A system, method, software, and portfolios for managing risk in markets relating to a commodity delivered over a network are described, in which a market participant constructs portfolios of preferably liquid price risk instruments in proportions that eliminate the Spatial Price Risk for the market participant’s underlying position. The blend includes magnesium oxide and zinc borate. A lift is coupled to the support and operable to selectively cause the support to pivot between a first position and a second position.