ET today, while shares of Wells Fargo (NYSE: WFC) and PayPal Holdings (NASDAQ: PYPL) traded roughly 5.4% lower. What happened Shares of several banks and financial stocks fell today, as investors brace for a recession that is looking more and more like a possibility considering the rising price of oil and high levels of inflation. "The rule of thumb I learned from auto industry economics in the 1990s is that if oil prices go up 100% in a one-year period, expect a recession," said Nicholas Colas, co-founder of DataTrek Research, according to CNBC.