Cash markets are infinitely easier to trade because there is no forward exposure. When you trade on the futures exchange, you are not only taking on spot exposure, but you are also exposed to fluctuations in the forward market. This is due to the fact that a futures price has two distinct components. A cash price, equivalent to the cash price quoted over the counter, and forward points that are either added to or subtracted from the spot price. The cash market is for a constant two days forward settlement.
The cash market turns over daily volume equivalent to 1.5 trillion dollars and growing. The currency futures market turns over a very small percentage of that amount and is shrinking. By trading in the cash market you are trading where more than 95% of the major currency players choose to execute their business. This translates into a much-reduced rate of slippage as the major players in the cash market can absorb much larger sizes than a local on the IMM floor.
The cash market is open 24 hours a day, starting Sunday at 16.00 ET and ending Friday afternoon at 1630 ET. The official futures session begins at 0820 ET and ends at 1500 ET. While the GLOBEX system now offers after hours trading, the liquidity is not good.
lifted the above, pro's, cons.
Fx.