Here’s my PNL today as of 2:30 EST. Should I be waiting till after hours to post? Anyway. Let’s look at an example trade to answer questions on what you risk and what’s your reward. Let's say I have $2,000 cash in my account. This really is only enough to open one contract at a time of MESM25 which requires $1,723.70 in margin. While my buying power is not used up, I do have to maintain a minimum buying power of $1,723.70. What's that mean for my total losses? $2,000 - $1,723.70 = $276.30. SO, let’s say I open a position at 5658.00, I can only afford to let it slide by around 56 points. If the market flushed to 5602.00, I'd likely get closed out of my position by Robinhood as they've said "Hey buddy, you don't have the margin required for this." Scale that math depending on the number of contracts you open. It doesn't need to get super complicated, I never trade with more than 4 to 5 contracts because that's what my account will tolerate and I have tight stop losses where I'm not really willing to lose more than $60 to $100 on a trade.