This thesis explores the opportunities of arbitrages between the spread of the Taiwan stock index futures traded in Taiwan Stock Exchange and the MSCI Taiwan futures traded in Singapore International Monetary Exchange. By deriving an approximated equilibrium arbitrage price formula and using data covering the period from 8/1/2002 to 12/30/2005 to compute the spreads. The computed results have shown modest arbitrage profits exist. However, the spreads have rapidly shrink during the year 2005, implying that the two markets converge gradually