Strategic Financial Management · Fundamental Analysis and Technical Analysis

Technical Analysis: Dow Theory and Chart Patterns

Updated 11 October 2026 · Fact-checked

Technical analysis forecasts future price direction from past price and volume data shown on charts. Dow Theory says markets move in three trends (primary, secondary, minor) and that two indices must confirm each other. To answer questions, identify the trend, read the chart or pattern, state the signal and give a recommendation.

Understand Technical Analysis: Dow Theory and Charts

Technical analysis studies price and volume history to predict where a price may go next. It does not try to find intrinsic value. A technician asks what the market is doing, not what the company is worth. Fundamental analysis asks the second question.

It rests on a few assumptions. The market price reflects all relevant information. Prices move in trends, and a trend tends to continue until it reverses. History tends to repeat itself because investor psychology is similar over time. Price is driven by demand and supply. Supporters accept these assumptions; critics say they conflict with the weak form of market efficiency.

Dow Theory is the base of most trend analysis. It sees three movements. The primary trend lasts from many months to years: a bull market is a rising primary trend and a bear market a falling one. The secondary trend is a correction against the primary trend, usually lasting weeks to a few months. The minor trend is day-to-day noise lasting days to a few weeks. The theory also says that a trend must be confirmed by two indices (originally the Industrial and Rail averages), that volume should rise in the direction of the trend, and that a trend continues until a clear reversal signal appears. The theory generally works on closing prices.

Charts show the data. A line chart joins closing prices and shows the trend simply. A bar chart shows open, high, low and close for each period as a vertical bar with small ticks. A candlestick chart shows the same four prices, but with a body between open and close and thin shadows to the high and low. The body colour or fill shows whether the close was above or below the open. Candlesticks make the open-close relationship easier to see.

Support is a price level where buying is strong enough to stop a fall. Resistance is a level where selling stops a rise. When price closes decisively through resistance, the old resistance often turns into new support, and the reverse holds for support. Patterns: head and shoulders has a left shoulder, a higher head and a right shoulder of about the same height as the left, with a neckline joining the lows. A fall below the neckline signals a reversal from up to down. The inverse head and shoulders is the mirror image, and a rise above its neckline signals a bullish reversal.

Key rules to remember

Dow Theory trends: Primary (months to years) > Secondary (weeks to months) > Minor (days to weeks); Secondary moves are corrections against the primary trend. Durations are approximate.
Head and shoulders: Left shoulder → Head (highest peak) → Right shoulder; neckline break = sell signal; Bearish reversal pattern. Inverse form with a neckline break upward is bullish.
Price target from head and shoulders: Target ≈ Neckline − (Head peak − Neckline); A common rule of thumb for the minimum fall, not a guarantee. Measure the head height from the neckline.
Support and resistance: Break above resistance = bullish; break below support = bearish; A level broken decisively often reverses its role. Volume confirmation makes the signal stronger.
Candlestick body: Body = difference between open and close; shadows = high and low beyond the body; Bar chart carries the same four data points but shows them as a vertical line with ticks.

How to solve Technical Analysis: Dow Theory and Charts questions

Use this method for any question on Dow Theory, charts or patterns.

1Read what is asked: define, explain, identify a pattern, or advise a trade.
2State the relevant assumption or Dow Theory principle in one line.
3Identify the primary trend first, then the secondary correction or minor noise.
4Mark support, resistance, neckline or pattern from the data given.
5Check confirmation: breakout on higher volume, closing price beyond the level, or a second index agreeing.
6Give the signal (buy, sell or hold) and, if data allow, the price target.
7Add one limitation, such as false breakouts or subjective reading, and end with a clear recommendation.

Quickest way: Trend, level, confirmation

When to use it: For MCQs and short case questions where you must read a price series or name a pattern.

