Anytime you have a stock that has a pullback into consolidation you want a nice strong decline in volume. This and a descending stochastics allow the buying pressure to build up. This is what attracts seasoned traders like me and hundreds of others to take notice. This is an accumulation period. Stocks cant just keep climbing. There has to be a pullback at some point. A retracement to close the gap and allow the moving averages to catch up and show support. You can usually notice that the volume gets smaller and smaller as a few days go by then another explosion for another move north. Learning to read charts will let you know when its time to take some profits and ad some more into the pullback