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During the recent era, many emerging market economies have implemented unconventional policy measures to mitigate the effect of large swings in short-term capital flows on domestic business cycles. This paper focuses on a novel capital flow management tool, the reserve option mechanism (ROM) introduced by the Central Bank of Turkey, that allows banks to hold a certain fraction of their domestic-currency required reserves in foreign currency. The results suggest that, after the introduction the ROM (i) market expectations leaned towards a significantly lower volatility or skewness in the U.S. dollar/Turkish lira (USD/TL) relative to other emerging market exchange rates; (ii) controlling for a set of domestic and common external factors, the USD/TL expectations have exhibited lower levels of volatility, skewness and kurtosis; (iii) the higher the intensity of ROM (the fraction of ROM-based reserves in total …