作者:Robert D. Edwards & John Magee
Technical Analysis of Stock Trends — Complete Implementation Specification
Based on Robert D. Edwards & John Magee, Technical Analysis of Stock Trends (10th Edition)
Table of Contents
- Overview — Philosophy of Technical Analysis
- The Dow Theory
- Chart Construction & Reading
- Reversal Patterns
- Continuation Patterns
- Gap Analysis
- Volume Analysis
- Support and Resistance
- Trendline Analysis
- Moving Averages
- Stop-Loss and Risk Management
- Dow Theory Implementation
- Common Mistakes
- Complete Trade Lifecycle Example
- Key Quotes
1. Overview — Philosophy of Technical Analysis
Core Premise
The market price of a stock reflects everything that is knowable about that stock at any given
moment. All fundamental data, insider knowledge, institutional positioning, and mass psychology
are already embedded in price and volume action. The technician does not need to know why
prices move — only that they move, and in recognizable, repeatable patterns.
Three Foundational Assumptions
Market action discounts everything. Price is the final arbiter. Earnings reports, interest
rate decisions, geopolitical events — all of these are priced in before the public becomes
aware of them, because informed participants act first.
Prices move in trends. A stock in motion tends to stay in motion. Trends persist until
a definite signal of reversal occurs. The primary job of the technician is to identify the
trend early and ride it until the evidence says it has ended.
History repeats itself. Chart patterns recur because human psychology does not change.
Fear, greed, hope, and despair produce the same footprints on the tape generation after
generation.
What Technical Analysis Is NOT
- It is not forecasting with certainty. It is probability assessment.
- It does not replace risk management. Every signal can fail.
- It does not work on every stock at every time. Patterns are clearest in liquid, actively
traded issues.
The Edwards & Magee Approach
Edwards and Magee focus almost exclusively on price-and-volume bar chart analysis. Their
method is visual pattern recognition backed by strict rules for confirmation, measuring
implications, and stop placement. The book is fundamentally a decision-making framework:
when to act, how much to expect, and when to admit the analysis was wrong.
2. The Dow Theory
The Six Tenets
Tenet 1: The Averages Discount Everything.
The Dow Jones Industrial Average and the Transportation Average, taken together, reflect the
sum total of all market knowledge and expectation. No event is too obscure to escape the
market's pricing mechanism.
Tenet 2: The Market Has Three Trends.
- Primary trend — The major bull or bear market lasting one to several years. This is the
tide.
- Secondary reaction — Corrections against the primary trend lasting three weeks to three
months, typically retracing 33% to 66% of the prior primary swing. This is the wave.
- Minor fluctuation — Day-to-day noise lasting less than three weeks. This is the ripple.
It is of no forecasting value and should be ignored for trend analysis.
Tenet 3: Primary Trends Have Three Phases.
- Bull market: (a) Accumulation — smart money buys against prevailing pessimism.
(b) Public participation — prices advance on improving earnings and sentiment.
(c) Excess/distribution — speculation runs wild, the public piles in, informed money exits.
- Bear market: (a) Distribution — informed sellers unload to eager buyers.
(b) Panic — prices drop sharply, volume surges, bad news accelerates selling.
(c) Despair — prolonged decline on decreasing volume, quality stocks sold last.
Tenet 4: The Averages Must Confirm Each Other.
A valid primary trend signal requires both the Industrials and Transports to make new highs
(bull) or new lows (bear) in reasonable proximity. A new high in one average alone is
suspect and must not be acted upon until confirmed. The closer the confirmation in time,
the stronger the signal.
Tenet 5: Volume Must Confirm the Trend.
In a bull market, volume should expand on advances and contract on declines. In a bear
market, volume should expand on declines and contract on rallies. Volume is a secondary
indicator — price takes precedence — but divergence between price and volume is an
early warning.
Tenet 6: A Trend Is Assumed to Remain in Effect Until It Gives Definite Signals of Reversal.
This is the single most important tenet for implementation. Do not anticipate reversals. Wait
for confirmed signals. The burden of proof is always on the reversal, not the continuation.
Implementation Rules for Dow Theory Signals
| Signal |
Condition |
| Bull market confirmed |
Both Industrials and Transports make higher highs above prior secondary reaction peaks |
| Bear market confirmed |
Both Industrials and Transports make lower lows below prior secondary reaction troughs |
| Non-confirmation (warning) |
One average makes new high/low but the other fails to confirm within a reasonable window |
| Secondary reaction identified |
Decline of 33-66% of prior primary advance lasting 3+ weeks on declining volume |
3. Chart Construction & Reading
Bar Charts
The daily bar chart is the primary analytical tool. Each bar records:
- High — top of the vertical line
- Low — bottom of the vertical line
- Close — horizontal tick on the right side of the bar
- Volume — vertical bars along the bottom axis
Construction rules:
- Use arithmetic (linear) scale for short-term charts.
