UBS Securities Trading believes the decline in US stocks may have come to an end, setting the stage for a year-end rally. Stocks tumbled last week as investors wavered over expectations of further Federal Reserve easing and retreated from crowded artificial intelligence trading. The S & P 500 and Nasdaq 100 are down about 4% and 7% respectively from their record highs set in late October, both falling to their 100-day moving averages. But as the benchmark index in this key technology...