NEW YORK ( TheStreet) -- Key Energy Services (KEG - Get Report), EV Energy Partners (EVEP - Get Report), Tesoro (TSO - Get Report) and Complete Production Services (CPX) were top performers last week, while J.A. Solar (JASO - Get Report), Forest Oil (FST) and Trina Solar (TSL - Get Report) eroded substantial value.
Among the advancers the past week, Key Energy Services and EV Energy Partners topped the charts, gaining 10.9% and 10.8%, respectively.
Tesoro rose 10.7% over the week, as Barclays Capital has raised the stock's rating to overweight from equal weight with a target price of $37 per share. Tesoro's Los Angeles refinery, temporarily shutdown, is ramping up towards normal operations.
Complete Production Services rose 10.1% after J.P. Morgan rated the stock overweight with a target price of $42 per share.
gained 9.8% and 9.5%, respectively.
Oil States International
(OIS - Get Report)
moved up 9.3% as CLSA has raised the stock's rating to buy from outperform. The brokerage has raised the target price to $95 per share from $94.
Halliburton advanced 9% this week.
rose 8.7% after receiving equipment orders worth $81.7 million from two customers in Asia. The orders were for equipment to produce poly-silicon used in the manufacture of solar cells.
Among other movers,
(PTEN - Get Report)
(RES - Get Report)
Superior Energy Services
(SPN - Get Report)
grew 7.7% and
(CKH - Get Report)
Helmerich & Payne
(HP - Get Report)
moved up 7.4% last week after signing agreements to build and operate 12 FlexRigs, for delivery to eight exploration and production companies during fiscal 2012.
(OII - Get Report)
gained 7.1% during the week.
(NOV - Get Report)
piled 6.8% on plans to acquire Ameron International, a manufacturer of fiberglass-composite pipes for a consideration of $85 per share in all an all-cash transaction valuing Ameron at $772 million, or 7.1 times its estimated 2012 EBITDA.
Other winners included
(WLL - Get Report)
up 6.6%, while
(CLR - Get Report)
rose 6.2%, whereas
(APC - Get Report)
(SLB - Get Report)
gained 6.1% each.
(CXO - Get Report)
piled 5.8% and
(YPF - Get Report)
J.A. Solar Holdings was the top lagger, shedding 8.2% as a drop in polysilicon prices could affect the company's competitiveness. The company has signed long-term purchase contracts with producers like GCL-Poly Energy Holdings and Wacker Chemie.
Forest Oil Corporation shed 7.5%.
Trina Solar declined 5.6% as Zacks has maintained a sell on the stock.