Big U.S. banks were mixed, with JPMorgan and Citigroup C.N flat, while Wells Fargo WFC.N edged 0.1% higher. Big banks including JPMorgan Chase & Co JPM.N and Morgan Stanley MS.N threw a $30 billion lifeline to First Republic FRC.N on Thursday, calming some nerves and helping Wall Street's main indexes notch gains, with the tech-heavy Nasdaq .IXIC rallying over 2%. Investors are now looking ahead to the Federal Reserve's interest rate decision, due next week, to gauge how it will tame inflation amid a banking crisis.