Commentary The strategy of "buying the dip" went on for months, with unrelenting hope that this was all surely temporary. The economy was opening; Congress was spending. The Federal Reserve surely wouldn't crash the markets before the November election. All will be well. No reason to panic.

Gresham's Law in action: The diminishing availability of physical gold from the market (per several different accounts in London) corresponds to the proliferation of fiat currency printing and paper gold derivatives. Since September the Fed has increased the size of its balance sheet by $414 billion or 11% in less than four months.

Lawrence Yun, chief economist for the National Association of Realtors, joins CNBC's "Power Lunch" to discuss why foreign buyers for U.S. homes are declining.