There are different buy-and-hold trading strategies. The main idea behind these strategies, is to ride long-term bull trends and eliminate the market noise associated with lower time frames. Short-term traders often get frustrated when the market shakes them out of their trades as it whipsaws on the smaller time frames. The price action on a weekly chart is often non-volatile over a certain period of time. When the same period is analyzed on smaller time frames, the picture is usually much more ragged and unpredictable than on the weekly time frame.