One way to reduce risk is to use micros. We use the Portfolio Calculator to show how each Micro represents 1/10th of an emini contract or 0.1. We show how you can trade one contract on the Micros with a 10K account.
There has never been a time when you can trade 30 different futures trading strategies with just a 10k account. If don't have 100K to trade the full Stock Index Portfolio it is better to scale down and trade the Micros rather than to reduce diversity and trade less strategies.
Every Micro represents 10K so if you want to allocate 50K to the Stock Index Portfolio, you can do so by trading 5 Micros or 0.5 in the Portfolio Calculator.
We discuss how you can scale the number of contracts to your risk tolerance and go over the results of 1 Micro, 5 Micros, 1 Emini, and 10 Eminis.