Stock market volatility has resulted in the utilities sector trading lower by 8 percent in 2018, according to Morgan Stanley — creating some buying opportunities for investors, as well as a call for investors to revise their bullish stance on one name. The Analyst Morgan Stanley's Stephen Byrd made the following rating changes: Xcel Energy Inc XEL upgraded from Equal-weight to Overweight with a price target lowered from $49 to $48.Pinnacle West Capital Corporation PNW upgraded from Underweight to Equal-weight with a price target lowered from $85 to $79.Eversource Energy ES downgraded from Overweight to Equal-weight with a price target lowered from $63 to $60.SourceStochastics are heading north, there is a good chance to break out the falling chhannel. $XEL, Xcel Energy Inc. / D Same here. $PNW, Pinnacle West Capital Corporation / D Stochastics are leaving the oversold zone. There is a chance for an upside. $ES, Eversource Energy (D/B/A) / D