Glencore tanks another 25%: Who's next? By: CNBC.com News September 28, 2015 at 07:12 AM EDT Glencore saw its shares slip another 25 percent Monday with analysts stressing that the weakness is likely to be felt across the entire sector. Read More >> Related Stocks: Bhp Billiton Plc ADR Glencore International Plc ADR Rio Tinto Plc ADR Sprott Resource Holdings Inc