Some investors are worried about potential disruptions at Quebecor Inc. following the return of former CEO Pierre Karl Péladeau to the company, though such concern is overblown, said Barclays Capital analyst Phillip Huang. “We believe the stock's unsurprising negative reaction on the news reflects investors' concerns that there will be disruptions to the four years of disciplined execution under professional management, after Mr. Peladeau had stepped down as...