29 Jul 2011, 04:22
Why/when would an ETF not match with the underline index it is tracking? I am looking at the Dow Jones sustainability Index as one of my investing fund. This fund is not on your site but a little concern here.

29 Jul 2011, 10:07
Dr. David Costa's reply:
an ETF always tracks its underlying index. At times it might have a tracking error but it does always track the index it is linked too. More information about the ETF in question are available at

Dr David Costa