The Iron Bank on “Game of Thrones” could make a lot of money hoarding dragonglass. And Samwell Tarly is sitting on a potential goldmine with his breakthrough cure for greyscale.

Most fans of the HBO hit series were enthralled on Sunday to see “Mother of Dragons” Daenerys Targaryen finally meet the resurrected Jon Snow. But as media writers, we mostly saw missed opportunities. Doesn’t anyone on this show want to make a bundle?

We discuss the Iron Bank’s investment strategies and Littlefinger’s long-game plotting on our weekly audio show, “The Wealth of Westeros.” Stream it here.

On Sunday’s episode, the fearsome Iron Bank of Braavos doubled down on its so-far money-losing commitment to the Lannister family, whose main asset is exhausted gold mines.