What is the minimum and maximum number of contracts I can trade?

The maximum number of contracts you can open varies for each Challenge.

Futures Classic

$20,000 Challenge: 10 micro contracts.

$150,000 Challenge: 5 standard/mini contracts or 50 micros. You can also combine standard/mini and micro contracts. For example, 3 standard contracts and 20 micros.

$200,000 Challenge: 7 standard/mini contracts or 70 micros. You can also combine standard/mini and micro contracts. For example, 4 standard contracts and 30 micros.

$250,000 Challenges: 10 standard/mini contracts or 100 micros. You can also combine standard/mini & micro contracts. For example, 7 standard contracts and 30 micros.

Futures Prime

$50,000 Challenge:  5 standard/mini contracts or 50 micros.

$100,000 Challenge: 10 standard/mini contracts or 100 micros.

$150,000 Challenge: 15 standard/mini contracts or 150 micros.

*Keep in mind, the lower your current balance is, the fewer contracts you will be allowed to trade.