Hedge fund titan Ken Griffin says Japan's bond-market rebellion is a warning sign that the US needs to shape up its finances

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• Citadel chief Ken Griffin thinks the US got a big warning from Japan's bond market this week.
• Japanese bond yields hit a record high as investors fretted over the nation's growing deficit.
• The same dynamic could play out in the US if it doesn't get its finances in order, he said.

The bond vigilantes could make a comeback soon.

That's the big message Citadel CEO Ken Griffin thinks the US got this week.

Speaking...