Another option spread trading advantage is that traders are almost invisible to the market. If I decide to go long and buy a lot of calls on Alphabet, Inc. or copper futures, my trades, and trades of other traders, are aggregated and reported. Other investors can see in which direction the market is moving and adjust their own trading accordingly. Therefore, large volume of calls or puts can have a significant impact on the direction of the overall market. However, through options spread trade I can go both long and short in the same market and not affect the direction of that market.