Similarly First Solar International ( FSLR) declined 8.8% during the week. For the 2010 fourth quarter, the company reported earnings per share at $1.80 vs. estimates of $1.74, while sales came in at $609.8 million vs. consensus $646.8 million. For 2011, the company expects net sales in the range of $3.7 billion-$3.8 billion vs. estimates of $3.76 billion and earnings per share in the range of $9.25-$9.75 vs. consensus $9.10. Susquehanna increased its price target on First Solar to $190 from $180 on the company's fourth-quarter results citing improved revenue mix. RBC Capital raised its price target on the stock to $190 from $160 on expectations that the company will likely generate higher than expected margins and production. Meanwhile, UBS cut its rating to neutral from buy. Other solar stocks ReneSola ( SOL), Yingli Green Energy Holdings ( YGE), GT Solar International ( SOLR), LDK Solar ( LDK), Trina Solar ( TSL) and Suntech Power Holdings ( STP) declined around 9.3%, 3.7%, 3.6%, 1.9%, 1.8%, and 1.5%, respectively. Exterran Holdings ( EXH) dipped 7.3% during the week, after 2010 fourth quarter losses widened to 51 cents per share from analysts' estimates of 34 cents. Ultra Petroleum ( UPL) dropped 5.8% after Global Hunter Securities cut the stock to accumulate from buy. Meanwhile, UBS lowered its target price to $49 from $51, maintaining neutral rating, and lowered 2011 EPS to $2.65 from $2.70 vs. consensus estimates of $2.93 per share. Among others, Chesapeake Midstream Partners ( CHKM), Forest Oil ( FST), Weatherford International ( WFT) and Tesoro ( TSO) dipped 9.1%, 8.9%, 8.1% and 6.4%, respectively.