Wall Street Week Ahead: A year of returns, all bef

By Chuck Mikolajczak NEW YORK (Reuters) - The S&P 500 stock index's stunning run since the start of the year has made many bullish analysts look conservative. As the benchmark S&P has roared to record highs this year with a gain of more than 11 percent, many Wall Street analysts have been forced to concede their prior targets were too low and adjust accordingly. In fact, it has taken less than four months for the S&P to surpass year-end 2013 targets of about two-thirds of the strategists polled by Thomson Reuters in December. ...