The document summarizes the strong performance of the stock market in the first quarter of 2012, with the S&P 500 rising 12% which was its best start since 1998. Analysts attributed the gains to an easing of Europe's debt crisis, a strengthening global economy, rising US consumer sentiment, and supportive Federal Reserve policy. However, some warn that the market could falter later in the year as it has in recent years, due to potential risks like renewed European debt issues or a slowing US economy.