What Do Top Traders Find More Useful Than SMA As An Indicator? - Exponential Moving Average (EMA) Price data is also noisy. One large upward candle doesn't create a trend, and neither do three very small upward candles. Therefore, you need a filter that separates noise from signal without creating so much lag that, by the time you assess the information, all entries are aged and can no longer be acted on. https://followingbook.com/post/776276_what-do-top-traders-find-more-useful-than-sma-as-a-indicator-exponential-moving.html