Emulex Corporation (NYSE:ELX) was downgraded by research analysts at DA Davidson from a “buy” rating to an “underperform” rating in a report released on Thursday. Emulex Corporation (NYSE:ELX) stock performance was -30.63% in last session and finished the day at $4.96. Traded volume was 13.28million shares in the last session and the average volume of the stock remained 869.58K shares. The beta of the stock remained 2.21. Emulex Corporation (NYSE:ELX) insider ownership is 1.80%.

EXCO Resources Inc (NYSE:XCO) was downgraded by stock analysts at RBC Capital from a “sector perform” rating to an “underperform” rating in a report issued on Thursday. EXCO Resources Inc (NYSE:XCO) dropped -6.30 percent to $5.95 Thursday on volume of 9.32million shares. The intra-day range of the stock was $5.91 to $6.23. EXCO Resources Inc (NYSE:XCO) has a market capitalization of $1.62billion.

Helmerich & Payne Inc (NYSE:HP) was downgraded by equities researchers at Howard Weil from a “sector outperform” rating to a “sector perform” rating in a research report issued on Thursday. Helmerich & Payne, Inc. (NYSE:HP)’s stock on May 1, 2014 reported a decrease of -2.87% to the closing price of $105.53. Its fifty two weeks range is $57.11 -$117.00. The total market capitalization recorded $11.35billion. The overall volume in the last trading session was 1.51million shares. In its share capital, HP has 107.53million outstanding shares.

Clean Harbors Inc (NYSE:CLH) was downgraded by stock analysts at Robert W. Baird from an “outperform” rating to a “neutral” rating in a report issued on Thursday. Clean Harbors (NYSE:CLH) last released its earnings data on Wednesday, February 26th. The company reported $0.44 EPS for the quarter, missing the Thomson Reuters consensus estimate of $0.55 by $0.11. The company had revenue of $879.40 million for the quarter, compared to the consensus estimate of $894.41 million. On Thursday, shares of Clean Harbors Inc (NYSE:CLH) dropped -0.87% to close the day at $59.48. Company return on investment (ROI) is 6.00% and its monthly performance is recorded as 11.80%. Clean Harbors Inc (NYSE:CLH) quarterly revenue growth is 5.80%.