... stimulates arbitrage activity, which, in turn, enhances market efficiency. Market efficiency also varies with information environment. The results show that stocks with greater information-based trading exhibit higher level of efficiency. Finally, market structure influences market efficiency. New York Stock...

...Milind Sathye The paper uses annual and pooled data on Australian banks for the years 1994 to 1996 to test the two competing hypotheses of market structure and performance; namely, the structure‐conduct‐performance hypothesis (in concentrated markets firms derive higher profits due to collusion...