's most profitable transaction?
Marcio Bastos Fonseca’s most profitable transaction was an Informative Buy of GRSLF stock on November 5, 2019. The return on the trade was 248.90%.
What is Marcio Bastos Fonseca's role in GR Silver Mining?
Marcio Bastos Fonseca's role in GR Silver Mining is President & Chief Operating Officer.
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