October 2021; it also compares the global gas benchmarks, Henry Hub, TTF, NBP and JKM. The merger of the German NCG and GPL … rankings and has increased both its 'net' and 'gross' churn rates; it is a mature and very liquid hub. At a global level, Henry … Hub is the most liquid traded benchmark gas hub. TTF (and NBP to a lesser extent) is an important benchmark in its own …