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Complete Production Services led the pack of winners last week, gaining 53.2%.
Cobalt International Energy rose 26.4%.
Gran Tierra Energy improved 25.3%. The company starts exploration drilling operations on two oil prospects in Brazil, as per
International Resource News.
ReneSola increased 23.8%.
Other movers were
Frontline Ltd.(FRO) (up 23.0%),
Oasis Petroleum(OAS) (up 22.7%),
Forest Oil Corp(FST) (up 22.6%) and
Denbury Resources Inc(DNR) (up 22.0%).
Range Resources Corp(RRC) gained 20.8%. According to
Bloomberg, the company rose on speculation of a takeover bid. Range Resources is a holder of 1.2 million net acres in the Marcellus Shale natural gas field.
Oil States International Inc(OIS) added 20.2%. The company was upgraded to overweight from equal weight at Johnson Rice.
Precision Drilling Corp.(PDS) added 19.9%. The company was rated a new accumulate at Global Hunter Securities. The 12-month target price is $13.0 a share.
Helix Energy Solutions Group(HLX) and
Trina Solar(TSL) climbed 19.9% and 19.6%, respectively.
Valero Energy Corp(VLO) gained 19.4%. The company was raised to overweight from equal-weight at Barclays capital. The 12-month target price is $35.0 a share.
Advantage Oil & Gas(AAV),
Key Energy Services(KEG),
Brigham Exploration Co(BEXP),
Tesoro Corp(TSO) and
Berry Petroleum Co(BRY) closed 17%-18% higher last week.
Talisman Energy Inc(TLM) rose 14%. The company was raised to outperform from market perform.
First Solar was the top decliner, plunging 5.9%.
Superior Energy Services and Chesapeake Midstream Partners shed 2.9% and 1.9%, respectively.
TransAtlantic Petroleum lost 1.3%. The company was cut to accumulate from buy at Global Hunter Securities.
JA Solar Holdings(JASO) and
China Petroleum & Chemical(SNP) each lost 0.5% last week.