Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

What's so hard about a mutual fund manager pricing their mutual fund?
Given that a mutual fund manager knows, at the end of the day, precisely how many shares/units/whatever of each investment (stock, equity, etc.) they own, plus their bank balance,  It is calculating this given. There are multiple orders that a fund manager requests for execution, some get settled [i.e. get converted into trade], the shares itself don't get into account immediately, but next day or 2 days later depending on the exchange. Similarly he would have sold quite a few shares and that would still show shares in his account. The bank balance itself will not show the funds to pay as the fund manager has purchased something ... or the funds received as the fund manager has sold something. So in general they roughly know the value ... but they don't exactly know the value and would have to factor the above variables. That's not a simple task when you are talking about multiple trades across multiple shares.