Perhaps we can start looking for a bottom

I have long said that so long as the months supply of housing available for sale is rising, it is not possible to know then the housing market will reach bottom (in terms of price). But the months supply measure has fallen pretty substantially since this winter, from a peak of 11.4 months to a current rate of 9.4 months. The inventory needs to get down to 5-6 months before inflation adjusted prices become stable. But the derivative finally has the right sign.