Hi, I tried this on the IB Simulated Account: CSCO Sold 1 May 27.50 Call Sold 1 May 25.00 Put Sold the spread for a net credit of 0.73. I looked up the margin of this spread and it said it was only $520.80. Is that right? Are they using the new Portfolio Margin since the Simulated account is an $100,000 account? If it is, how much would the margin be for an account less than $100,000? 50% of call value + 50% of put value?? Thank you. Daytrader85