EMA 9

The EMA 9 is an exponential moving average of the chart's last 9 candles. It hugs the price and shows short-term momentum.

Calculation

\mathrm{EMA}_t = \alpha\,C_t + (1-\alpha)\,\mathrm{EMA}_{t-1}, \qquad \alpha = \frac{2}{9+1} = 0.2

$C_t$ is the close of candle $t$ . The first value is the average of the first 9 closes; after that, each new candle enters with 20%. It is calculated on the chart's candles: over 45 minutes on the 5-minute chart, over 9 days on the daily chart. The current candle counts with its current price.

What it is used for

As a short-term trend filter in intraday trading: as long as the price closes above a rising EMA 9, momentum is intact.
In strong trends as a tight trailing stop or as a first target for pullbacks.
Paired with an EMA 20 or 21: if the EMA 9 crosses the longer one upward, short-term momentum turns up; downward, it turns down.

Because it reacts so quickly, it produces many false signals in sideways phases.

Settings

Setting	Default	Effect
Length	9	1–500 candles. The menu name stays the same; the line label shows the new length.

Tip For an EMA on a fixed timeframe, such as 9 days on the hourly chart, use the Exponential Moving Average (EMA) and its Timeframe setting.

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