if you could trade only trade 4 futures contracts in North America, which ones would they be? (assuming you had an edge in each, a stretch, i know). I'm considering this question myself; I'm looking to diversify my trading away from soley the ES, so non-correlation would be key in my case. I don't plan to tackle four all at once and start trading willy-nilly, but will begin watching, studying, and backtesting my strategies on a few new markets. Here are my thoughts so far... 1- ES (I already trade it) 2- 30 year T-Bond futures 3- A metal (Gold or Silver) 4- A currency (Probably Yen or Swiss Franc) The thing that makes this difficult is that correlations have been increasing across the entire spectrum over the last few years. I'de appreciate anyone's thoughts/suggestions. Thanks all.