- Use semi-logarithmic (ratio) scale for long-term charts, so that equal percentage moves
appear as equal vertical distances.
- Volume bars are plotted directly below corresponding price bars.
- Mark ex-dividend dates and stock splits clearly.
Point-and-Figure Charts
Point-and-figure charts strip out time and focus purely on price movement:
- X columns represent rising prices.
- O columns represent falling prices.
- A new column begins only when price reverses by a specified amount (the "box size"
multiplied by the "reversal criterion," typically 3 boxes).
- Advantages: removes noise, makes horizontal congestion zones visually obvious, provides
built-in measuring targets (horizontal count method).
Support and Resistance — Identification
- Support — a price level where buying pressure is sufficient to halt a decline. Identified
by previous lows, congestion zones, and round numbers.
- Resistance — a price level where selling pressure is sufficient to halt an advance.
Identified by previous highs, congestion zones, and round numbers.
- The more times a level is tested without being broken, the more significant it becomes.
- The longer a level has been in effect, the more significant it becomes.
- The greater the volume at a level, the more significant it becomes.
Trendlines — Basic Drawing Rules
- An uptrend line connects two or more successive higher lows. The line is drawn below
price.
- A downtrend line connects two or more successive lower highs. The line is drawn above
price.
- A trendline requires at least two points to draw and a third point to validate.
- The significance of a trendline increases with: number of touches, duration, steepness
(gentler slopes are more significant than steep ones).
Channel Lines
- A channel (return line) is drawn parallel to the trendline on the opposite side of price.
- In an uptrend, the channel line connects rally highs above the trendline.
- In a downtrend, the channel line connects reaction lows below the trendline.
- Failure of price to reach the channel line is an early warning of trend weakening.
- A break of the channel line suggests acceleration of the trend (often unsustainable).
4. Reversal Patterns
4.1 Head and Shoulders Top
Identification Rules:
- Stock has been in an established uptrend.
- Left Shoulder: Price rallies to a new high on heavy volume, then declines on lighter volume.
- Head: Price rallies above the left shoulder high on volume that may be heavy but is often
less than the left shoulder rally. Price then declines back through the left shoulder peak
level.
- Right Shoulder: Price rallies again but fails to reach the head's high. Volume is noticeably
lighter than on both the left shoulder and head rallies.
- Neckline: Connect the lows of the decline after the left shoulder and the decline after the
head. This line does not need to be horizontal — it can slope up or down.
- Breakout: Price closes below the neckline on increased volume.
Volume Pattern:
- Left shoulder rally: heaviest volume
- Head rally: moderate to heavy, but typically less than left shoulder
- Right shoulder rally: distinctly lighter — this is the critical volume clue
- Neckline break: volume should expand sharply
Measuring Formula:
- Measure the vertical distance from the top of the head to the neckline (at the point
directly below the head).
- Project that distance downward from the point where price breaks the neckline.
- This is the minimum expected move.
Entry Trigger:
- Enter short (or sell long) on a close below the neckline confirmed by above-average volume.
- Conservative approach: wait for a pullback to test the broken neckline from below before
entering.
Stop Placement:
- Place the stop above the right shoulder high.
- More aggressive: place the stop just above the neckline after breakout.
Failure Condition:
- If price closes back above the neckline after breaking below it (especially on heavy
volume), the pattern has failed. Exit immediately. Failed H&S patterns often produce
powerful moves in the opposite direction.
4.2 Inverse Head and Shoulders (Head and Shoulders Bottom)
Identification Rules:
Mirror image of the H&S top, with one critical difference regarding volume:
- Stock has been in an established downtrend.
- Left Shoulder: Price declines to a new low, then rallies.
- Head: Price declines below the left shoulder low, then rallies back.
- Right Shoulder: Price declines again but does not reach the head's low.
- Neckline: Connect the rally highs between the shoulders and head.
- Volume is absolutely essential on the breakout. At tops, stocks can fall of their own
weight. At bottoms, stocks require buying power (volume) to rise. A neckline break on
light volume is deeply suspect.
Measuring Formula:
Same as regular H&S — distance from head low to neckline, projected upward from breakout
point.
Entry Trigger:
- Enter long on a close above the neckline confirmed by a strong surge in volume.
- Wait for a throwback to the neckline for a safer entry if you missed the initial break.
Stop Placement:
- Below the right shoulder low.
4.3 Double Tops and Bottoms
Double Top Identification:
- Price advances to a high (first peak) and declines.
- Price advances again to approximately the same level (within 3%) as the first peak.
- The two peaks should be separated by at least several weeks — two peaks within a few
days are simply resistance, not a double top.
- Volume on the second peak is typically lighter than on the first.
- Pattern is confirmed only when price breaks below the valley between the two peaks.
Double Bottom Identification:
- Mirror image of double top.
