BUZZ-Yamana Gold Inc: Share offering
** Canadian gold producer's shares down 11 pct at C$5.06; U.S.-listed shares down 9 pct at $4.31
** Company reports late on Monday a sale of 49 mln shares at C$5.30 each to a group of underwriters led by Canaccord Genuity Corp and National Bank Financial Markets
** Yamana's offer price at 6.7 pct discount to its Monday close of C$5.68; Offering represents 5.6 pct of its total outstanding shares
** Company says proceeds from offering will be used to reduce its debt
** HSBC downgrades stock to "neutral" from "overweight", and price target to $5 from $5.70
** Up to Monday's close, company's shares had fallen about 43 pct in the past 12 months
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