GSM - Why Ferroglobe Stock Popped Today February, 14 2022 04:15 PM Ferroglobe PLC Shares of Ferroglobe (NASDAQ: GSM) , a maker of specialty metals , popped in Monday trading and is up 11.3% as of 3:45 p.m. ET. You can thank investment bank Seaport Global for that. Image source: Getty Images. Continue reading For further details see: Why Ferroglobe Stock Popped Today