Is there a cap or limit maximum account size beyond which Andromeda could no longer be traded?
In theory no, however if your account is very large and you are trading large lots of multiple units / contracts per trade, liquidity could become an issue, particularly in the smaller markets. We have taken this into account and hence have tried to choose the largest and most liquid markets for our recommended portfolios. You would have to run into the millions and millions of dollars before you may experience execution problems due to insufficient size and liquidity for the volume of contracts you are trading. Should you customize your own portfolio and add markets not included in our recommended portfolios it is therefore important that you take trading volume size and liquidity factors into consideration. Your broker should be able to provide you with the necessary information on this matter to determine effective trading feasibility based on the trade volume.