Shares linked to silver strengthened on Wednesday, after the metal hit another record high and held above the $90 threshold. On Tuesday, spot silver — which outperformed gold last year with a 150% annual gain — crossed over the $90-an-ounce mark for the first time. It was more than 5.8% higher at $92.03 per ounce by 8:15 a.m. ET on Wednesday. Silver futures for March delivery, meanwhile, were last seen trading at $91.895. Spot prices for the metal are up 27% so far this year and, as the rally continued, equities related to the metal moved higher. In pre-market trade, U.S.-listed shares of Hecla Mining — which owns ... (full story)