Mismarking in securities valuation takes place when the value that is assigned to securities does not reflect what the securities are actually worth, due to intentional fraudulent mispricing. Mismarking misleads investors and fund executives about how much the securities in a securities portfolio managed by a trader are worth (the securities' net asset value, or NAV), and thus misrepresents performance. When a trader engages in mismarking, it allows him to obtain a higher bonus from the financial firm for which he works, where his bonus is calculated by the performance of the securities portfolio that he is managing.