Ito, Takatoshi; Yamada, Kenta; Takayasu, Misako; … - National Bureau of Economic Research (NBER) - 2012
Using the "firm" quotes obtained from the tick-by-tick EBS (electronic broking system that is a major trading platform for foreign exchanges) data, it is found that risk-free arbitrage opportunities--free lunch--do occur in the foreign exchange markets, but it typically last only a few seconds....