BRVX Glossary · Exponential moving average (EMA) · Updated September 25, 2026
An exponential moving average (EMA) is a moving average that gives more weight to recent prices than to older ones, so it reacts faster to new price changes than a simple moving average of the same length.
The formula
EMA Price × k + EMA(prev) × (1 − k) k 2 ÷ (n + 1)
For a 20-period EMA, today's price gets about 9.5% of the weight.
How it works
- New price Weighted by k
- Old EMA Weighted by 1 − k
- New EMA Sum of both
EMA vs SMA
- EMA turns sooner after a change in direction.
- EMA gives more false signals in choppy markets.
- SMA is steadier and slower; the 200-day SMA is the more watched long-term line.
Common lengths
9 and 21 periods for short-term trading, 50 for medium-term trend, 200 for the long term. MACD is built from the 12- and 26-period EMAs.
On BRVX
BRVX's TradingView chart covers 1-minute to 1-month timeframes. A 21-period EMA on a 1-hour BRVX chart spans less than one day; on a daily chart it spans three weeks — the length only means something together with the timeframe.
Questions about Exponential moving average (EMA)
Is EMA better than SMA?
It is faster, not better; the choice depends on whether you prefer earlier signals or fewer false ones.
What EMA do day traders use?
Often the 9 and 21 EMAs on intraday charts.
What is the smoothing factor?
k = 2 ÷ (n + 1), the weight given to the newest price.
Exponential moving average (EMA): next steps on BRVX
Exponential moving average (EMA) on BNB/USDT: weekend candles included, leverage 5x to 100x, 0.05% to open and 0.05% to close.
Read next: Moving average, MACD and Golden cross.
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