Has anyone used the technical graphs available on Yahoo Investment
http://au.finance.yahoo.com/investing
If one gets up a technical graph on a stock one can then do a comparison with up to 4 other stocks according to the help page.
However the comparsion doesn't make any sense to me.
Does anyone know how to interpret the comparison graph?
(The original stock is shown as a % increase (decrease) from the start date of the graph (0% at the begin date). However the other stocks are shown as a line which jumps around the 0% line, when clearly, looking at both stocks shows both have increased more or less similarly over time? I thought perhaps it shows a measure of the relative performance of the two shares but this doesn't work if you look closely either.
Plus the result makes no sense at all if you compare a stock with itself.
I tried emailing Yahoo for help but all they suggested was to clear the browser cache?)
