Big U.S. banks, including JPMorgan Chase & Co JPM.N, Citigroup C.N and Wells Fargo WFC.N, gained between 1.2% and 3.4% after losing ground in the previous session. A Reuters poll of economists showed that the U.S. Consumer Price Index (CPI) likely increased by 0.4% last month after accelerating 0.5% in January amid sticky rental housing costs. The yield on two-year Treasury notes, which best reflect interest rate expectations, tumbled below the 4% mark on Monday and is currently at 4.3%.FEDWATCH Regional bank stocks rebounded in premarket trading.