Wednesday, December 30, 2015

About today's awful Case-Shiller number

A month ago, David Stiff of Fiserve informed me, "in general, sales of bank-owned (REO) properties are included in the repeat sales pairs used to estimate the indexes if they occur at least 6 months after a previous arms-length transaction."

There are currently markets in which foreclosure sales make up 40 to 50 percent of all sales. These transactions are almost surely not representative of the housing stock, and so the CSI is currently a biased estimate of house price changes. I admire both Case and Shiller a lot, but they really need to fix this.

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