How do I buy contracts for the YM Dow30-mini on margin? My backtest is buying the whole contract when it should buy the initial margin at $3430, and an intraday maintence $2744.  I have been trying to Set the Brokerage for an IB Margin account and the Future for the Pattern Day Trading function. I am not noticing any difference in the backtests. How am I supposed to deal with margin?|0|1|0|1|0|1|0|0|1|0|0|1|0|1|0|1|0|0|0|1|0|0|0|1|0|0|0|0|0|0|1|0|0|0|1