NEW YORK ( TheStreet) -- Silver Wheaton ( SLW), Horsehead Holding ( ZINC) and Pan American Silver ( PAAS) topped the gainers' list, whereas Golden Star Resources ( GSS), Cloud Peak Energy ( CLD) and U.S. Steel ( X) came in decliners last week.Silver stocks dominated the winners' list with Silver Wheaton and Pan American Silver leading the pack with 10.5% and 7.5% gains, respectively. Compania de Minas Buenaventura ( BVN) jumped 5.8% after Banco Santander raised the stock to buy from hold. Among other silver producers, Hecla Mining ( HL), Silver Standard Resources ( SSRI), Coeur d'Alene Mines ( CDE), and Endeavour Silver ( EXK) posted 5.1%, 4.1%, 2.9%, and 0.4% gains, respectively. Horsehead Holding advanced 8% despite a 2.5% decline in LME zinc prices for spot delivery. For the 2010 fourth quarter, the company reported earnings per share ex-items at 15 cents vs. estimates of 6 cents, while sales came in at $96.3 million vs. consensus $93.2 million. Goldcorp ( GG) rose 5%, after reporting 2010 fourth quarter adjusted earnings per share at 57 cents vs. estimates of 47 cents and revenue at $1.32 billion vs. consensus $1.25 billion. Deutsche Bank upgraded the stock to buy from hold. Gold Fields ( GFI) rose 4.8%, continuing its gains from the penultimate week. During the week, Morgan Stanley raised its target price to 125 Rand from 116 Rand, while Citi increased its target to 100 Rand from 95 Rand. Among other gold producers Randgold Resources ( GOLD), AngloGold Ashanti ( AU), Barrick Gold ( ABX), Yamana Gold ( AUY), and New Gold ( NGD) were up 2.7%, 2.5%, 2.4%, 1.9%, and 1.8%, respectively, as gold COMEX spot delivery rose 0.3% last week. Golden Star Resources was the top loser. It declined 25.3% after the company reported loss of 3 cents per share in comparison to consensus earnings estimate of 3 cents per share. Macquarie downgraded the stock to neutral from outperform, while Raymond James cut its rating to market perform from outperform. Cloud Peak Energy dipped around 12.2% last week, after reporting 2010 fourth quarter adjusted earnings per share at 29 cents vs. consensus of 48 cents and revenue at $345.8 million vs. estimates of $348.4 million. U.S. Steel topped the steel stock losers, declining around 10.8%. AK Steel ( AKS) was down 10.5%, despite Keybanc upgrading the stock to buy from hold. Similarly, Mechel ( MTL) dipped 8.4%, despite Broker Credit Services raising its rating to buy from hold.