The Barclays Back to School Conference kicked off earlier this week - a three-day event that saw company executives gather to discuss their plans and outlook with investors and analysts. Manufacturers participating in the event included PepsiCo, General Mills, Mondelez International and Hormel Foods. Elsewhere, Delhaize named ex-Metro Group executive Frans Muller as its new CEO - and also announced the head of its US business, its largest market, would leave the company.