In summary, the new proposal by the NYSE eliminates the 5mm dollar minimum requirement for portfolio margining on accounts that do not hold OTC derivatives positions. The earlier filing in December was the basis for expanding the portfolio margining to narrow based indices and individual equities. I expect these rules to become effective sometime this summer. http://www.sec.gov/rules/sro/nyse/34-53577.pdf In the end, the optimum account types will be as follows: Standard Margin account, eligible for option writing to hold all zero margin âstrategy based positionsâ. This would be things like butterflies, calendars, condors, etc. Second âPortfolio Marginâ account to hold the rest and any defined strategy that includes stock. The portfolio margin account is subject to a $37.50 minimum charge for each option held, long or short. Iâm not sure if that aggregates at the instrument level or the account level. One other item I donât quite understand is a statement within this filing prohibiting âday tradingâ within a portfolio margin account. Does that mean if you have a positive gamma position you are restricted from scalping the gamma? Need more color on this. Maybe a securities attorney reading here can answer to this.