- The second low should hold at or slightly above the first low.
- Volume must expand on the breakout above the middle rally peak.
- Minimum separation between lows: several weeks.
Measuring Formula:
- Distance from the peak(s) to the valley between them, projected from the breakout point.
Common Error:
Do not call a double top until the valley is broken. Two peaks at the same level are just
resistance until confirmed by breakdown. Many apparent double tops resolve upward.
Entry and Stop:
- Double top: sell on break below valley; stop above second peak.
- Double bottom: buy on break above middle peak; stop below second low.
4.4 Triple Tops and Bottoms
Identification:
- Three roughly equal peaks (or troughs) separated by two valleys (or rallies).
- Volume tends to diminish on each successive test of the resistance (or support) level.
- Pattern is confirmed only on the break of the level connecting the intervening lows (or
highs).
Distinguishing from Rectangles:
- Triple tops/bottoms are reversal patterns; rectangles can be continuation or reversal.
- Triple tops occur after an uptrend; rectangles can form in any context.
- Focus on volume: triple top volume declines with each peak, signaling exhaustion.
Measuring Formula:
- Same principle — height of the pattern projected from breakout.
4.5 Rounding Tops and Bottoms (Saucers)
Characteristics:
- Very gradual, curved reversal. No sharp defining points.
- Price arcs slowly from one direction to the other over weeks to months.
- Volume typically follows the same saucer shape: heavy at the start, drying up at the
center, expanding again as the new trend emerges.
- Rounding bottoms are more common and more reliable than rounding tops.
Implementation Challenge:
- Difficult to identify in real time because there is no clear breakout point.
- Best used as context: if you see a rounding pattern developing, look for a smaller
breakout pattern (flag, small H&S) on the right side to provide a precise entry.
No Specific Measuring Formula:
- Saucers do not have a clean measuring implication. The broader and deeper the saucer,
the more significant the expected move.
4.6 V-Formations / Spike Reversals
Characteristics:
- Sharp, sudden reversal with little or no warning.
- Typically occur on a climax day: huge volume, wide range, reversal close.
- V-tops: explosive final rally, often a gap up, followed by immediate reversal.
- V-bottoms (selling climaxes): panic selling, huge volume, often a gap down, followed by
sharp recovery.
Implementation Challenge:
- Nearly impossible to trade at the exact turning point.
- Best used as a signal to re-evaluate: if you are long and a V-top occurs, tighten stops
immediately. If you are short and a selling climax occurs, cover shorts.
Confirmation:
- Look for a secondary test of the spike level (a "handle" or small consolidation) within
a few weeks. This secondary test often provides a safer entry point.
Summary Table — Reversal Patterns
| Pattern |
Min Duration |
Volume Signature |
Measuring Target |
Reliability |
| H&S Top |
1-3 months |
Declining on right shoulder |
Head-to-neckline distance |
High |
| H&S Bottom |
1-3 months |
Must expand on breakout |
Head-to-neckline distance |
High |
| Double Top |
3+ weeks between peaks |
Lighter on 2nd peak |
Peak-to-valley distance |
Moderate-High |
| Double Bottom |
3+ weeks between lows |
Expand on breakout |
Valley-to-peak distance |
Moderate-High |
| Triple Top/Bottom |
2+ months |
Declining on each test |
Height of pattern |
High |
| Rounding |
Weeks to months |
Saucer-shaped volume |
No specific formula |
Moderate |
| V-Formation |
Days |
Climax volume spike |
No specific formula |
Low (hard to trade) |
5. Continuation Patterns
5.1 Symmetrical Triangle
Identification:
- Two converging trendlines: a declining upper line (lower highs) and a rising lower line
(higher lows).
- Minimum of four reversal points needed (two touching each line).
- Volume should contract as the pattern develops, reflecting diminishing conviction.
- Breakout should occur between one-half and three-quarters of the way from the base to
the apex. Breakouts near the apex are unreliable.
Breakout Rules:
- A valid breakout is a close beyond the boundary line (not just an intraday penetration).
- Volume must expand on the breakout, especially for upside breaks.
- Downside breakouts need not show immediate volume expansion (gravity effect), but
expanding volume adds confidence.
Measuring Formula:
- Method 1: Measure the widest part of the triangle (the base, from the first high to the
first low). Project that distance from the breakout point.
- Method 2: Draw a line parallel to the lower trendline, starting from the first high point
of the pattern. The price target is where this line intersects the time axis following
breakout.
Important Notes:
- Symmetrical triangles are inherently neutral — they can break in either direction.
- The presumption is continuation of the prior trend, but always wait for the breakout.
- False breakouts occur roughly 25% of the time. Use a penetration filter (see Section 9).
5.2 Ascending Triangle
Identification:
- Flat (horizontal) upper boundary — price hits resistance at the same level repeatedly.
- Rising lower boundary — each successive low is higher than the previous one.
