On Monday morning, Sam set up the three charts he chose in Lesson 26: Chart Timeframes. Then he scrolled a trading forum and saw a screenshot of XYZ with a line he didn't have. It was labeled VWAPVWAP (Volume Weighted Average Price) is the average price a security has traded at throughout the session, weighted by volume — it's the most important intraday indicator for day traders, serving as a real-time measure of fair value and theRead definition →, it started fresh at 9:30, and the poster had circled two spots where XYZ dipped to it and bounced.

Sam added it to his 5-minute chart and watched. By 11 a.m. he'd seen the same thing twice.

Was that a real effect, or two lucky bounces? To answer that, he first needed to know what the line actually measures.

In 30 seconds

  • VWAP (VolumeVolume is the total number of shares (or contracts) traded during a given time period — it's the primary confirmation tool for all price action, because a price move accompanied by high volume indicates genuine market participation, while tRead definition →-weighted average price) is the average price of all shares traded so far today, with each price counted in proportion to how many shares traded there.
  • It starts at the open, updates through the day and resets every session, so it only belongs on intraday charts.
  • Large investors often judge their trading against VWAP, which is one reason day traders watch whether price is above or below it.
  • VWAP describes today's average price; it doesn't predict the next move, and it swings wildly in the first minutes after the open and means little in thin stocks.

In this lesson you'll learn what VWAP measures, how it's calculated, why it behaves differently at 9:35 and at 3:30, how traders read it and where it fails. If you're new, start with Lesson 24: Basic Indicators, where Sam cut his chart down to volume and one average.

What is VWAP?

VWAP, short for volume-weighted average price, is the average price a stock has traded at during the current session, weighted by volume. Prices where lots of shares changed hands count more; prices where only a few traded count less.

Picture a coffee shop on a busy morning. It sells 100 regular coffees at $3 and 10 fancy drinks at $6. The average of the two prices is $4.50, but that's not what a typical customer paid. Weighted by how many were sold, the average sale was about $3.27, because almost everything sold at $3.

VWAP asks the same question about a stock: of all the shares that traded today, what did the typical share cost? If 2 million shares traded near $50 in the morning and 100,000 traded near $52 at lunch, VWAP sits close to $50, because that's where nearly all the trading happened.

On a chart, VWAP shows up as one line laid over your intraday candles.

How is VWAP calculated?

VWAP is calculated by multiplying each price by the volume traded at it, adding those up from the open, and dividing by the total volume so far. Charting platforms usually do this candle by candle, using a "typical price" for each candle.

TradingView, the free charting platform Sam uses, describes its method this way: for each candle, take the typical price (high plus low plus close, divided by three), multiply it by that candle's volume, keep a running total of both, and divide one by the other. The calculation resets at the start of each session by default (TradingView).

Here it is with three 5-minute candles of XYZ (hypothetical numbers):

Candle (ET)
9:30 to 9:35
Typical price
$53.00
Volume
40,000
Price times volume
$2,120,000
Candle (ET)
9:35 to 9:40
Typical price
$53.20
Volume
20,000
Price times volume
$1,064,000
Candle (ET)
9:40 to 9:45
Typical price
$52.90
Volume
60,000
Price times volume
$3,174,000
Candle (ET)
Running total
Typical price
Volume
120,000
Price times volume
$6,358,000

Hypothetical: XYZ's VWAP at 9:45 a.m.

Total of price times volume since the open$6,358,000
divided by Total shares traded since the open120,000
equals VWAP$52.98
equals A simple average of the three prices would be$53.03, pulled up by the light-volume middle candle
Illustrative: the period with the most shares traded pulls VWAP toward its price.

You'll never need to do this by hand. But knowing how it's built explains everything about how the line behaves.

Why does VWAP jump around early and barely move late?

VWAP jumps around early because it's a running total from the open: after one candle it simply equals that candle's price, so each new candle can move it a lot. Hours later, the same new candle is a small slice of a big total, so VWAP barely moves.

Think of a class average. After the first test, one bad grade swings the average hard. By the tenth test, one bad grade barely dents it.

That gives VWAP three personalities during a regular session:

Time (ET)
First 15 to 30 minutes
How VWAP behaves
Moves fast, often crossed back and forth
What it means for you
Early crosses carry little meaning
Time (ET)
Mid-morning to midday
How VWAP behaves
Settles, moves gradually
What it means for you
Its position and slope start to mean something
Time (ET)
Late afternoon
How VWAP behaves
Barely moves
What it means for you
A reference level, slow to reflect late moves

How is VWAP different from a moving average?

