** Cormark Securities raises PT on Canada-based miner First Majestic AG.TO to C$22 from C$17.5
** The new price target represents a 30% upside to the stock's last close
** Brokerage says First Majestic's exploration success and throughput expansion support a higher valuation
** "Given the strong performance of the silver price this year, we would expect reserve pricing to be increased to the $28.00-30.00/oz range, which would add ounces but modestly decrease reserve grades"- Cormark Securities
** Brokerage expects silver price strength and district-scale upside at Los Gatos to extend mine life
** 2 of 5 brokerages rate the stock "buy" or higher, 3 "hold"; their median PT is C$14- data compiled by LSEG
** Up to last close, stock up 114% YTD
(Reporting by Dharna Bafna in Bengaluru)
((Dharna.bafna@thomsonreuters.com))