For those who find the EFA data "useless", wanted to provide data showing that bottom line, the EFA data does appear useless IMO if used for tracking on a daily basis.
I've attached a data file that shows both the Ifund and EFA fund plotted since January 2005. I normalized the EFA data (by a factor of 1/3) so there would be better granularity showing the differences.
Looks to me like the EFA tracks the trend of the Ifund very well but I'm seeing a much more jagged path for EFA. I think that means on a daily basis, the EFA and Ifund can be a fair amount different, so much so that using the EFA quote would be very misleading for day to day trading.
I could create a file that started from January 2006 til now which would show the jagged difference better but hopefully this will be clear enough. Let me know and I can fairly easily post one that is for a shorter (but still recent) time interval.
I haven't uploaded an attachment before so if it doesn't appear, I may have to do this again.