Foundations of Trend Analysis

Source: John J. Murphy, Technical Analysis of the Financial Markets — Chapters on Trend Analysis

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1. Dow Theory

Dow Theory is the foundational bedrock of technical analysis, established by Charles Dow — editor of The Wall Street Journal — in the late 19th century. Dow himself never published a formal treatise; his principles were later compiled from his editorials by William Hamilton and Robert Rhea. Virtually every trend analysis technique used today traces its roots, directly or indirectly, back to Dow Theory.

The Six Tenets of Dow Theory

1. The Averages Discount Everything

• Core concept: All information that could possibly affect the market is already reflected in price
• Scope: This includes economic, political, psychological, and technical factors — even unforeseeable events such as natural disasters
• Practical implication: Even insider information ultimately manifests in price action. This is why technical analysts focus on how price moves rather than why it moves
• Crypto application: Regulatory changes, project updates, whale wallet movements, and other developments tend to be priced in ahead of time. Observing price reaction to news is more effective than reacting to the news itself

2. There Are Three Trends

Trend Type	Duration	Characteristics	Significance
Primary Trend	1 year or more (up to several years)	Fundamental market direction	Highest
Secondary Trend	3 weeks to 3 months	Corrective move against the primary trend	Medium
Minor Trend	Less than 3 weeks	Short-term noise	Lowest

• Ocean analogy: The primary trend is the tide, the secondary trend is the wave, and the minor trend is the ripple
• Practical application: The guiding principle is to trade only in the direction of the primary trend. Secondary corrections offer entry opportunities aligned with the primary trend, and changing positions based on minor fluctuations should be avoided
• Crypto characteristics: Due to 24/7 trading and elevated volatility, the duration of each trend type may be compressed relative to traditional markets. Bitcoin's four-year halving cycle plays a role analogous to the primary trend

3. Primary Trends Have Three Phases

Bull Market (Uptrend)

1. Accumulation Phase

   • Smart money (institutional investors, whales) quietly accumulates positions at depressed prices
   • The general public remains pessimistic, dismissing the market with sentiments like "this time it won't recover"
   • Volume is moderate, but a pattern of declining volume on pullbacks can be observed
   • Crypto example: During extended bear market bottoms, on-chain data reveals accumulation by large wallets

2. Public Participation Phase

   • Trend-following traders and retail investors begin to join
   • Positive media coverage increases and social media interest surges
   • Both volume and price rise rapidly in tandem
   • This is the most profitable phase for technical analysts

3. Distribution Phase

   • Smart money that accumulated during the first phase sells at elevated prices
   • Retail euphoria reaches its peak, dominated by the belief that "this time it will go up forever"
   • Volume remains high, but upward momentum fades — new highs are made with diminishing conviction

Bear Market (Downtrend)

1. Distribution Phase: Smart money exits while the majority of investors still believe the decline is merely a correction
2. Panic Phase: The public rushes to sell in panic and price drops vertically. Volume explodes
3. Despair Phase: All hope has evaporated, yet even the worst news fails to push prices lower. This phase overlaps with the beginning of the next accumulation phase

4. The Averages Must Confirm Each Other

• Original meaning: A valid trend signal requires both the Dow Jones Industrial Average and the Transportation Average to move in the same direction. The logic is that if factories produce goods (industrials), those goods must be shipped (transportation) — both indices moving together confirms the real economy supports the trend
• Modern application:
  • Confirmation between large-cap and small-cap indices
  • Cross-verification among sector indices
  • Observation of global synchronization across national indices
• Crypto application: Verify whether Bitcoin and Ethereum are moving in the same direction, or whether altcoins rally alongside Bitcoin. If only Bitcoin rises while altcoins stagnate, the sustainability of the uptrend should be questioned

5. Volume Must Confirm the Trend

• Uptrend: Volume increasing on price advances and decreasing on pullbacks is a healthy pattern
• Downtrend: Volume increasing on declines and decreasing on technical bounces is expected
• Warning signal: Volume patterns that diverge from the trend direction serve as early warnings of trend weakening or reversal
• Important note: In Dow Theory, volume is a secondary indicator — it is not used as an independent trading signal. Price action takes priority; volume serves to confirm it

6. Trends Persist Until Definitive Reversal Signals

• Law of inertia: A trend in motion continues until an external force acts upon it
• Reversal confirmation: A trend change is not recognized without clear technical evidence
• Practical lesson: Trading with the existing trend is statistically superior to counter-trend trading ("catching the bottom" or "selling the top"). Many novice traders ignore this principle, attempting to predict reversals and incurring losses as a result

Dow Theory's Signal Framework

Swing Analysis

Failure Swing

• Definition: A pattern where price fails to exceed the previous high or low and reverses
• Top failure swing: A rally fails to surpass the prior high → price then breaks below the prior low → sell signal
• Bottom failure swing: A decline fails to breach the prior low → price then breaks above the prior high → buy signal
• Reliability: This is a stronger reversal signal, carrying a higher probability of trend change

Non-Failure Swing

• Definition: Price makes a new high but then declines below the prior swing low
• Interpretation: The trend still has some momentum, but corrective pressure is building
• Response: Wait for additional confirmation signals and consider reducing position size as a precaution

