Ownership and competition in the banking sector are policy concerns around the world that are rarely comprehensively examined. For 131 countries and 13 years we match bank ownership with over 50,000 bank-year estimates of individual bank market power. At the individual bank level, ownership does...

We present the bargaining set of an economy, where trades among groups of individuals are conducted via the Shapley-Shubik mechanism. Then we prove that in atomless economies the allocations resulting from this equilibrium notion are competitive.