Kirk Kerkorian, whose Tracinda recently sold of a large chunk of its Ford holdings, is hardly alone. Business Week notes that the credit crunch has forced lots of billionaires and big-name executives to pare their stock holding, sometimes dramatically, at the worst possible time. Sumner Redstone, of Viacom and CBS, John Malone, of Liberty Cable, and Aubrey McClendon of Chesapeake Energy are all on the list. Peter Nicholas and John Abee, co-founders of Boston Scientific, recently made news for selling off nearly $300 million in stock, fallout from the Lehman mess. It many cases, the sales have been the result of margin calls. And a lot of the selling has been of shares of the exec's companies, which certainly doesn't inspire investor confidence. Many may be lamenting owning so much of a single stock, though a lot had no choice.

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