- Buyers are progressively more aggressive; sellers are defending a fixed level.
- Volume contracts as the pattern forms.
Directional Bias:
- Bullish. The ascending triangle usually breaks upward.
- Failure (downside break) occurs in roughly 1 in 4 cases and can be sharp.
Breakout Rules:
- Breakout above the flat resistance line on above-average volume.
- Expect a pullback to the resistance-turned-support level.
Measuring Formula:
- Height of the triangle (from the flat resistance to the lowest point of the pattern),
projected upward from the breakout point.
5.3 Descending Triangle
Identification:
- Flat (horizontal) lower boundary — price hits support at the same level repeatedly.
- Declining upper boundary — each successive high is lower than the previous one.
- Sellers are progressively more aggressive; buyers are defending a fixed level.
Directional Bias:
- Bearish. The descending triangle usually breaks downward.
Breakout and Measuring:
- Mirror image of ascending triangle rules.
5.4 Rectangles
Identification:
- Price oscillates between a clearly defined horizontal support and resistance.
- At least two touches of each boundary.
- Volume tends to be heavier on moves in the direction of the eventual breakout.
Directional Bias:
- Neutral. Rectangles can be continuation or reversal. Lean toward continuation of the
prior trend.
Measuring Formula:
- Height of the rectangle, projected from the breakout point.
Trading Within the Rectangle:
- Aggressive traders can buy at support and sell at resistance within the pattern, using
tight stops just beyond the boundaries. This is counter-trend trading and carries
higher risk.
5.5 Flags and Pennants
Identification:
- Both form after a sharp, steep advance or decline (the "flagpole").
- Flag: a small, tight parallelogram that slopes against the prior move. In an uptrend,
the flag slopes downward. In a downtrend, it slopes upward.
- Pennant: a small symmetrical triangle forming after the flagpole.
- Both are short-duration patterns — typically 1 to 3 weeks.
- Volume dries up dramatically during the pattern and then surges on the breakout.
The Half-Mast Rule:
- Flags and pennants tend to form at approximately the midpoint of the total move.
- To estimate the remaining move: measure the flagpole (from the start of the sharp move
to the beginning of the flag/pennant). Project that same distance from the breakout point.
- This is the "half-mast" measuring principle.
Entry Trigger:
- Buy on breakout from the flag/pennant boundary in the direction of the prior trend.
- Volume confirmation is important.
Stop Placement:
- Below the lowest point of the flag (for bullish flags).
- Above the highest point of the flag (for bearish flags).
Failure:
- If a flag or pennant lasts more than 3-4 weeks, it is no longer a flag — reclassify it.
- If the breakout goes against the prior trend, the implications are bearish (from a bull
flag) or bullish (from a bear flag).
5.6 Wedges
Rising Wedge:
- Both trendlines slope upward, but the lower line is steeper than the upper.
- Price range narrows as the pattern develops.
- Volume contracts.
- Bearish implication: usually breaks downward, whether in an uptrend (reversal) or
downtrend (continuation).
- Takes longer to form than flags/pennants — typically 3 to 6 weeks.
Falling Wedge:
- Both trendlines slope downward, but the upper line is steeper than the lower.
- Bullish implication: usually breaks upward.
Measuring Formula:
- No clean measuring formula. The minimum expected move is a return to the level where
the wedge began (the widest point).
Summary Table — Continuation Patterns
| Pattern |
Typical Duration |
Bias |
Volume |
Measuring Method |
| Symmetrical Triangle |
1-3 months |
Continuation |
Contracts, expands on break |
Base width from breakout |
| Ascending Triangle |
1-3 months |
Bullish |
Contracts, expands on break |
Height from breakout |
| Descending Triangle |
1-3 months |
Bearish |
Contracts, expands on break |
Height from breakout |
| Rectangle |
1-3 months |
Continuation |
Mixed; heavier toward break dir |
Height from breakout |
| Flag |
1-3 weeks |
Continuation |
Dries up, surges on break |
Flagpole = remaining move |
| Pennant |
1-3 weeks |
Continuation |
Dries up, surges on break |
Flagpole = remaining move |
| Rising Wedge |
3-6 weeks |
Bearish |
Contracts |
Return to wedge origin |
| Falling Wedge |
3-6 weeks |
Bullish |
Contracts |
Return to wedge origin |
6. Gap Analysis
Types of Gaps
Common (Area) Gap:
- Occurs within a trading range or congestion zone.
- No particular significance — typically filled quickly.
- Volume: no notable change.
- Action: Ignore. Do not trade based on common gaps.
Breakaway Gap:
- Occurs at the completion of a pattern (out of a base, through support/resistance).
- Marks the beginning of a significant move.
- Volume: heavy, often the heaviest volume in recent history.
- Action: Trade in the direction of the gap. Breakaway gaps are rarely filled in the short
term. If the gap is filled quickly, the breakout has failed.
