Why not create the ability to ask money for additional funds from the "Hollywood Banks" charging interest; let's say the bank will charge twice the interest it paids. Also put a limit to how much it can lend like 5 % of your portfolio or a fixed amount or a combination of the two so people with large port can not exploited. Also some stoping conditions and a force due date for payment are needed so people can suffer the consequences of abusing this but at the same time avoid a negative portfolio or virtual bankrupcy. But it will be cool if you can actually go negative , the problem is what to do with that player then, something like reset the account to 2 millions. In mor e than one ocassion I am in need of cash because I have everything invested. Some times in things that i can not sell because they are undervalue like some of the blockbuster warrants that already meet their target price so it will be stupid to sell now, one thing is to loose frute earnings another is to sell below current value.