In a futures market, to create a situation where other people have between them contracted to deliver more of a good or security than is available. However high a price has to be agreed to obtain such contracts, the holder can make a large profit by forcing the counter-parties who cannot deliver to pay to be released from their contracts. In a commodities market, to buy and hoard a large amount of commodity sufficient for the price to be manipulated. Attempts to create a corner may fail if a high price brings in supplies from unexpected sources.