Volume Weighted Moving Average

Moving Averages

What it measures

VWMA is a moving average where each price in the lookback period is weighted by that period's trading volume, rather than every period counting equally the way a standard SMA does. Days with heavier volume have proportionally more influence on the average — the idea being that price levels reached on high volume are more "meaningful" than the same price level reached on light volume.

How readings are interpreted

VWMA will diverge from a standard SMA whenever volume has been unevenly distributed across the lookback window. If VWMA sits above the SMA, recent high-volume days skewed toward higher prices — a sign of genuine buying interest at those levels. If VWMA sits below the SMA, high-volume days skewed toward lower prices.

Conventional levels

Price crosses above VWMA: bullish signal, similar interpretation to any other moving average crossover
VWMA above SMA of the same period: recent high-volume activity has been concentrated at higher prices — bullish volume skew
VWMA below SMA of the same period: high-volume activity concentrated at lower prices — bearish volume skew
A widening gap between VWMA and SMA signals volume is becoming more one-sided

Where it works, and where it does not

Most informative specifically when compared side by side with a standard SMA of the same period — the comparison itself (not either line alone) is where VWMA's real value lies. Works across most timeframes.

Commonly read alongside

SMA: The natural comparison pair — the gap between VWMA and SMA is itself a useful volume-conviction signal
Breakouts: A breakout with VWMA confirming (VWMA also breaking to a new level, not just price) suggests genuine high-volume participation behind the move
OBV/A-D Line: All relate to volume conviction from different angles — general agreement across them strengthens a read

Known limitations

On a security with fairly even volume distribution over time, VWMA will look nearly identical to a standard SMA, adding little extra information
A single unusually large volume day (e.g. index inclusion, block trade) can skew VWMA disproportionately for a while
Less universally followed than SMA/EMA, so fewer other participants are watching the same VWMA level

In practice

Use side by side with a standard SMA of the same period — the divergence between them is the actionable signal, not either line in isolation
A widening VWMA-above-SMA gap during a rally is a reasonable volume-conviction confirmation
Less useful in isolation than as a comparative tool — VWMA crossovers alone are not conventionally treated as meaningfully different from a standard MA crossover
Particularly relevant for larger, more liquid names where volume distribution genuinely varies meaningfully day to day

Plot it yourself. Add this indicator to a chart, change every parameter and watch the line move, then backtest how the rule would have behaved on historical data — free on the S&P 500 ETF, no card.

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This is reference material, not advice. It describes what each indicator measures and how its readings are conventionally interpreted. Nothing here is a recommendation to buy or sell anything, and no indicator predicts future prices. GU Analyser is an analytical tool — no money is ever traded here.