reservations about the impact of foreign speculators on both expectedquot; returns and market volatility. We propose a cross … depositary receipts country funds and other financial instruments, in an extranational market and market volatility in emerging … statistically weak. The effects on volatility and correlation are less robust.quot …

reservations about the impact of foreign speculators on both expected" returns and market volatility. We propose a cross … receipts country funds and other financial instruments, in an extranational market and market volatility in emerging equity … volatility and correlation are less robust." …

This paper evaluates how different types of speculation affect the volatility of commodities' futures prices. We adopt …-2010 analyzed at weekly frequency. Using GARCH models we find that speculation significantly affects volatility of returns: short … term speculation has a positive and significant impact on volatility, while long term speculation generally has a negative …