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Hecla Mining (HL) calls active as share trend up from 16-month lows Dec 6, 2011 03:44PM
Stocks with implied volatility below IV index mean; S HL Jun 27, 2011 07:25AM
Hecla Mining (HL) volatility increases as gold rally's above $1400 Nov 8, 2010 12:23PM
Stocks with implied volatility below index mean range; POT HL C Jun 25, 2010 07:13AM
Stocks with implied volatility below index mean range; POT HL C Jun 24, 2010 07:27AM


May 19, 2010 07:10AM Stocks with implied volatility above 30-day mean; AEM MCO MDT HL