Basis

In a bullion fair-value context, basis is the observed local price minus a chosen model value. Global basis compares the local price against a converted global reference before landed costs, while import basis compares it against fair value after a cost profile (duty, premiums, financing) is applied.

Basis matters because it converts two separate prices into a single read of how stretched the local market is. A positive basis means local metal is trading above the model; a negative basis means below. Traders watch the history of the basis to judge whether the current gap is unusual or routine.

A gross basis can look large before costs, while the net basis after assumptions may shrink or even flip sign. Basis describes deviation, not a guaranteed convergence or captured profit, so it is read with the active cost profile and the freshness of each price leg in view.