Trend following can work well on stocks. Buying stocks at new all time highs and exiting them after they’ve fallen below an ATR trailing stop would have yielded a significant return on average.
No single approach of trend measurement method can systematically deliver better results across all dimensions. To determine which method is appropriate, various aspects need to be considered. These include length of measured trend, the way signal is compared and conversion of signal into position.
If markets follow the Random Walk Hypothesis, stop loss rules has no value. If markets exhibit momentum effects, research shows that stop loss rules can improve returns and reduce risk.
The paper finds positive momentum profits for the 6 different types of momentum strategies tested but these profits were only better than an equal-weighted strategy in the in-sample period.