The world's No. 1 online social network became the first American company to debut on the public markets with a valuation of more than $100 billion. About 234 million shares of Facebook stock owned by company employees were eligible for trading Monday. In Germany, Deutsche Bank (NYSE:DB) reported a $795 million third-quarter profit Tuesday but warned the economic environment remains uncertain and presents challenges in the future. Meanwhile, Swiss bank UBS (NYSE:UBS) announced Tuesday it plans to cut up to 10,000 jobs as part of a restructuring plan at its investment bank unit.