Exclude account from balance

On the account page, it would be greate to exclude a specific account from the total balance. Why?

Because when I add a transaction for the stock market (if it have been up or down in the end of every month), I do a transaction from or to the stock account from or to the fake account (so this isn’t handled as a income or cost). So far so good. But this fake account is still added to the total balance. If we could exclude this, then you can track you stocks return in an easy way.