The probability of informed trading measured with price impact, price reversal, and volatility

Contemporaneous and positive correlation between order flow and exchange rate is a stylized fact. I postulate that the order flow driven by informed trading has a significant price impact. I also do that little price reversal occurs in the subsequent period. The Markov-switching model provides probabilities of a significant price impact and little price reversal. I apply these probabilities to measure the probability of informed trading. The measure explains a greater share of the random walk component of price compared to other measures offered by previous studies.