5 things to know before the stock market opens Friday

Here are the most important news items that investors need to start their trading day:

It’s been a volatile few days, but the major U.S. stock indices were up for the week heading into Friday’s session. That could change thanks to new upheaval in the global banking system. Shares of Deutsche Bank, which experienced a sharp rise in credit default swaps, weighed on European markets. U.S. futures showed the same strain Friday morning. Elsewhere, Treasury Secretary Janet Yellen played a little cleanup Thursday after she said the government wasn’t considering a universal backstop of all U.S. deposits the day before. “The strong actions we have taken ensure that Americans’ deposits are safe. Certainly, we would be prepared to take additional actions if warranted,” she told lawmakers Thursday. Follow live markets updates.