First of all it is just data that moves around due to supply and demand it could be Beans, AOl, Dell the S&P or eggs (any one remember eggs);.
Ok you are looking at it from a fundamental point of view and looking for a long entry. So we can use technicals for the timing.
So first were is the danger to a long trader, I would say it is at the high point set on the chart a few days ago as this could be a double top.
The market has pulled back from the high so has it revered at the double top ? well who knows probably now one. However, as it has pulled back on light volume it suggests there there is little conviction in the down trend at the moment so do we enter when it starts back up or wait for the break out or just short it.
At this stage all we have is a set up and we have to wait for the confirmation as to the real direction at this point.
By the way the chart are bars of daily data but the principle would be the same if they were 5 min bars of AOL