The market has not moved outside of its current channel in over six months, "volume down market up" as
zerohedge puts it, has been the theme nearly every day where the market struggles for a trend. This phenomenon occurs most frequently when the market enters into a drifting channel usually during the middle three hours of the trading day when volume is normally lowest.
Clearly something is wrong with the picture. Who is the entity buying into the high frequency selling every day? I cannot say for sure though i believe it could programs clamoring for pennies when real human traders were clamoring for dollars.