Recent months have seen daily price rises and falls of 1-2%.
The CPINu, in contrast, is based on daily price reports from the entire country.
Mr. Curnutt measures the average correlation of daily price moves over a rolling three-month period.
Second, it imposes a strict limit on daily price movements, which may not exceed 2% in either direction.
But replacement cost is hard to measure, and is of little help in explaining daily price movements.
"One could settle the shares any day based on the daily price in London, so there is liquidity.
At Colt, I did cut the position by three quarters because the daily price drops became too wearing.
The standard daily price for checking a winter coat at Frankfurt is 50 euro cents, about 67 cents in the United States.
After the flash crash, the Securities and Exchange Commission moved quickly to apply a Band-Aid in the form of circuit breakers to limit daily price moves.
There is also evidence of deflation in the United States in daily price data collected by the Massachusetts Institute of Technology.
This covers the carbon-dioxide market in Europe, and the sulphur-dioxide and nitrogen-oxide markets in America, publishing daily price assessments for the leading contracts.
