Save for later Print Download Share LinkedIn Twitter A market steeped in "irrational exuberance" tested credulity Monday with October futures jumping 56.6¢ to close at $5.706 per million Btu on the eve of expiration. The contract traded in a $5.176-$5.851 range. The last time the contract settled close to this mark was in winter 2010 after a major arctic blast sent storage falling at a clip. The difference now is prices are rising in anticipation of a cold winter, which would cause supply shortages with production idling between 91 billion-93 billion cubic feet per day and LNG exports running full out at around 12 Bcf/d. The 12-month strip rose 34.1¢ to $4.866; the 2022 calendar strip rose 24.5¢ to $4.454 (Futures contracts).