Moody's Investors Service in March reported that U.S. non-financial companies had $4.45 trillion in cash at the end of 2012, up 10 percent from late 2011. Of that cash, tech companies hold about 38 percent of the total, or $556 billion.
By the end of 2012, the amount of cash those companies stockpiled overseas reached $840 billion, or about 58 percent of their total cash holdings, Moody's reported. That was up from $700 billion at the end of 2011.
How much cash individual companies are holding varies according to how it is measured and who is doing the measuring.