Net Asset Value Arbitrage
An investment strategy in which one takes advantage of a discrepancy in the net asset value between a mutual fund trading on two different exchanges. The net asset value of a mutual fund is calculated at the end of a trading day. However, because of differences in time zones, different exchanges close at different times. Thus, one example of NAV arbitrage involves buying a mutual fund in after-hours trading on one exchange on which the NAV has been set for the day at a certain price, and then selling it on an exchange that is still open and on which the same fund's NAV has not been set and is trading at a higher price. It is also called stale price arbitrage.