Long memory, and more precisely fractionally integration, has been put forward as an explanation for the persistence of shocks in a number of economic time series data as well as to reconcile misleading findings of unit roots in data that should be stationary. Recent evidence suggests that long...

Both prices and the volatility of storable agricultural commodity futures contracts have been rising since 2005 and particularly since 2007. This paper aims to answer two principal questions: (i) How has the behavior of these futures prices over time and across maturities changed with the rise...

This paper investigates whether the assumption of Brownian motion often used to describe commodity price movements is satisfied. Using historical data from 17 commodity futures contracts specific tests of fractional and ordinary Brownian motion are conducted. The analyses are conducted under the...

Default risk associated with forward contracts can be substantial, yet these financial instruments are widely used to hedge price risk. An objectively priced exit option on the forward contract would help reduce the likelihood of litigation associated with contract default. A method is proposed...

Land is the most important agricultural asset. Income risk due to farmland price volatility creates economic hardship for rural communities. Although inflation explains much of the farmland valuation problem, it remains to some extent a puzzle. We use wavelet-based statistical methods supported...

Economists who deal with time-series data usually take the unit root test as the ‘prerequisite’ test for a Brownian motion. It is typical for any researchers to apply a battery of well-known unit root tests to their models to confirm stationarity in the model specification. Nonetheless,...

Commodity cash and futures prices have been rising steadily since 2006. As evidenced by the April 2008 Commodity Futures Trading Commission Agricultural Forum, there is much concern among traditional futures and options market participants that the usefulness of commodity derivatives has been...

We estimate a model of common and commodity-specific, high- and low-frequency factors, built on the spline-GARCH model of Engle and Rangel (2008) to explain the period of exceptionally high price volatility in commodity markets during 2006-2008. We find that decomposing realized volatility into...

This article investigates the time series relationship between equity and crude oil markets using option-implied risk-neutral moments. We recover daily time series of constant-maturity risk-neutral volatility (RNV), skewness and kurtosis using options data for the S&P 500 and WTI oil futures...