William Blair adds to Pentair's (PNR +1.4%) gains after upping the shares to Outperform earlier,...

|About: Pentair Inc. (PNR)|By:, SA News Editor

William Blair adds to Pentair's (PNR +1.4%) gains after upping the shares to Outperform earlier, citing potential acceleration in earnings growth following the merger with Tyco’s (TYC +0.5%) flow control unit.