Also, feeder prices on the spot market have been moving higher.

In the last several years, the spot market has accounted for up to 65 percent of natural gas purchases.

This additional information is then available to traders in the spot market.

The action would take place on a daily spot market.

The development of the spot market made oil prices volatile.

Hence, both parties are better off than being in the spot market.

Prices on the spot market had an even wider range.

"We were forced out onto the spot market at the worst possible time," he said.

An increase in the price is immediately felt by the carriers, which buy their fuel on the spot market.

Some chemical companies say they have already seen slightly higher prices on the spot market.