BlackBerry (NASDAQ:BBRY) was upgraded by investment analysts at Oppenheimer from an “underperform” rating to a “market perform” rating in a note issued to investors on Tuesday, Analyst RN reports. BlackBerry Ltd (NASDAQ:BBRY) stock performance was -3.28% in last session and finished the day at $ 7.67. Traded volume was 150.00 million shares in the last session and the average volume of the stock remained 16.18 million shares. The beta of the stock remained 1.23. BlackBerry Ltd (NASDAQ:BBRY) insider ownership is 15.01%.

Comtech Telecomm. Corp. (NASDAQ:CMTL) announced that, as of May 5, 2014, none of its 3.0% Convertible Senior Notes due 2029 (the “Notes”) remain outstanding. The Company utilized approximately $150.0 million of its cash and cash equivalents to redeem the majority of the Notes, and approximately $50.0 million principal amount of the Notes were converted into 1,570,904 shares of the Company’s common stock. Comtech Telecomm. Corp. (NASDAQ:CMTL) dropped 0.70% percent to $ 30.99 yesterday on volume of 138,214 shares. The intra-day range of the stock was $ 30.94 – 31.43. Comtech Telecomm. Corp. (NASDAQ:CMTL)has a market capitalization of $ 474.95 million.

Cempra Inc (NASDAQ:CEMP)) issued its quarterly earnings data on Tuesday. The company reported ($0.51) earnings per share for the quarter, missing the analysts’ consensus estimate of ($0.48) by $0.03, American Banking News reports. Cempra Inc (NASDAQ:CEMP)’s stock on May 6, 2014 reported a decrease of – 2.17% to the closing price of $ 9.03. Its fifty two weeks range is $ 6.57 – 15.39 . The total market capitalization recorded $ 299.81 million. The overall volume in the last trading session was 280,968 shares. In its share capital, Cempra Inc (NASDAQ:CEMP) has 33.21 million outstanding shares.

Aaron’s, Inc. (NYSE:AAN)) was upgraded by Zacks from a “neutral” rating to an “outperform” rating in a research report issued to clients and investors on Wednesday, ARN reports. On Friday, shares of Aaron’s, Inc. (NYSE:AAN)advanced 1.65% to close the day at $ 30.79. Company return on investment (ROI) is 9.60% and its monthly performance is recorded as 0.98%. Aaron’s, Inc. (NYSE:AAN) quarterly revenue growth is 13.91%.