ReutersState Street Shares Cut In Half After Company Outlines New RisksCNNMoney.com - 37 minutes agoBOSTON (Dow Jones) -- State Street Corp.'s stock was down 50% on Tuesday on concerns the company may have to bring troubled investment vehicles onto its balance sheet, a move that could force it to raise capital and potentially dilute shareholders.State Street shares plummet on 2009 outlook The Associated PressCommentary: State Street's results surprise the market, but not ...