Varonis Systems (NASDAQ:VRNS) was upgraded by Barclays from an “equal weight” rating to an “overweight” rating in a research note issued on Friday, Stock Ratings Network reports. Varonis Systems Inc (NASDAQ:VRNS) stock performance was -4.72% in last session and finished the day at $25.64. Traded volume was 270,050.00million shares in the last session and the average volume of the stock remained 701.55K shares. Varonis Systems Inc (NASDAQ:VRNS) insider ownership is 18.40%.

Analysts at Davidson upgraded shares of Cogent Communications Group Inc. (NASDAQ:CCOI) to a “buy” rating in a research note on Monday, March 3rd. Cogent Communications Group, Inc. (NASDAQ:CCOI) rose 1.22 percent to $34.13 Friday on volume of 443,190.00million shares. The intra-day range of the stock was $33.56 to $34.87. Cogent Communications Group, Inc. (NASDAQ:CCOI) has a market capitalization of $1.62million.

A.O. Smith Corp. (NYSE:AOS) has received an average rating of “Buy” from the ten brokerages that are covering the stock, Analyst Ratings.Net reports. A. O. Smith Corp (NYSE:AOS)’s stock on Apr 11, 2014 reported a increase of 1.41% to the closing price of $45.31. Its fifty two weeks range is $33.50-$55.18. The total market capitalization recorded $4.13billion. The overall volume in the last trading session was 838,403.00million shares. In its share capital, AOS has 91.39million outstanding shares.

Pinnacle West Capital (NYSE:PNW) was upgraded by investment analysts at Argus from a “hold” rating to a “buy” rating in a note issued to investors on Friday, TheFlyOnTheWall.com reports. On Friday, shares of Pinnacle West Capital Corporation (NYSE:PNW) dropped -0.40% to close the day at $54.78. Company return on investment (ROI) is 8.00% and its monthly performance is recorded as -0.27%. Pinnacle West Capital Corporation (NYSE:PNW) quarterly revenue growth is 3.97%.