State Street unrealized losses climb, stock falls Tuesday January 20, 2009, 10:16 am EST BOSTON (Reuters) - State Street Corp (NYSE:STT - News), the world's largest money manager for institutions, said quarterly earnings fell sharply and unrealized losses jumped in its commercial paper program and investment portfolio, sending its shares tumbling 50 percent. http://finance.yahoo.com/news/State-Street-unrealized-rb-14102646.html