Pimco bond chief Bill Gross said he and other big investors are avoiding buying bank debt until the Treasury Department takes steps to shore up the financial system.

"We're sort of full," Gross said in a CNBC interview. "To be fair and not to talk out of school, we have clients, we have contacts around the world and basically they're sitting on their hands as well. They're full as well and we're waiting for something to happen. What that means basically is we need a balance sheet, we need somebody else's balance sheet. That means buying power."