The stock market rebounded this week after seesawing on concerns about U.S.-China trade, the ongoing federal government shutdown, and credit. For the week, the S & P 500 and tech-heavy Nasdaq jumped 1.7% and 2.1%, respectively, after each lost more than 2% the prior week. Late in the week, trade and the shutdown took a backseat to worries about regional banks, which spilled into the market. Zion and Western Alliance both disclosed bad loans during a two-day stretch, sparking a selloff in financial names on ...