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Working Paper
Is there private information in the FX market? the Tokyo experiment
It is a common view that private information in the foreign exchange market does not exist. We provide evidence against this view. The evidence comes from the introduction of trading in Tokyo over the lunch-hour. Lunch return variance doubles with the introduction of trading, which cannot be due to public information since the flow of public information did not change with the trading rules. Having eliminated public information as the cause, we exploit recent results in microstructure to discriminate between the two alternatives: private information and pricing errors. Three key results ...