Soybean prices closed at a 2-week high as financial investors shed bearish bets amid an improved demand outlook for the crop. Concerns that Brazilian truckers may resume earlier protests and a delayed harvest in Argentina have boosted hopes that overseas buyers could turn to the U.S. for soybean supplies instead. While South America work stoppage by truckers in Brazil in February stymied the flow of soybeans to that country's ports, threatening timely exports from its coasts.