Traders work in front of a trading board showing Shutterstock Inc on the floor of the New York Stock ExchangeAn American who received this 12 months’s Nobel Prize for economics believes sharp rises in fairness and property costs might lead to a perilous financial bubble and could finish badly, he advised a German magazine. Robert Shiller, who gained the esteemed award with two different American citizens for research into market costs and asset bubbles, pinpointed the U.S. stock market and Brazilian property market as areas of situation. However in many international locations stock exchanges are at a excessive degree and prices have risen sharply in some property markets,” Shiller instructed Sunday’s Der Spiegel journal. “I’m most worried about the growth in the U.S. inventory market.