@gmtrader1 Thanks for your reply, in Part 1V of 3115, Section 481(a) Adjustment, it not only ask you to enter the amount of adjustment, but also asked to attach a summary of computation and explaination of the method use to determine the adjust ment, any idea how should we go about it? is a spread sheet showing all the open positions at year end which shows the unrealized gain/loss at 12/31 to be used as MTM suffice or there's any specfic format of that summary that IRS would be looking for?
