Average price x quantity -- market price x quantity and you will get paper (unrealised) gain/loss. This method does not take into account of dividends. The different formulas are used for various purposes, XIRR (Extended internal rate of return), TWR(Time-weighted return), IRR(internal rate of return)... All depends what you want to know.
Average price x quantity -- market price x quantity and you will get paper (unrealised) gain/loss. This method does not take into account of dividends. The different formulas are used for various purposes, XIRR (Extended internal rate of return), TWR(Time-weighted return), IRR(internal rate of return)... All depends what you want to know.