Candlesticks + VSA: Reading Effort vs Result

Volume, range and close, read together

By: 42Fibonacci
Updated: 6 Nov 2026
Read time: 9–11 min

Volume Spread Analysis (VSA) reads each price bar from three things together: its volume, its spread (the high-to-low range) and where it closed in that range, against what came before it. Developed by Tom Williams from Wyckoff’s work, it asks whether effort matched result. Its bullish signs, like stopping volume and a quiet test, add to a reversal candle.

At a glance

Type: Context framework
What it adds: Whether the volume behind a bar matches the price move it made
Read it from: Volume, spread and close, against what came before the bar
Bullish signs: Stopping volume, selling climax, no supply, the test, the shakeout
Common misconception: A huge volume bar at a low ≠ the bottom

What Is Volume Spread Analysis

Volume Spread Analysis (VSA) is a way of reading a price chart one bar at a time, using price and volume together. It answers one question:

Did the volume behind this bar get the price move it should have?

VSA was developed by Tom Williams, a British trader, and set out in his books Master the Markets and The Undeclared Secrets That Drive the Stock Market. He built it on the work of Richard Wyckoff, an American market writer of the early 1900s who studied how large buyers and sellers leave traces in price and volume.

Williams’ view was that large, professional traders cannot hide their activity completely. When they buy heavily into a falling market, or stop buying in a rising one, the volume and the shape of the bars show it. VSA is a set of names for those footprints. Treat that as the method’s idea of what is happening, not as something a chart can prove: the chart shows how much traded, not who traded.

Note

“Spread” here means the bar’s range, from its high to its low. It is not the bid-ask spread, the gap between buying and selling prices that the word means elsewhere in trading.

The Three Things on Every Bar

VSA reads every bar from three things at once. None of them means much alone:

What	How it’s judged	What it tells you
Volume	Against the last several bars: very high, high, average, low	How much effort went into the bar
Spread	The high-to-low range, against recent bars: wide, average, narrow	How far price travelled during the bar
Close	Where it sits in the bar’s range: high, middle or low	Which side was in control when the bar ended

Every one of those judgments is relative. “High” volume means high for this stock, compared with its own recent bars, never a fixed number of shares. That is the same relative-volume idea taught in the volume guide.

VSA also calls a bar “up” or “down” by its close compared with the previous bar’s close, and mostly ignores the open. A candle chart reads the open against the close instead. Most of the time the two agree; on a gap day they can differ.

The background. Williams’ word for everything before the bar: the trend, the support and resistance levels, and any earlier volume signs. The same bar means different things in different places. A heavy-volume bar after a long decline into support is read very differently from the same bar in the middle of a range.

Effort vs Result

The core of VSA is a rule from Wyckoff, often called the law of effort versus result. Volume is the effort. The price move (the spread, and how far the close travelled) is the result. The two should match.

When they match, the move is behaving normally. A wide up bar on high volume that closes near its high is a big effort with a big result: buyers pushed, and price went.

When they don’t, something is getting in the way. Very high volume on a down bar that closes off its low, or on a narrow spread, is a big effort with a small result. Sellers pushed hard, yet price would not keep falling. The VSA reading is that buyers were taking the other side of that selling. Traders call this absorption: the selling was soaked up.

Low volume matters too. A narrow down bar on light volume is a small effort with a small result. The two match, but what they say is that few sellers are active at that price. That is the root of the no-supply and test signs below.

Tip

Ask it of every bar: was the effort high or low, was the result big or small, and do they match? A mismatch is where VSA looks hardest.

The Bullish Signs

VSA has names for signs of strength (buyers gaining control) and signs of weakness (sellers gaining control). These are the bullish ones. Sources word them differently, so read them as descriptions, not formulas. Each needs the bars after it to confirm it.

