How to calculate your actual investment performance
A question we’re often asked is: What is my performance? If you’re like most people and you calculate your returns by dividing your account’s end value by its initial value, a method called simple rate of return (SRR), then you could be off, way off. Using SRR may be appropriate only if you deposited a lump sum into your account and made no additional deposits or withdrawals. That’s not true for most people who tend to make additional deposits, withdrawals, or both. Financial professionals prefer to use the time weighted return (TWR) method for assessing performance. TWR captures the performance of the underlying investments without being distorted by the timing or size of cash flows (deposits/withdrawals) in or out of your account. TWR is useful when analyzing your manager’s performance and comparing them to a competitor or a benchmark. Assume that your portfolio was $100,000 on January 1st and $130,000 on December 31st of the same year and that you made no additional deposits/withdrawals to your account; in this case, your SRR would be 30%. Now assume that you started the year with $100,000 and then deposited $20,000 on June 15 and that your portfolio’s market value was $130,000 on