In either of the two market extremes, the bear market environment or raging bull market, swing trading proves to be a rather different challenge than in a market between these two extremes. In these extremes, even the most active stocks will not exhibit the same up-and-down oscillations as when indexes are relatively stable for a few weeks or months. In a bear market or bull market, momentum will generally carry stocks for a long period of time in one direction only, thereby confirming that the best strategy is to trade on the basis of the longer-term directional trend.
By holding overnight, the swing trader incurs the unpredictability of overnight risk such as gaps up or down against the position. By taking on the overnight risk, swing trades are usually done with a smaller position size compared to day trading (assuming the two traders have similarly sized accounts). Day traders typically utilize larger position sizes and may use day trading margin of 25%.