Write the highs and lows in order and see whether they are rising or falling.
Rising highs and lows mean uptrend; falling highs and lows mean downtrend.
Spot the repeated price that stopped moves: that is support or resistance.
For three peaks with the middle one highest, think head and shoulders and find the neckline.
Look for the break and volume; if there is no confirmation, call it unconfirmed.

Common mistakes in Technical Analysis: Dow Theory and Charts

Treating a secondary trend as a reversal of the primary trend.
A sharp fall in a bull market looks like a bear market.
Fix: Under Dow Theory a reversal needs confirmation, such as lower highs and lower lows and confirmation by the second index. Until then it is a correction.
Calling a head and shoulders a sell signal as soon as the right shoulder forms.
Students recognise the shape and skip the neckline test.
Fix: The signal comes only when price breaks below the neckline, preferably with higher volume.
Mixing up support and resistance.
Both words sound alike and the roles reverse after a break.
Fix: Support is a floor below price, resistance is a ceiling above it. Check where price is relative to the level.
Saying a bar chart and a candlestick chart show different data.
The visuals look different.
Fix: Both show open, high, low and close. Only the presentation differs; a line chart shows closing prices only.
Measuring the head and shoulders target from the head peak instead of the neckline.
Students take the head height from the bottom of the chart.
Fix: Take head height as the head peak minus the neckline, then subtract it from the neckline break point.

Worked examples

Example 1

A stock's head and shoulders pattern shows a left shoulder at ₹480, a head at ₹520, a right shoulder at ₹482 and a neckline at ₹440. The price closes below the neckline on higher volume. Find the indicated price target and state the signal.

Show the solution

The pattern is a head and shoulders, which is a bearish reversal pattern.
Head height = ₹520 − ₹440 = ₹80.
Target ≈ Neckline − Head height = ₹440 − ₹80 = ₹360.
The break below the neckline on higher volume confirms the sell signal.

Answer: Sell signal; indicated target is about ₹360 (a rule-of-thumb estimate, not a certainty).

Example 2

Explain how a CMA candidate would apply Dow Theory when the Sensex rises for 14 months with small dips lasting three weeks, and then falls for two weeks while the Nifty makes a new high.

Show the solution

The 14-month rise is the primary trend, which is a bull market.
The three-week dips are secondary trends, which are corrections against the primary trend.
The two-week fall is a secondary or minor move, as it is short.
The Nifty making a new high does not confirm a reversal because the two indices do not agree on a downturn.
Conclusion: the primary uptrend continues until both indices show lower highs and lower lows.

Answer: The bull trend is intact. The fall is a correction, not a reversal, and no sell signal arises until both indices confirm it.

Exam tips

Write the three Dow trends with approximate durations and say that confirmation is needed. This is an easy way to score on theory questions.
In pattern questions, always mention the neckline and volume; they carry the marks.
If asked for a comparison of charts, use a short table-style list in words: data shown, ease of reading and use.
Close the answer with a limitation of technical analysis: subjective reading and conflict with market efficiency.
In MCQs, check whether the question refers to a reversal pattern or a continuation of the trend before choosing.

Practice questions from Fundamental Analysis and Technical Analysis

Technical Analysis: Dow Theory and Charts in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Technical Analysis: Dow Theory and Charts: frequently asked questions

What are the assumptions of technical analysis?

Price reflects all available information, prices move in trends that tend to persist, and history tends to repeat because investor behaviour is similar. Price changes arise from demand and supply.

What is the difference between a bar chart and a candlestick chart?

Both show open, high, low and close for each period. A bar chart uses a vertical line with ticks, while a candlestick uses a body and shadows, which makes the open-close relationship easier to see.

What do support and resistance levels mean?

Support is a price level where buying tends to stop a fall. Resistance is a level where selling tends to stop a rise. A decisive break often turns the old level into its opposite.

Is head and shoulders a bullish or bearish pattern?

The standard pattern is bearish and signals a reversal from an uptrend once price breaks the neckline. The inverse head and shoulders is bullish.