To promote these aims the proposed mandatory separation includes both proprietary trading and market making. Differentiating these from one another would be difficult 11 and, if placed in different legal entities within the same banking group, some natural synergies might be lost. By avoiding the decoupling of proprietary trading and market making, the proposal differs from the Volcker Rule in the United States.
However, the proposed mandatory separation in the EU can take place within a banking group whereas the Volcker Rule prohibits proprietary trading from the entire banking group.