QUOTE(birdman13200 @ Aug 6 2014, 09:58 PM)
I did use this formula quite same time, it is only correct for a single transaction. If you hv few rounds of buy/sell transaction, the result will not be correct anymore. I would suggest use excel formula "XIRR", it can accurately calculate the annualized return.
For a single transaction, above formula and XIRR will give the same result.
I don't summarized and grouped all the purchases of the same fund as like in PMO... meaning each purchase/switch/transaction of the same fund is a line on its own. This way I can see what's the return on each purchase... if a series of purchases were made at various dates, I can tell instantly which purchase is giving negative or positive returns, or is the returns (annualized) moving up or down...
Another thing to make the figures work correctly using my method is how to handle the distribution (if any). The distribution units are added proportionately to each of the purchases.
Using XIRR or IRR (internal rate of return), is more towards cash flow... which don't really serves my purpose of monitoring each purchase on its own since I do some 'market timing'... and will have to re-structure the file and the fields every differently; and will have to change the purchases and distributions to negative figures for the formula to work.
The beauty of my file is that is looks very similar to what you would see in the account enquiry page in PMO, and the purchases of the same fund is not grouped into one line... format and highlight each category of funds in different colours, plus sub-totals for each category... and voila... all the highlighted info in one page!