NAV (Net Asset Value) Return is the change in the value of an investment over time, typically calculated on a per-share basis. It is the total value of an investment divided by the number of shares outstanding.The calculation of NAV return is (Ending NAV – Beginning NAV) / Beginning NAV.Market return, on the other hand, is the change in the value of a stock or stock market index over a given period of time. It is calculated as the percentage change in the value of an investment or index.The main difference between NAV return and market return is that NAV return is specific to a particular investment, while market return is the overall change in the value of a stock or stock market index.In general, NAV return is the return that an investor earns on an investment, while market return is the return that an investor earns on the stock market as a whole. NAV return can be used to measure the performance of a specific investment, while market return can be used to measure the performance of the stock market as a whole.