Wall Street is likely to make a strong showing in the final week of 2009 as the bulls gear up to toast the first annual advance for US stocks in two years on hopes of more economic stability in 2010. The US stock market's resiliency since the March bottom has put investors in the mood to celebrate. The trading week will be cut short by the New Year's Day holiday on Friday, when US financial markets will be closed. The S&P 500 is poised for what could possibly be its best year since 2003 - in sharp contrast to a year ago, when stocks plummeted in the fallout from the mortgage crisis and panic rocked investors as 2009 got under way. Even though no “all clear” has been sounded for the US economy, equity strategists said stocks were poised to add to recent gains next week and build a base for a solid start to 2010 as optimism about the recovery grows. There's an expectation now that economic indicators will keep showing improvements in key areas like housing and the labor market. “There's an upward bias,” said Alan Lancz, president of Alan B. Lancz & Associates Inc, an investment advisory firm, based in Toledo, Ohio. “Economic numbers have been good. It's been an ideal situation for equities as there aren't that many other alternatives. I think the smarter money is going into equities.” The benchmark Standard & Poor's 500 Index started out November in a tight trading range. But by Christmas Eve, when stock trading ended early for the holiday, the S&P 500 had climbed to a 14-month closing high as investors bet the recovery will be strong enough to justify loftier stock valuations. US markets are closed on Friday for Christmas. The S&P 500 is up 66.5 percent from a 12-year closing low set on March 9. Its trading levels now imply a forward price/earnings ratio of 15.5, according to Thomson Reuters data. And oh, what a difference a year makes. The S&P 500 ended 2008 down 38.5 percent. But for 2009, the S&P 500 is up 24.7 percent - a gain that puts the broad market index on track for what could be its best year since 2003. An even stronger advance next week could put the S&P 500 in position for its best year since 1998. For 2009, the Dow Jones industrial average is up 19.9 percent and the Nasdaq Composite Index is up 45 percent. “The market is telling us that the economy is a lot stronger than people are giving it credit” for, said Cleveland Rueckert, market analyst at Birinyi Associates in Stamford, Connecticut. Although there might be some profit-taking in the final days of the year, the stock market's underlying tone should still be positive, Reuckert added. “In our view, the market is going to go higher.” The ritual of window dressing should also support the stock market in the coming week, according to analysts. That strategy involves selling stocks with large losses and buying winners near the end of the year or quarter to improve a portfolio's performance. “The fact that it's year-end is going to cause a fair amount of volatility on probably relatively light volume,” said Michael James, senior trader at regional investment bank Wedbush Morgan in Los Angeles. “I would expect the bias would be to the upside toward the end of the week.” Volatility may be enhanced in a holiday-shortened week, when the US stock market will be open for only four days. And volume may be exceptionally light, with many market participants taking time off through New Year's Day. Economic and corporate calendars are light next week. But there are a few items worth keeping an eye on, including the US Treasury's auctions of $118 billion of two-year, five-year and seven