Basis is the difference in the price of a commodity in a particular cash market and the underlying futures market. As such, basis varies across geographic areas according to local supply and demand factors. Lower supply or higher demand for a commodity in a local cash market relative to the overall price level represented by the futures market is reflected in higher (i.e., stronger, or more positive) basis values. Conversely, higher supply or lower demand results in lower (i.e., weaker, or more negative) basis values. The past several weeks have resulted in favorable basis changes for cattle feeders, despite price levels generally becoming less favorable.