- Often the first gap in a trending move.
Runaway (Measuring) Gap:
- Occurs roughly midway through a trending move.
- Represents a surge of new buying (or selling) interest joining the trend.
- Volume: heavy but may be moderate relative to the breakaway gap.
- Action: Use as a measuring tool — the distance from the start of the move to the gap
is projected from the gap to estimate the ultimate target.
- The "measuring" name comes from this midpoint characteristic.
Exhaustion Gap:
- Occurs near the end of a move, after the trend has been underway for a considerable time.
- Often accompanied by climax volume.
- Distinguished from runaway gaps only in retrospect (by what happens next).
- Action: Watch for a reversal. If price gaps up on huge volume and then reverses within
a few days to close below the gap, this is a strong reversal signal.
Island Reversal:
- An exhaustion gap followed by a breakaway gap in the opposite direction, isolating a
cluster of trading days as an "island" on the chart.
- Powerful reversal signal. The two gaps together mark the end of one trend and the
beginning of another.
Gap Identification Decision Tree
1. Is the gap within a consolidation area?
YES → Common gap (ignore)
NO → Continue to step 2
2. Does the gap break out of a defined chart pattern?
YES → Breakaway gap (trade the direction)
NO → Continue to step 3
3. Is the trend already well established?
NO → Likely breakaway gap
YES → Continue to step 4
4. Has the move been underway for a long time with multiple gaps already?
NO → Likely runaway/measuring gap
YES → Likely exhaustion gap (watch for reversal)
7. Volume Analysis
Core Principles
Volume Confirms Trend Direction:
- In an uptrend: volume should expand on up days and contract on down days.
- In a downtrend: volume should expand on down days and contract on up days.
- When this relationship breaks down, the trend is weakening.
Volume Leads Price:
- Volume often increases before the price breakout occurs. A buildup of volume within a
pattern, particularly near the boundary, suggests an imminent breakout.
- Volume often decreases before a reversal occurs (divergence).
Volume at Tops vs. Bottoms
Tops:
- Distribution tops often feature high, churning volume — lots of activity but no upward
progress. This is smart money selling to eager buyers.
- The final rally may show decreasing volume, indicating fading demand.
- Climax tops: single day of explosive volume, widest range of the move, reversal close.
Bottoms:
- Selling climax: a panic day with extreme volume and a wide range, often followed by
an automatic rally and then a secondary test on lighter volume.
- Accumulation bottoms: volume is quiet and uninteresting. Price drifts sideways. Smart
money buys silently over time.
- The breakout from a bottom MUST have strong volume or it cannot be trusted.
On-Balance Volume (OBV) — Concept
Introduced by Joseph Granville, referenced in later editions:
- If today's close > yesterday's close: add today's volume to running OBV total.
- If today's close < yesterday's close: subtract today's volume from running OBV total.
- The absolute value of OBV is meaningless. The direction and pattern of OBV relative to
price is what matters.
- OBV rising while price is flat: accumulation (bullish).
- OBV falling while price is flat: distribution (bearish).
- OBV confirming price: trend is healthy.
Climax Volume Signals
Buying Climax:
- Occurs after an extended advance.
- Volume spikes to the highest level in the entire move.
- Price range is extremely wide.
- Close is near the high (or, ominously, near the low despite the wide range).
- Not an automatic sell signal, but demands immediate attention and tighter stops.
Selling Climax:
- Occurs after an extended decline.
- Volume spikes dramatically.
- Price range is extremely wide.
- Close is near the low (or, promisingly, well off the low).
- Marks the potential end of the decline. Wait for secondary test before buying.
8. Support and Resistance
How to Identify Levels
Previous highs and lows. Any significant swing high or low becomes a potential
support/resistance level. The more prominent the swing, the more significant the level.
Congestion zones. Areas where price traded back and forth for an extended period.
The more volume transacted at a level, the more committed participants are to that price,
and the more significant it becomes as support or resistance.
Round numbers. Psychological significance: $10, $25, $50, $100. Many orders cluster
at round numbers, creating natural support and resistance.
Previous gap boundaries. The edges of unfilled gaps serve as support and resistance.
Role Reversal Principle
This is one of the most important concepts in the book:
- Old resistance, once decisively broken, becomes new support.
- Old support, once decisively broken, becomes new resistance.
Mechanism: Participants who sold near resistance now regret selling and will buy on any
pullback to that level (former resistance becomes support). Participants who bought near
support and watched it break now want to "get out even" and will sell on any rally back
to that level (former support becomes resistance).
Multiple Test Significance
- The more times a support or resistance level is tested without being broken, the more
significant the eventual break will be.
- However, each test also weakens the level slightly by absorbing the orders there.
- A level tested 5 times is more likely to break on the 6th attempt than a level tested
only twice — but if it holds, it is even more significant.
