This article describes the mutual dependence between the press and the world of the stock exchange in the 19th century. Through an analysis of Zola’s novel Money, it shows how the newspaper imposes its law upon the world of credit, and how, at the same time, the bank operates a complete seizure of the management of the main press titles. The analysis proposes to see in the Zolian novel a complex representation of this consanguinity of the serialized text and of credit – two universes which share three main characteristics : materiality (use of paper), publicity (which makes deals efficient), and periodicity (as the stock exchange’s activity is periodic too). Published in serial form in a newspaper famous for its reports on the stock exchange, Money develops on two accounts the confusion of the roles which link the financier, “poet of the million”, and the novelist, whose contribution is to make the readers loyal to the banks owning the title.