JKM has traded at a persistent premium to TTF since the European storage rebuild slowed. The question for portfolio traders is whether the basis reflects a new equilibrium or simply a winter risk premium that will compress as Northern Hemisphere temperatures normalise.
Three factors argue structural: incremental Asian buyers are increasingly contracted at JKM-linked formulae; Panama and Suez routing risk imposes a freight premium on Atlantic-basin barrels; and Chinese second-tier importers are price-takers on the spot.
Two factors argue cyclical: European storage is full ahead of winter, dampening TTF spot; and 2025 US liquefaction additions will physically loosen the Atlantic basin once commissioned cargoes start to flow.
Our base case is a wider-than-historical but narrowing basis through 2026. Position accordingly on JKM-TTF spreads and watch the Panama auction price as the cleanest weekly leading indicator.