We follow the DOW down even when the reason has no direct bearing on 99% of the companies and rarely out do it on the + side.
The day after the IMF(?) said australia will have the best growth in the developed world the market went down 1% while the DOW was up.
Its hard to believe the shorters and bots can control the whole market but to be 2% down on the week with the vaguest of notions about greece seems weird.
Perhaps everyone was at alunch and they all use the same trading s/w that said sell.
I had some miners down 10% to 33% on the week.
It would be interesting to know if the sellers are the big boys or the day trader types.