Trend-following investing is thought to be the safest out of the three styles as you are not investing in potentially over-hyped stocks whose future growth is already taken into their stock price or cheap stocks whose stock price will never be able to meet the level that it should be at. Additionally, trend following seemed the most clear-cut out of the three strategies as you buy when the price is below the five, ten, and twenty day exponential moving averages and around the lower Bollinger band and sell when it approaches the upper Bollinger band 20-moving average or clears the three exponential averages. Some disadvantages to Trend-following are that the gains are usually smaller than that of growth and value investing and it also more time consuming.