Implementation Rules
For each price level L:
significance_score = (number_of_touches * 2)
+ (total_volume_at_level / average_volume)
+ (time_since_first_touch_in_weeks / 4)
+ (3 if round_number else 0)
If significance_score > threshold:
Mark L as a significant support/resistance level.
9. Trendline Analysis
Drawing Rules
Two-Point Trendline:
- Connect any two significant lows (uptrend) or highs (downtrend).
- This is a tentative trendline — it has not yet been validated.
Three-Point Trendline:
- When a third point touches or comes very close to the line, the trendline is validated.
- A validated trendline is a significant analytical tool.
- The more points that touch the line, the more significant it becomes.
Rules for Drawing:
- Use closing prices (more conservative and reliable) or extreme prices (more inclusive).
Edwards and Magee use extreme prices (high/low) for trendlines.
- Do not adjust a trendline to fit unless there is a clear reason. If a trendline is broken,
draw a new one rather than repositioning.
- Steeper trendlines are less sustainable. A very steep uptrend line will inevitably be broken
and replaced by a gentler one.
The Fan Principle
When a steep trendline is broken:
- Draw the first trendline from the original low.
- When broken, draw a second trendline from the same low to the next reaction low.
- When the second is broken, draw a third trendline to the next reaction low.
- The breaking of the third fan line is typically a reliable signal of trend reversal.
The fan principle works because each successive trendline is less steep, representing a
deceleration of momentum. When even the gentlest sustainable trendline breaks, the trend
is exhausted.
Speed Resistance Lines
Developed by Edson Gould, incorporated in later editions:
- Take the total advance (or decline) from the start of the move to the peak (or trough).
- Divide the vertical distance into thirds.
- Draw lines from the starting point of the move through the 1/3 and 2/3 levels.
Interpretation:
- In a correction, price usually stops at the 2/3 speed line.
- If the 2/3 line is broken, price typically falls to the 1/3 line.
- If the 1/3 line is broken, the move has likely fully reversed.
Trendline Penetration Rules
Not every trendline break is significant. Edwards and Magee offer several filters:
Percentage Filter (1-3% Rule):
- A trendline break is not valid unless price closes beyond the line by at least 1% (for
conservative traders, 3%).
- Calculate:
(close - trendline_value) / trendline_value * 100.
- If the result exceeds the filter threshold, the break is confirmed.
Two-Day Rule:
- A trendline break is not valid unless price closes beyond the line for at least two
consecutive trading days.
- This eliminates single-day false breaks ("whipsaws").
Volume Filter:
- An upside trendline break accompanied by above-average volume is more reliable.
- A downside break need not have immediate volume confirmation but should show expanding
volume within a few days.
Combined Filter (recommended approach):
- Require either (a) a 3% penetration, or (b) two consecutive closes beyond the line,
or (c) a 1% penetration with above-average volume. Any one of these confirms the break.
10. Moving Averages
Types
Simple Moving Average (SMA):
- Sum of the last N closing prices divided by N.
- Gives equal weight to all data points.
- Lagging indicator by design.
Weighted Moving Average (WMA):
- Recent prices are given more weight (e.g., the most recent price is multiplied by N,
the previous by N-1, etc., then divided by the sum of the weights).
- More responsive to recent price action than SMA.
Exponential Moving Average (EMA):
EMA_today = (Close - EMA_yesterday) * multiplier + EMA_yesterday
multiplier = 2 / (N + 1)
- Never fully drops off old data — all past prices have some influence.
- Most popular choice for most applications due to smooth responsiveness.
Common Periods and Uses
| Period |
Use |
| 10-day |
Short-term trading, capturing minor swings |
| 20-day |
Approximately one trading month; popular for swing traders |
| 50-day |
Intermediate trend; institutional benchmark. A stock above its 50-day is "healthy" |
| 150-day |
Long-term trend filter; Stan Weinstein's stage analysis uses 30-week (~150-day) |
| 200-day |
The gold standard for the primary trend. Widely watched by institutions |
Crossover Systems
Price-MA Crossover:
- Buy when price closes above the MA. Sell when price closes below the MA.
- Works well in trending markets. Gets whipsawed in ranges.
Dual MA Crossover:
- Buy when the shorter MA crosses above the longer MA ("golden cross").
- Sell when the shorter MA crosses below the longer MA ("death cross").
- Common pairs: 10/50, 20/50, 50/200.
- Reduces whipsaws compared to price-MA crossover but increases lag.
Triple MA System:
- Use three MAs (e.g., 5, 20, 60).
- All three aligned in the same direction = strong trend.
- The fastest MA leads the turns.
Moving Average Envelopes
- Plot bands above and below a moving average at a fixed percentage distance (e.g., MA +/- 3%).
- Price reaching the upper envelope is "overbought" (in the context of the trend).
- Price reaching the lower envelope is "oversold."
