John, I don't think its as simple as that. There are many factors to consider, and also depends what kind of market your dealing with. More times than not lately when the volume stops the price falls. Most traders are just playing scalps, in and out on the volume. Got to get out out while the volumes still there. A lot of times you can see the volume stops, the price will stall, seconds, maybe minutes, then it will drop. At this point or before this point hopefully you've sold 1/3 of your shares if your expecting a continuation, take some profit! Then if the run continues, sell a 1/3 on the next peak, depending on the run, you may be riding free shares by now. For the most part I look day to day for approximently the same or more volume as the previous day for continuation of a run. This is just my opinion and your milage may vary LOL. Myself, I have been trading very little lately, just quick scalps until the market turns, its to easy to get burned if your not careful or experienced!