As the government struggled to reach an agreement on raising the debt ceiling, the U.S. Treasury's cash balance fell to $74 billion this week. That's less than the $76 billion that Apple now has in cash. To be fair, comparing Apple's cash reserves with the Treasury's is not exactly apples to apples. Apple's billions are essentially the funds in its bank accounts, while the federal number represents the amount of money the government has left before it hits the legal debt limit - a figure that can be changed by Congress. At about $362 billion, Apple is the second-largest company in the world by market value (behind Exxon Mobil Corp. at $395 billion) - big by any standard, but still far smaller than the U.S. government, which will spend close to $3.8 trillion this year, 10 times what Apple is worth. Still, Apple's reasons for keeping such a giant cash stockpile may well be related to worries about the stability of the U.S. government's finances. One of the reasons U.S. companies have amassed so much cash is that it provides them financial flexibility in times of heightened uncertainty," said Laurie Simon Hodrick, a professor of business economics at Columbia University's business school. "It might seem ironic, but as the risk of a government default grows, bringing with it the specter of higher interest rates, the incentives for firms to finance with internally generated cash grows as well."

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