- In strong trends, price can ride the envelope for extended periods — do not use envelopes
as counter-trend signals in trending markets.
Edwards & Magee's Caution on Moving Averages
The authors emphasize that moving averages are secondary tools. Chart patterns and trendlines
take precedence. Moving averages are useful for:
- Confirming trend direction
- Providing objective support/resistance levels
- Systematizing entries and exits when pattern analysis is ambiguous
Moving averages are NOT useful for:
- Predicting reversals (they are inherently lagging)
- Trading in congestion zones (they produce constant false signals)
11. Stop-Loss and Risk Management
Pattern-Based Stop Placement
The single most reliable method of stop placement is to use the chart pattern itself:
| Situation |
Stop Location |
| Long after H&S bottom breakout |
Below the right shoulder low |
| Long after double bottom breakout |
Below the second low |
| Long after ascending triangle breakout |
Below the last reaction low within the triangle |
| Long after flag breakout |
Below the lowest point of the flag |
| Short after H&S top breakdown |
Above the right shoulder high |
| Short after descending triangle breakdown |
Above the last rally high within the triangle |
The logic is simple: if the pattern is valid, price should not return to the other side of the
pattern. If it does, the pattern has failed and you must exit.
Percentage Filters
- Maximum risk per trade: Edwards and Magee do not specify a fixed percentage, but modern
practice derived from their work suggests 1-2% of total capital per trade.
- Stop distance filter: If the pattern-based stop is more than 8-10% from the entry, the
risk/reward ratio is often unfavorable. Either wait for a tighter entry (e.g., on a pullback)
or skip the trade.
Progressive Stop Strategy
- Initial stop: Pattern-based (as above).
- After first profit target (1R): Move stop to breakeven.
- Trailing stop: Use trendline analysis to trail the stop. As a new higher low forms in
an uptrend, raise the stop to just below that low.
- Final exit: Pattern-based exit signal (reversal pattern, trendline break, or target
reached).
Time Filters
- If a breakout does not follow through within 3-5 days, be suspicious.
- If price has not reached the first minor target within 2-3 weeks, consider reducing position.
- Patterns that take too long to "work" are often degrading into new, ambiguous patterns.
12. Dow Theory Implementation
Bull Market Identification
A bull market is confirmed when:
- Both the DJIA and DJTA make a secondary reaction low (decline of 33-66% of the prior
advance, lasting 3+ weeks).
- Both averages then rally and exceed the peak that preceded the secondary reaction.
- Confirmation must occur in both averages, though not necessarily on the same day.
Implementation Logic:
state = BEAR (default)
On each new high in DJIA:
Check: Has DJTA also made a new high since the last secondary reaction?
If YES: state = BULL
On each new low in DJIA:
Check: Has DJTA also made a new low since the last secondary rally?
If YES: state = BEAR
Bear Market Identification
A bear market is confirmed when:
- Both averages rally from a decline (secondary rally within a bear trend).
- Both averages then decline below the low that preceded the rally.
- Again, both must confirm.
Confirmation and Divergence
- Confirmation: Both averages making new highs (or lows) together. The trend is strong.
- Non-confirmation (divergence): One average makes a new high but the other fails. This
is a warning, not an automatic signal. It means the trend is losing breadth.
- Divergences can persist for weeks or months. They indicate vulnerability but do not
predict timing.
Modern Application Notes
- Many practitioners substitute the S&P 500 for the DJIA and a transportation ETF (IYT)
or the DJTA for the Transportation Average.
- The principles apply to any pair of related indexes that should logically move together
(e.g., semiconductors and technology).
13. Common Mistakes
Pattern Recognition Errors
Seeing patterns that aren't there. Confirmation bias is the technician's greatest enemy.
A pattern must meet ALL identification criteria before it is valid. If you are squinting
and rationalizing, it is not a pattern.
Acting before confirmation. A head and shoulders is not a head and shoulders until the
neckline breaks. A double top is not a double top until the valley breaks. Anticipating
completion is the road to losses.
Ignoring volume. A breakout without volume confirmation (especially for upside moves)
is unreliable. Volume is the lie detector of the market.
Using patterns on unsuitable stocks. Very thinly traded stocks, microcaps, and stocks
under heavy manipulation do not form reliable patterns. Stick to liquid, actively traded
issues.
Confusing time frames. A pattern on a daily chart and a pattern on a weekly chart carry
different weight. Always know which time frame you are trading.
Trend Analysis Errors
Fighting the primary trend. Counter-trend trades in patterns that oppose the primary
trend have a much lower success rate. Trade in the direction of the primary trend whenever
possible.
Redrawing trendlines to avoid admitting a break. If the trendline is broken, accept it.
Draw a new one from scratch if the trend resumes.
Ignoring the fan principle. When steep trendlines break, they are often replaced by
gentler ones. The third fan line break is the definitive signal.
