Volume Weighted Moving Average
The Volume Weighted Moving Average (VWMA) is a moving average that incorporates trading volume as a weighting factor, giving greater influence to price levels where higher volume was transacted and less weight to prices accompanied by low volume.
A simple moving average (SMA) weights each day's closing price equally, while an exponential moving average (EMA) assigns exponentially declining weights to older prices. The Volume Weighted Moving Average (VWMA) introduces a third dimension: it weights each period's price by the volume traded in that period. A day with exceptionally high turnover — such as a quarterly earnings release or index rebalancing day — exerts disproportionate influence on the VWMA, while a low-volume holiday session has minimal impact.
The calculation multiplies each period's closing price (or typical price: (High + Low + Close) / 3) by the volume for that period, sums these products over the lookback window, and divides by the total volume over the same window. The result is structurally similar to VWAP but computed as a rolling average over a user-defined lookback period rather than anchored to a session start.
The VWMA diverges most visibly from the SMA and EMA during periods where price movement accompanies significant volume. If a stock surges from Rs 500 to Rs 600 on unusually heavy volume across three days, the VWMA for those three days will be pulled much higher than an SMA of the same period. This property makes VWMA a useful confirmation tool: if the VWMA diverges positively from the SMA (VWMA above SMA) during an uptrend, it historically suggests that the price advance is supported by genuine transactional conviction. If the SMA is rising but the VWMA is flat or declining, it may indicate that the price gain occurred on thin volume and lacks broad participation.
For Indian market practitioners, the VWMA is available on most charting platforms including TradingView, Kite, and Dhan's charting suite. It is most commonly applied as an alternative to the standard EMA for trend-following purposes, particularly by traders who are attentive to volume as a confirming indicator. In NSE futures trading, where volume surges around expiry weeks can distort traditional moving averages, the VWMA's volume weighting can provide a more nuanced read of the underlying trend.
One limitation is that VWMA is not anchored to a session and therefore differs conceptually from VWAP, which resets each day. The VWMA is a continuous indicator comparable in usage to the EMA, not a daily reference benchmark.