Energy Stocks: Winners and Losers

NEW YORK ( TheStreet) - Aventine Renewable Energy Holdings ( AVRW), Magellan Midstream Partners ( MMP) and Sunoco Logistics Partners ( SXP) showed strength this past week, while LDK Solar ( LDK), Cobalt International Energy ( CIE), Key Energy Services ( KEG) and Suntech Power Holdings ( STP) eroded substantial value.

Aventine Renewable Energy Holdings led the pack of winners last week, up 5.0%.

Magellan Midstream Partners and Sunoco Logistics Partners rose 2.4% and 1.4%, respectively.

NuStar GP Holdings ( NSH) improved 1%.

ONEOK Partners ( OKS), Bristow Group ( BRS) and Kinder Morgan Management ( KMR) appreciated less than 1% last week.

LDK Solar was the top decliner, plunging 32%.

Suntech Power Holdings pared 28.2%. Mizuho has downgraded the stock to underperform from neutral.

Cobalt International Energy shed 26.8% for the week.

Key Energy Services lost 26.3%. Global Hunter Securities has downgraded the stock to accumulate from buy with a 12-month target price of $14 per share.

Complete Production Services ( CPX) pared 26% loss. The stock was downgraded to accumulate from buy at Global Hunter Securities with a 12-month target price of $28 per share.

CARBO Ceramics Inc. ( CRR) and Forest Oil Corp. ( FST) relinquished 24.3% and 22.9%, respectively.

Nabors Industries ( NBR) wiped out 22.6%. Global Hunter Securities has downgraded the stock to accumulate from buy with a 12-month target price of $22 per share.

Other stocks on the losing end included Exterran Holdings ( EXH), down 22.5%, Plains Exploration & Production ( PXP), down 22%, Whiting Petroleum ( WLL) down 21.8%, Swift Energy ( SFY), down 21.5%, Precision Drilling ( PDS), down 21.4%, Weatherford International ( WFT) down 21.1%, Renesola ( SOL) down 20.9%, Oil States International ( OIS) down 20.7% and SM Energy ( SM) down 20.7%.

Patterson-UTI Energy ( PTEN) erased 20.6%. Global Hunter Securities has downgraded the stock to accumulate from buy with a 12-month target price of $28 per share.

Halliburton ( HAL) and Tesoro Corp. ( TSO) retreated 20.6% and 20.2% lower, respectively.

RPC Inc. ( RES) lost 20.2%. The stock was downgraded to neutral from accumulate at Global Hunter Securities with a 12-month target price of $26 per share.

Helix Energy Solutions Group ( HLX) declined 20.1%.

Trina Solar ( TSL) shed 20.2%. The stock was downgraded to neutral from buy at Mizuho.

On average, Superior Energy Services ( SPN), Unit Corp. ( UNT), SunPower ( SPWRA) and ( SPWRB), McMoRan Exploration ( MMR), Berry Petroleum ( BRY) and Oasis Petroleum ( OAS) closed 19% lower last week.