Boxed In

Here is a five minute bar chart for the e-minis last two day sessions. At the moment the market seems trapped in a box defined by the limits of yesterday's late reaction( blue rectangle). I see today's action as only mildly bullish thus far, largely because the e-minis have held above midpoint support defined by yesterday's late reaction (dotted purple line). But volume is very low (red line). This coupled with the fact that the market is at the top of its recent trading range makes me reluctant to back up my bullish views by taking a position. I think good upside volume above 780 would resolve this uncertainty.