Trina Solar Limited (NYSE:TSL) shares soared after the company reported better-than-expected first quarter earnings. Quarterly revenue for the company fell 15.4% year-over-year to $444.9 million, which translated to net income of $26.5 million, or $0.37 per diluted American depositary share. Analysts, on average, had been expecting the company to turn in earnings of just $0.03 per share on higher sales of $460.78 million. CEO Jifan Gao stated, “We remain focused on maintaining profitable growth as opposed to pursuing volume growth alone. By employing this strategy, we increased our gross margin to 20.6% this quarter, a significant improvement from the previous quarter’s 15.1%. This improvement underpinned a net income increase of 73.5% quarter-over-quarter.” Trina Solar Limited (ADR) (NYSE:TSL) stock performance was 30.89% in last session and finished the day at $13.56. Traded volume was 19.61million shares in the last session and the average volume of the stock remained 5.30million shares. The beta of the stock remained 2.89.

Tronox Ltd. (NYSE:TROX)’s rating falls to a D (“sell”) this week, down from C (“hold”) the week prior. Company produces and markets titanium dioxide. In Portfolio Grader’s specific subcategories of Earnings Momentum, Earnings Revisions, Equity and Margin Growth, TROX also gets F’s. At $23.95, the stock is below the 50-day moving average of $24.16. Tronox Ltd (NYSE:TROX) rose 7.62 percent to $26.13 Wednesday on volume of 2.67million shares. The intra-day range of the stock was $24.05 to $26.48. Tronox Ltd (NYSE:TROX) has a market capitalization of $1.52billion.

The stock of Forest Oil Corporation (NYSE:FST) was raised to Neutral from Underperform at Macquarie back on Monday. Forest Oil shares were down about $0.10 for the week as of late Friday, but another “Sell” rating has been removed from a $2.14 stock. Forest Oil Corporation (NYSE:FST)’s stock on May 21, 2014 reported a increase of 7.55% to the closing price of $2.28. Its fifty two weeks range is $1.68 -$6.67. The total market capitalization recorded $271.39million. The overall volume in the last trading session was 4.89million shares. In its share capital, FST has 119.04million outstanding shares.

Life Time Fitness, Inc. (NYSE:LTM) stock spiked Wednesday after Marcato Capital filed an SEC form disclosing various purchases of common stock and call options since March 24. TheStreet Ratings team rates LIFE TIME FITNESS INC as a Buy with a ratings score of B+. On Wednesday, shares of Life Time Fitness, Inc. (NYSE:LTM) advanced 12.12% to close the day at $54.30. Company return on investment (ROI) is 7.30% and its monthly performance is recorded as 8.53%. Life Time Fitness, Inc. (NYSE:LTM) quarterly revenue growth is 18.82%.