VWAP (Volume Weighted Average Price) explained

Volume

The full guide, with worked examples and what our tests found: VWAP and Anchored VWAP Studies

What VWAP measures

VWAP is the average price of a security weighted by volume over a trading session. It represents the average price at which all transactions occurred during the day. It's used primarily by institutional traders as a benchmark — buying below VWAP is considered a good fill; selling above VWAP is also good. For retail traders it acts as a dynamic support/resistance and trend indicator.

How VWAP readings are interpreted

Price above VWAP: bullish intraday bias, institutions are paying above average. Price below VWAP: bearish intraday bias. Price crossing VWAP from below: momentum shift to bullish. VWAP acts as strong support in uptrends — price often bounces back to VWAP during pullbacks and then resumes the trend.

Conventional VWAP levels

Price above VWAP: bullish intraday bias — prefer longs
Price below VWAP: conventionally read as bearish intraday bias
Price crosses above VWAP on rising volume: conventionally read as intraday strength
First cross of VWAP in the session: most significant; subsequent crosses are less reliable
Distance from VWAP > 1%: stretched; potential mean reversion to VWAP

Where VWAP works, and where it does not

Here VWAP runs from the first candle loaded and does not reset, so its value depends on how much history is on the chart. For the session VWAP most traders mean, which restarts at 09:30 each day, use Anchored VWAP anchored at the market open. Either is most meaningful for intraday and short-term swing trading, and less useful for crypto and 24/7 markets without defined sessions. Particularly powerful on days with trending price action rather than gaps.

Indicators commonly read alongside VWAP

Volume: Price at VWAP + surging volume = trend confirmation
RSI: VWAP support test + RSI not oversold = healthier trend
Moving Averages: VWAP above 20 SMA = bullish session developing

Known limitations of VWAP

This VWAP never resets — it averages every candle since the first one loaded, so it shifts with the range on the chart (Anchored VWAP restarts at the open, a week or a month)
In news-driven gaps, VWAP is distorted by the opening print
On illiquid stocks or crypto, VWAP is easily manipulated by a single large order

VWAP in practice

In momentum approaches, a cross above VWAP on volume is the signal watched, with twice the distance to VWAP a common reference target
In mean-reversion approaches, price 0.5–1% below VWAP and turning up is read as stretched, with VWAP itself as the reference
Anchored VWAP, fixed to a significant low, is generally more useful than session VWAP over longer horizons
As an institutional execution benchmark, large-cap prices tend to respect VWAP closely, making it a widely watched level

Other volume indicators

Anchored VWAP
Elder Force Index
Price Volume Trend
Negative Volume Index

On the test bench

VWAP Trading Strategy Backtest: Does the QQQ Result Generalise?
The long side of a published VWAP rule rebuilt on QQQ, then tested after the study’s years, on 149 large US stocks and against trading costs.

Does the VWAP Strategy Beat Buy and Hold After Trading Costs?
How much each trade can cost before the long-only VWAP rule falls behind buying and holding QQQ, and where spreads, fees and currency conversion sit against that.

VWAP and Anchored VWAP Studies
VWAP and Anchored VWAP explained: the calculation, the anchors and a published VWAP trading rule, with our tests of that rule on QQQ, on large US stocks and after trading costs.

Testing ideas built on VWAP

A reading of VWAP can be written as an exact rule and checked against historical data — as a full strategy with entries, exits and costs, or as a single condition and what followed it:

How to backtest a trading strategy without code
Event analysis: what follows a market event

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.