BUZZ-Qinetiq: top of the Stoxx after Berenberg upgrade

** Defence engineering company Qinetiq up 10 pct after Berenberg upgrades to "buy" from "hold"

** Broker says stock is "unjustifably oversold" (-12 pct in the last week) after a profit warning at peer Ultra Electronics (Frankfurt: 909716 - news) hit sentiment in the sector

** Says Qinetiq occupies a niche role in the defence sector (mainly R&D) and is highly cash generative, insulating it from sector-wide pressures

** Best day for the stock since November 2015, top riser on Stoxx 600