The protesters marched along Market Street this afternoon, stopping in front of Bank of America, Charles Schwab and Wells Fargo, organizers from ReFund California said.
Six activists went inside a Chase Bank branch in the 500 block of Market Street with sleeping bags and pillows and prepared to stay, organizers said.
According to police, officers repeatedly warned the protesters they would be arrested if they refused to leave.
The activists refused to leave and were arrested for trespassing, police said.
The protesters were cited and released.