Guardian Metal Resources PLC (NYSEAMERICAN:GMTL) is one of the 15 Best Precious Metal Stocks to Buy According to Wall Street Analysts. On April 20, 2026, Maxim analyst Tate Sullivan downgraded Guardian Metal Resources PLC (NYSEAMERICAN:GMTL) to Hold from Buy, saying the stock had already reached its price target. The firm also raised its expense forecasts and pushed its initial revenue estimate to the second half of 2029 from the first half, citing a longer timeline to generate first revenue from the comp ...