Stopping volume
Looks like: During a decline, a down bar (or a few) on very high volume, often with a wide spread, that closes in the middle or upper part of its range.
Read as: Heavy selling met enough buying that price could not stay at the low. The fall is being stopped, though not always at the exact low.
Needs next: Price stops making meaningful new lows, and later a test on low volume.
Selling climax
Looks like: The extreme form, at the end of a long decline: a very wide down bar on the heaviest volume in a long time that still closes well off its low, as holders give up at once.
Read as: Like stopping volume, potential exhaustion, not a confirmed bottom.
Needs next: The same as stopping volume: no meaningful new lows, then a successful test on low volume. The low means little until that test holds.
Candlesticks + Volume covers it.
No supply
Looks like: A down bar with a narrow spread, on volume lower than each of the two bars before it. Sources differ on where it should close.
Read as: Price slipped, but few sellers took part: there is little selling at these prices. It means most after a sign of strength.
Needs next: An up bar.
The test
Looks like: After stopping volume or a climax, price dips back toward the area of that heavy selling on low volume, often on a narrow spread or leaving a lower wick, and closes in the middle or upper part of its range.
Read as: The market is checking whether sellers are still there, and the low volume says few are.
Needs next: An up bar, ideally on rising volume. A test on high volume says sellers are still there, so wait for another test; a close below the earlier low ends the read.
Shakeout
Looks like: Price drops quickly below a support level or the floor of a range, often on a wide spread and high volume, then closes back above it, near the top of the bar.
Read as: The drop flushed out stop orders and nervous holders, and buyers took their shares.
Needs next: A test that holds, then a move up. If the drop came on high volume, that test should come on low volume.
Wyckoff’s spring is close to it. Candlesticks + Trading Ranges covers the spring as a false break of a range floor.

The chart below shows the two signs this page leans on most: stopping volume, then a test.

Stopping volume, then a testIllustrative

The decline runs on roughly average volume. Then one wide down bar trades more than twice its 20-day average yet closes in the upper half of its range. That is stopping volume: heavy selling, but buyers took enough of it that price could not stay at the low. Nine sessions later, a narrow down bar dips back into that bar’s range on under half its average volume, holds above its low, and closes in the upper part of its range. That is the test: few sellers showed up. The next bar closes above the test’s high on more volume, the confirmation a test needs.

Notice the order. The heavy bar comes first and says buyers have appeared. The quiet bar comes later and says sellers have thinned out. Neither is enough alone; the sequence, and the up bar after the test, is what VSA reads as strength.

Using VSA with Candlestick Patterns

Many VSA signs are close cousins of bullish reversal candles. Both look at where a bar closed in its range. The candle adds the open and the body; VSA adds the volume and the bars around it. Put together, each covers what the other leaves out.

Candle	With this volume	Close to this VSA sign
Hammer at support after a decline	Very heavy	Stopping volume: big selling, close well off the low
Hammer or Dragonfly Doji at a low that already had a heavy-volume bar	Light	A test: the low revisited with few sellers
Tweezer Bottom	First low on heavy volume, second clearly lighter	A test of the first low
Morning Star	Light on the small middle candle, rising on the third	Selling drying up, then demand returning
Bullish Engulfing	Heavy on the engulfing candle	A sign of strength: effort with result, a wide up bar closing high

“Close to” is deliberate. A candle name is a rule about shape; a VSA sign is a judgment about volume and background. A Hammer on very heavy volume in the middle of nowhere is still a Hammer, but it is not much of a stopping-volume read, because there was no decline into support for it to stop. The light-volume row works the other way. On its own, a light-volume Hammer is a weak candle, as the Hammer guide says; it only reads as a test when it revisits a low that heavy volume already defended.

The Tweezer row can look like it reverses the Tweezer guide, which reads heavy volume on the second candle as buyers winning a fight. Here, light volume on the second low shows few sellers left. Both can be bullish; which one you have depends on whether a heavy-volume low came before it.

Use VSA on a candle in three steps:

Read the background first
Has price declined into a level that matters: support, a range floor, an earlier low? Has there already been a heavy-volume bar near the low? A reversal candle with no background is a shape without a reason.
Read the signal candle as a VSA bar
Compare its volume with recent bars, its range with recent ranges, and note where it closed. Heavy volume with a close well off the low reads as buying absorbing selling. Light volume on a dip to an earlier low reads as a test.
Let the next bars confirm it
A later close above the signal candle’s high, often the next session and ideally on rising volume, is the confirmation both methods want. If price closes below the signal candle’s low, the read has failed; heavy volume on that drop makes the failure plainer.