VWAP differs from a Moving AverageA moving average smooths out price data by calculating the average closing price over a set number of periods — it filters out noise and identifies the trend direction, with the stock above the MA interpreted as bullish and below as bearishRead definition → in two ways: it weights each price by volume, and it resets every session. A simple moving average gives every candle the same weight and rolls across days, so a 20-period average on a 5-minute chart always covers the last 20 candles, even if some of those are from yesterday.

Weights by volume
VWAP
Yes
Simple moving average
No, every candle counts equally
Starts over each day
VWAP
Yes, at the session start
Simple moving average
No, it rolls across days
Covers
VWAP
Everything since the open
Simple moving average
A fixed number of recent candles
Best question it answers
VWAP
Is price above or below today's average trade?
Simple moving average
Which way has price been drifting lately?

They answer different questions, and many day traders watch both. Lesson 28: Moving Averages covers the moving average side.

Why do professional traders care about VWAP?

Professional traders care about VWAP because it's a common yardstick for judging how well a large order was traded. If a fund buys a big position over the day, comparing its average price with VWAP shows whether it paid more or less than the typical share traded that day.

The idea goes back to research by Berkowitz, Logue and Noser in 1988, who proposed VWAP as a fair estimate of the prices a patient trader faces on the day of a trade. Finance researcher Ananth Madhavan notes that its simplicity is a big part of its appeal, and also warns that chasing the benchmark blindly can raise costs for large, urgent trades (Madhavan, 2002).

Because large orders move prices, institutions usually split them into many small pieces spread across the day, timed to follow the normal flow of volume so the average lands close to VWAP. Researchers have published methods for exactly that slicing problem (Konishi, 2002; Bialkowski, Darolles and Le Fol, 2008).

What this does and doesn't mean for you matters. It explains why so many traders watch the line, and why price sometimes reacts near it. It doesn't mean big buyers are guaranteed to defend VWAP, and there's no rule that makes price bounce there. Treat it as a widely watched reference point.

How do day traders read VWAP?

Day traders read VWAP in three ways: which side of it price is on, which way the line itself is sloping, and how price behaves when it returns to the line.

Position. Price above VWAP means the latest trades are happening above today's average trade, so buyers have recently been willing to pay up. Below means the reverse. Many traders use this as a filter: look for longs mainly above VWAP and avoid them below.

Slope. A rising VWAP means heavy volume keeps trading at higher prices. A falling one means the reverse. A flat VWAP that price keeps crossing usually means a choppy, directionless session, and in that case the line tells you very little.

Reaction on a return. In a trending session, pullbacks often come back toward VWAP. Watching whether price holds near it, or slices straight through on heavy volume, tells you something about who's in control. It's the same idea as SupportSupport is a price level where buying pressure has historically overcome selling pressure, causing price to stop declining and reverse — it's the floor where demand enters the market, and when it holds, it's a potential long entry; when it Read definition → and ResistanceResistance is a price level where selling pressure has historically overcome buying pressure, causing price to stall, reverse, or consolidate — it's the ceiling where supply enters the market and where breakout traders watch for either a coRead definition → from Lesson 22: Support and Resistance, applied to a line that moves. Lesson 77: Pullback Basics shows how traders build a plan around that.

Illustrative: position, slope and the type of session decide whether VWAP is telling you anything.

Some platforms also draw bands above and below VWAP. Leave those off for now; the line itself is enough to learn.

When does VWAP stop being useful?

VWAP stops being useful when the session is too young, the stock is too thin, or the market is going nowhere. In those conditions it can still be drawn, but it no longer tells you much.

  • The first minutes after the open. With little volume in the total, the line chases price around.
  • Thin stocks. In a stock that trades a few thousand shares, a single order can drag VWAP around. Lesson 25: Liquidity and Volume explains why those stocks are a bad place to learn anyway.
  • Choppy, flat sessions. Price crossing a flat VWAP over and over is noise.
  • Anything beyond today. Standard VWAP resets each session, so yesterday's line says nothing about tomorrow.

VWAP shows where today's trading has been; it can't tell you where price goes next.

Sam's Monday with VWAP (hypothetical)

Sam keeps his daily chart levels from last week and adds VWAP to his 5-minute chart. He places no orders; he just writes down what he sees.

