A wide spread up on high volume shows effort to go up. If the next day is down, this demonstrates that
within the high volume seen on the day before, selling overcame the demand, otherwise, prices could not
possibly have fallen the next day. Exercise caution in this situation. It is the second down-day that is
important. If the second day falls on low volume, this can show that the selling has now stopped.
Moreover, if the selling has stopped, then expect the market to go up.