The Banco Central Do Brasil announced measures to discourage dollar shorting in order to cap a persistent rally of its currency, the Real. The Bank will require that banks with short US dollar positions hold 60% of the value of short positions greater than $1 billion in non-interest bearing deposits at the central bank. The Banco Central do Brasil had previously required banks to hold 60% of the value of short positions greater than $3 billion on deposit. The Brazilian Real has appreciated 20% against the US dollar over the past two years.