A volume moving average (volume MA) is a rolling average of bar-level volume over a window — typically 20 or 50 bars. It is the cleanest way to define 'high volume' versus 'low volume' for a given asset and timeframe without picking an arbitrary absolute threshold.
Trading reads: a breakout on volume above 1.5× or 2× the volume MA is treated as confirmed participation, while a breakout on below-average volume is often considered suspect. Volume MAs are also used as a filter — only act on signals when current volume exceeds the average.
Volume MAs are normally computed as a simple moving average, since the goal is a stable baseline rather than fast responsiveness. They are calibrated per-asset because volume scales vary wildly across instruments.
Formula
VolMA_t = (V_t + V_{t-1} + ... + V_{t-N+1}) / NExample
20-bar volume MA on BTC = 1,200 contracts. Current bar volume = 2,800 — about 2.3× the average, qualifying as a volume-confirmed bar.
How Noon Barbari uses Volume moving average
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See the indicators reference →Related terms
- Indicators
Volume-weighted average price (VWAP)
Average price weighted by volume — the institutional benchmark for intraday fills.
- Indicators
Moving average
A rolling average of price over a fixed window, used to smooth noise.
- Indicators
Simple moving average (SMA)
Unweighted arithmetic mean of the last N closes. Every bar counts equally.
- Market structure
Break of structure (BOS)
Price closing through a prior swing point in the direction of the existing trend.