Risk Management Errors
No stop-loss. Every trade must have a predefined exit point for a losing scenario.
Without a stop, a small loss becomes a large one, and a large one becomes catastrophic.
Moving the stop further away. The stop is set based on the pattern's invalidation point.
If you move it to give the trade "more room," you are overriding your analysis with hope.
Position sizing based on conviction rather than risk. Size positions based on where the
stop is, not on how confident you feel. The market does not care about your conviction.
Selling winners too early while holding losers. The disposition effect. Let winners
run to their measured targets. Cut losers at the stop.
14. Complete Trade Lifecycle Example
Scenario: Bullish Trade from Head and Shoulders Bottom
Step 1: Context Assessment
- Check the primary trend: the broad market (S&P 500) is above its 200-day MA and has
confirmed a bull market by Dow Theory. Primary trend is UP.
- The stock is in the sector currently showing relative strength.
Step 2: Pattern Identification
- Stock XYZ has been declining from $80 to $50 over six months.
- Left shoulder forms: decline to $52, rally to $60.
- Head forms: decline to $48 (lower low), rally to $59.
- Right shoulder forms: decline to $53 (higher than head), currently rallying.
- Draw the neckline: connecting $60 and $59, gently sloping down. Neckline is near $58.50
at the current time projection.
- Volume: declining throughout the pattern. Volume on the right shoulder rally is beginning
to pick up.
Step 3: Measuring Target
- Head low: $48. Neckline at point below head: approximately $59.50.
- Pattern height: $59.50 - $48.00 = $11.50.
- Minimum upside target: $58.50 (breakout point) + $11.50 = $70.00.
Step 4: Risk Assessment
- Entry on neckline break: approximately $59.
- Stop below right shoulder: $52.
- Risk per share: $59 - $52 = $7.
- Reward: $70 - $59 = $11.
- Risk/reward ratio: 1:1.57. Acceptable (above 1:1.5 minimum).
- Position size: If risking 1% of $100,000 account = $1,000 risk. $1,000 / $7 = 142 shares.
Step 5: Entry Execution
- Price closes above $59 on volume that is 2x the 50-day average. Breakout confirmed.
- Buy 142 shares at $59.20 (market open next day, slight slippage).
- Set stop-loss at $51.80 (just below right shoulder low of $53, with small buffer).
Step 6: Trade Management
- Day 3: Price pulls back to $58.80 (throwback to neckline). Hold — this is normal and
expected. Stop remains at $51.80.
- Week 2: Price advances to $63. Move stop to breakeven ($59.20). The throwback held and
the trend is resuming.
- Week 4: Price hits $66, forms a small bull flag. Trail stop to $63 (below flag).
- Week 6: Price reaches $70 (measured target). Sell half the position (71 shares) at $70.
Trail stop on remaining shares to $67.
Step 7: Exit
- Week 8: Price reaches $74. Trail stop to $70 (just below the measured target, now
acting as support).
- Week 10: Price forms a small double top at $76, breaks below $73. Sell remaining 71
shares at $73.
Result:
- First half: bought $59.20, sold $70.00. Profit = $10.80 x 71 = $766.80.
- Second half: bought $59.20, sold $73.00. Profit = $13.80 x 71 = $979.80.
- Total profit: $1,746.60 on $1,000 risk = 1.75R.
16. Key Quotes
"The market is always right. The tape tells the truth. The chart merely records what has
already happened."
"It is much more important to know when to buy than what to buy."
"Volumes go with the trend. In a bull market, volume increases on rallies and decreases
on reactions. In a bear market, volume increases on declines and decreases on rallies."
"A trend, once established, has a greater probability of continuing than of reversing.
This is the fundamental tenet of technical analysis."
"Support and resistance levels reverse their roles once they are penetrated by a significant
amount. Old support becomes new resistance, and old resistance becomes new support."
"A Head-and-Shoulders pattern is not completed until the neckline is decisively broken.
Until that happens, the possibility remains that the pattern is something other than an
H&S reversal."
"The flag flies at half-mast."
"The most dangerous word in the speculator's vocabulary is 'this time it's different.'"
"Volume is the steam that makes the locomotive go. A price advance on increasing volume
is more bullish than an advance on decreasing volume."
"When in doubt, stay out."
"The stop-loss order is the speculator's best friend. It is the automatic device which
limits loss to a predetermined amount."
"Never average a loss. Never add to a losing position. The first loss is the cheapest loss."
"The longer a congestion area lasts and the more volume that is transacted within it, the
more significant the eventual breakout will be."
"Chart patterns repeat because human nature does not change. Greed and fear are the same
today as they were a hundred years ago."
This specification distills the core implementable content of "Technical Analysis of Stock
Trends" (10th Edition) by Edwards, Magee, and Bassetti. The original work contains extensive
historical examples, philosophical discussion, and portfolio management advice beyond the
scope of this technical implementation guide.