” NOGUCHI: Dennis Kelleher advocates for even stronger controls. He’s president and CEO of Better Markets, a nonprofit group, and he says JPMorgan’s loss is exhibit A for why greater trading restrictions are necessary.

DENNIS KELLEHER: If they have no idea, as they admit, what was going on, who knows what else they don’t know about. And equally important, what about the other too-big-to-fail banks? Because if it can happen at JPMorgan, it can happen anywhere.

NOGUCHI: Stronger regulations, Kelleher argues, are simply a way to protect Wall Street from itself. “

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