Tip

Heavy then light is the shape to look for. Heavy volume where price stops falling, then light volume when it comes back to that area. A bullish candle at either step is stronger for the volume behind it; a bullish candle at the second, quiet step is the one VSA watches most, and the up bar after it is the confirmation.

What VSA Can't Do

It has no fixed formula. VSA is read by eye. “Very high volume”, “narrow spread” and “closes near the high” are relative judgments, and practitioners draw the lines in different places. Two experienced readers can label the same bar differently. Software that marks VSA bars automatically uses its own thresholds, which are one maker’s choice, not the definition.

It can’t see who traded. VSA’s story about professional money is an interpretation. The chart shows how much traded and where price went, not who was buying or why.

It needs real volume. On exchange-listed stocks, volume is the reported total of shares traded. Some markets, such as spot currencies, have no central volume figure, and the volume a platform shows there is only a rough stand-in.

One bar hides the order of events. A daily bar shows the open, high, low and close, not the path between them. News, earnings and index changes can also swell volume for reasons that say nothing about supply and demand.

Signs fail. Stopping volume can be followed by lower prices, and a test can fail. That is why each sign above names what has to follow it.

Worked example

A stock has fallen for three weeks into an old support level. A Hammer prints on about three times its usual volume and closes near its high. Someone says: 'Stopping volume and a Hammer together. That is the bottom. Buy now.'

What's missing from this reasoning?

The approach

The bars after it. Heavy volume at the low says buyers met the selling, but it also says plenty of sellers were still active that day. VSA reads stopping volume as the start of a bottom, not the end of one. The next thing to look for is a test: price coming back toward the Hammer's range on clearly lighter volume, often on a narrow spread, holding above its low, then an up bar closing above the Hammer's high. If price instead closes below the Hammer's low, the read has failed, and all the more so on heavy volume.

Common VSA Mistakes

Mistake	Instead
Treating every heavy-volume bar at a low as the bottom Biggest volume in months on a down day. Sellers are done.	Heavy volume shows sellers were very active, and it often marks where buying started, not where selling ended. Wait for a low-volume test and an up bar before calling a low.
Reading one bar without its background Narrow down bar on low volume. That is no supply. Buy.	A quiet down bar in the middle of a downtrend is often just a pause. Before calling it no supply or a test, check the background: a level that matters, and heavy buying already seen near it.
Using fixed thresholds as the rule Volume was only 1.8 times average, not 2, so it is not stopping volume.	VSA terms are relative and practitioners draw the lines differently. Ask whether the bar stands out clearly from its neighbours and whether its close fits the read.
Ignoring a failed test It is a test, even though volume jumped on the way down.	A test is a dip on light volume. Heavy volume on the dip says sellers are still there. A light-volume dip that undercuts the low but closes back above it is not a failed test; it is closer to a spring, which Wyckoff readers treat as bullish; what ends the read is a close below the low, especially on heavy volume. The OBV guide reads a light-volume retest that makes a lower low as a bullish divergence. VSA is stricter: once price closes below the old low, it is no longer testing that low. Treat the new low as the level to watch, and look for a fresh test of it.

Key takeaways

VSA reads each bar from three things together: volume, spread (the high-to-low range) and where it closed in that range
Every judgment is relative to the stock’s own recent bars, and always read against what came before the bar
Effort vs result: volume is the effort, the price move is the result; VSA looks for a mismatch (heavy effort, little result) and for quiet bars that show sellers have gone
Stopping volume is heavy selling that fails to keep price at the low; the test is a later quiet dip that shows few sellers left
No supply is a narrow down bar on lower volume than the two before it: few sellers active at that price
A Hammer at support on very heavy volume is close to stopping volume; a quiet Hammer or Tweezer back at a low that heavy volume already defended is close to a test
VSA has no fixed formula; it adds evidence to a candle, and the next bars confirm or fail it

Frequently Asked Questions

What is Volume Spread Analysis (VSA)?

