Wed Jun 19, 2013 4:35pm EDT. * Shares tumble after Fed chief signals stimulus could be pared back. * Fed maintains pace of bond purchases for the present.

MONTREAL - Telecom giant VimpelCom has withdrawn its bid to acquire full ownership of Canada's Wind Mobile, leaving the founder of the small wireless company the option of buying it back.

Canada's largest grocer is trying out a new discount small-store format in a bid to attract more customers in urban areas. Loblaw Cos.

PARIS - A�roports de Montr�al said Wednesday at the Paris air show that it will build an 80,000-square-foot facility in Mirabel in the next six months for $9.5 million and will lease it to French-based firm Aerolia Canada Inc. for up to 30 years.

Canada's growth outlook appears to be stronger than previously thought, thanks to an improving trade picture and the strength of corporate balance sheets, economists at the Royal Bank of Canada said Wednesday.