The ones who didn't make stupid loans to people who couldn't aford them.
Most banks aren't needing help. The great thing about free markets is that they're free. Millions of different decisions being made by millions of different people. That's Capitalism's strength over Socialism, it's defuse and decentralised. Those traits make it incredibly robust and resistant to damage. It's the weed that refuses to be stomped out, while Socialism's the flower that can't survive on its own without constant tending.