Hypothetical: XYZ and VWAP on Monday

Illustrative example
  1. Line still settling

    VWAP reads $52.98 after the first three candles. Price has crossed it twice already. Sam ignores both crosses because the total is still tiny.

  2. First return to VWAP

    XYZ has run to $53.40 and pulls back to $53.06. VWAP is $53.05 and rising. The 5-minute candle closes at $53.18 with a long lower wick on above-average volume.

  3. Second return

    Another dip, to $53.12, with VWAP at $53.11 and still rising. The candle closes at $53.25. Sam notes: same line, same reaction, rising slope both times.

  4. The line goes flat

    VWAP flattens at $53.15 and XYZ crosses it three times in 25 minutes on light volume. Sam writes: flat line, no story.

His review note: "Both bounces came while VWAP was rising and volume was decent. When it went flat, it stopped meaning anything. Two examples isn't a pattern yet." He starts a VWAP page in his notebook to tally returns, holds and breaks over the next few weeks.

Treating every VWAP touch as a buy signal

You're doing it if
You buy the moment price touches VWAP, at any time of day, whether the line is rising, flat or falling, and in any stock.
The fix
Check the slope and the clock first. A touch of a rising VWAP after the first 15 to 30 minutes, in a liquid stock, is worth watching. A touch of a flat or falling one, or one at 9:35, is mostly noise. Wait for the candle to finish before judging the reaction.

Your turn: watch VWAP for one morning

VWAP practice (15 minutes, no orders)

0 of 5 done

Check your understanding

Check your understanding

A stock trades 90,000 shares at $20 and 10,000 shares at $30 today. Roughly where is its VWAP?

Check your understanding

Why does VWAP move so much more at 9:40 a.m. than at 2:40 p.m.?

Check your understanding

XYZ keeps crossing a flat VWAP on light volume. What's the most sensible reading?

Key takeaways

  • VWAP is today's volume-weighted average trade price, built as a running total from the session start.
  • It moves fast early and slowly late, so early crosses mean little.
  • Large investors use it as a yardstick for their own trading, which is why so many traders watch it.
  • Read it three ways: which side price is on, which way the line slopes and how price reacts when it returns.
  • Flat lines, thin stocks and the first minutes after the open make it unreliable.

Frequently asked questions

Does VWAP include pre-market trading?
It depends on your platform and settings. Many charts calculate VWAP from the regular 9:30 a.m. ET open, while others include extended-hours trades when extended hours are switched on. Check which one you're using, because the two lines can differ a lot on a day with heavy pre-market trading. Lesson 11: Stock Market Hours explains those sessions.
Is VWAP the same on a 1-minute and a 5-minute chart?
Very close, but not always identical. Because VWAP is a running total, the timeframe barely changes it, but platforms that use each candle's typical price instead of every individual trade can show small differences between timeframes and between platforms. Pick one chart and use it consistently.
What is anchored VWAP?
Anchored VWAP starts its running total from a point you choose, such as an earnings day or a big gap, instead of resetting every session. That lets it span several days, so swing traders use it too. Standard session VWAP is the one to learn first.
What are VWAP bands?
VWAP bands are lines drawn a set distance above and below VWAP, often based on standard deviation, to show how far price has stretched from the average. They're an add-on, not part of VWAP itself, and beginners can safely ignore them until the main line makes sense.
Can I use VWAP on a daily chart?
Standard VWAP doesn't fit a daily chart, because it resets every session and a daily candle is a whole session. For multi-day context, use the daily chart levels you already mark, a moving average or an anchored VWAP.

Up next: EMA or SMA, and which settings matter?

VWAP starts over every morning. The 20-period average Sam kept from Lesson 24 doesn't: it carries yesterday's candles into today. And his forum screenshot showed two more lines, a 9 EMA and a 20 EMA, that hugged price even more tightly. What's the difference between an EMA and an SMA, and which ones does a day trader actually need? Lesson 28: Moving Averages answers that.

Disclaimer

This lesson is for educational purposes only and is not financial advice. VWAP describes past trading during the session and does not predict future prices; price can move through it quickly, especially early in the session, in thin stocks and in choppy markets. All Sam examples and numbers are hypothetical. Trading involves the risk of loss, and nothing here guarantees any result. For our complete disclaimer, visit https://daytradingtoolkit.com/disclaimer.

Article Sources

This lesson relies on peer-reviewed research, industry research and platform documentation.