VSA is a way of reading a chart one bar at a time from three things together: the volume, the spread (the bar’s high-to-low range) and where the bar closed in that range, always against what came before it. Tom Williams developed it from the work of Richard Wyckoff. It asks whether the volume behind a bar got the price move it should have.

What does "spread" mean in VSA?

The bar’s range, from its high to its low. It is not the bid-ask spread. A wide spread means price travelled a long way during the bar; a narrow spread means it barely moved. Like volume, it is judged against the stock’s own recent bars.

What is effort vs result?

A rule from Wyckoff that VSA is built on. Volume is the effort; the price move is the result. When they match, the move is behaving normally. When heavy volume produces little movement, or a close against the move, VSA reads it as the other side absorbing the effort, which can be where a turn starts.

What is stopping volume?

During a decline, a down bar (or a few) on very high volume that closes in the middle or upper part of its range. It is read as heavy selling meeting enough buying that price could not stay at the low. It is a sign the fall is being stopped, not proof of the bottom: VSA wants a later low-volume test and an up bar to confirm it.

What is a test in VSA?

After stopping volume or a climax, price dips back toward the area of that heavy selling on low volume, often on a narrow spread or leaving a lower wick, and closes in the middle or upper part of its range. The low volume says few sellers are left. It needs an up bar after it, ideally on rising volume. A test on high volume says sellers are still there, so wait for another test; a close below the earlier low ends the read.

What is a no supply bar?

A down bar with a narrow spread on volume lower than each of the two bars before it. Price slipped, but few sellers took part. Sources differ on where it should close, and it means most after a sign of strength, near a level that matters. An up bar should follow.

Is VSA the same as the Wyckoff method?

No, but it comes from it. Wyckoff’s method reads whole phases of a market, such as accumulation in a trading range. VSA, developed later by Tom Williams, focuses on single bars and short sequences, reading each from its volume, spread and close. Many terms, such as the selling climax and the test, appear in both; VSA’s shakeout is close to what Wyckoff calls a spring.

How does VSA relate to candlestick patterns?

Closely. Both read where a bar closed in its range. A candle adds the open and the body; VSA adds the volume and the background. A Hammer at support on very heavy volume is close to stopping volume, and a quiet Hammer or Tweezer Bottom back at a low that heavy volume already defended is close to a test.

Is VSA reliable?

There are no settled figures for how often VSA signs work, so treat any quoted win rate with suspicion. VSA is read by eye: its terms are relative, practitioners draw the lines differently, and signs fail. Use it as extra evidence behind a candlestick pattern at a level that matters, confirmed by the bars after it.

Does VSA work on any market?

It needs real volume. On exchange-listed stocks, volume is the reported total of shares traded. Some markets, such as spot currencies, have no central volume figure, and the volume a platform shows there is only a rough stand-in, which weakens every VSA read.

The Bottom Line

VSA doesn’t make a candlestick pattern work. It tells you whether the volume behind the candle fits the story the candle tells.

So when you read VSA behind a bullish pattern, ask one question: “Has heavy selling been met, and have the sellers thinned out?” A heavy-volume bar that closes off its low, then a quiet dip that holds, says yes. A reversal candle on heavy volume with no test yet says not yet. A dip that closes below the low on heavy volume says the sellers are still there.

This is one of seventeen context guides in this series: Candlesticks + Moving Averages for trend structure, Candlesticks + RSI for how stretched a move is, Candlesticks + MACD for momentum, Candlesticks + ADX for trend strength, Candlesticks + Volume for conviction, Candlesticks + On-Balance Volume for volume flow, Candlesticks + Accumulation/Distribution for where the close fell, Candlesticks + Volume Profile for the prices where volume traded, Candlesticks + Anchored VWAP for the average price paid since a turn, Candlesticks + Fibonacci for retracement levels, Candlesticks + ATR for volatility, Candlesticks + Bollinger Bands for volatility bands around an average, Candlesticks + Multi-Timeframe Analysis for the weekly trend, Candlesticks + 52-Week High/Low for where price sits in its yearly range, Candlesticks + Trend Channels for where in the trend price sits, and Candlesticks + Trading Ranges for sideways markets. New to candles? Start with the candlestick basics guide.

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