Bloomberg The US slapped duties on Bombardier Inc.’s showcase commercial jet for the second time in as many weeks, upholding Boeing Co.’s case that its Canadian competitor sold planes at less than fair value. The Commerce Department imposed a preliminary import duty of 80 percent on Bombardier C Series aircraft based on its finding, according to an emailed statement. The …

Bloomberg Sycamore Partners is betting on the ailing retail sector at a time when other investors are shying away. The buyout firm, which bought Staples Inc. last month, is trying to raise $4 billion for its biggest fund yet, two people with knowledge of the matter said. It’s planning to finish raising the money in January, one of the people …

Bloomberg South African Airways has agreed to hire a restructuring expert to help turn around the state-owned airline and meet conditions laid down by lenders to roll over debt, according to two people familiar with the matter. Incoming Chief Executive Officer Vuyani Jarana met with British industry veteran Peter Davies last month and he agreed to help try return SAA …