Limitations of Dow Theory and How to Compensate

• Signal lag: Confirming a trend reversal takes time, meaning the initial portion of the move may be missed. Signals typically occur after 20–25% of the total move has already passed
• Sideways markets: The theory fails to generate reliable signals during trendless, range-bound conditions
• Complementary tools: Combining Dow Theory with moving averages, RSI, and other technical tools improves both signal accuracy and timeliness
• Crypto adaptation: Cryptocurrency markets are more volatile and operate 24/7 compared to traditional equity markets, so trend durations and confirmation criteria should be applied with flexibility

Practical Verification Rules

1. Identify the primary trend: Determine direction using long-term charts (weekly, monthly) first
2. Use secondary corrections: Seek entry points during secondary trend pullbacks in the direction of the primary trend
3. Verify with volume: Always confirm alignment between the trend and volume behavior
4. Cross-market confirmation: Do not rely on a single asset or index — cross-verify with related markets
5. Avoid premature reversal calls: Never declare a trend change without clear technical evidence

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2. Support and Resistance

Support and resistance are key price levels where price repeatedly reacts, forming the most fundamental concept in all of technical analysis. Support is the level where a declining price stops and bounces; resistance is the level where a rising price stalls and pulls back. These levels are created by the collective memory and psychology of market participants. Understanding how they form provides powerful insight into predicting crowd behavior.

Support: Principles and Characteristics

Formation Mechanism

• Buy-side psychology: The collective perception that "price is cheap at this level" concentrates buy orders around that zone
• Regret psychology: Investors who previously sold at that level re-enter the market thinking "I shouldn't have sold"
• Technical buying: Chart analysts who recognize the same support level enter simultaneously, creating a self-fulfilling effect
• Supply-demand dynamics: As price drops, demand naturally increases and supply decreases, forming a level where the decline halts

Factors Determining Support Strength

Factor	Strong Support	Weak Support
Number of tests	3 or more touches with bounces	Only 1–2 tests
Volume	Volume surge on bounces	Low-volume bounces
Age	Long-established significant low	Recently formed low
Price level	Round numbers	Arbitrary price levels
Confluence	Moving average + Fibonacci overlap	Single basis only

Caution: While it is commonly believed that more tests make a support level stronger, excessive testing can actually exhaust the buying power at that level, eventually leading to a breakdown. Monitor whether the magnitude of each bounce is progressively weakening alongside the number of tests.

Psychological Support

• Round numbers: Levels such as $20,000, $50,000, and $100,000 for Bitcoin act as powerful psychological barriers
• Prior highs: When price corrects after an advance, the previously broken high often converts into support
• Moving averages: The 20-day, 50-day, and 200-day moving averages serve as dynamic support. The 200-day MA in particular is widely recognized as the "bull/bear dividing line"

Resistance: Principles and Characteristics

Formation Mechanism

• Sell-side psychology: The collective perception that "price is expensive at this level" concentrates sell orders
• Break-even psychology: Investors who bought at higher prices sell to recover their cost basis once price returns to their entry — a "supply overhang" zone
• Profit-taking: Investors who have moved into profit sell to lock in gains

Confirming a Resistance Breakout

1. Price confirmation

   • The breakout must occur on a closing basis (intraday breakouts have lower reliability)
   • Apply the 3% filter rule for major resistance levels
   • Price should close above resistance for 2–3 consecutive days to validate the breakout

2. Volume confirmation

   • Breakout volume should be at least 150% of average volume
   • Sustained high volume after the breakout is also necessary

3. Time confirmation

   • Price must hold above resistance for a minimum of 2–3 days
   • If a retest (pullback) confirms the broken resistance as new support, breakout reliability increases significantly

The Role Reversal Principle

Role reversal is one of the most critical principles in support/resistance analysis. A broken support level becomes new resistance, and a broken resistance level becomes new support. This phenomenon occurs because of the psychological memory and regret mechanisms of market participants.

Support → Resistance Conversion

Process: Support breaks → Price rallies back (pullback) → Former support acts as resistance → Decline resumes

Practical example:

Step 1: $30,000 support holds with 3 bounces
Step 2: Price breaks down to $28,000 on heavy volume
Step 3: Price pulls back to $30,000 (potential dead-cat bounce)
Step 4: $30,000 acts as resistance, triggering renewed selling
→ Failure to reclaim $30,000 is a strong entry point for short positions

Resistance → Support Conversion

Process: Resistance breaks → Price pulls back → Former resistance acts as support → Advance resumes

Practical tip: The first pullback after a role reversal is one of the safest opportunities to enter in the direction of the trend. Waiting for the pullback rather than chasing immediately after the breakout typically offers a superior risk-to-reward ratio.

The Significance of Round Numbers

Psychological Importance

• Major round numbers: $10,000, $20,000, $50,000, $100,000 for Bitcoin — these are powerful psychological barriers
• Intermediate round numbers: $25,000, $35,000, $75,000 — secondary support/resistance levels
• Options strike prices: As expiration approaches, price levels where large open interest is concentrated exert increasing gravitational pull

Practical Application

• Buy orders tend to cluster just above round numbers, and sell orders just below them
• Setting entry and exit prices with a small buffer from the exact round number is advantageous (e.g., placing a buy order at $50,050 when expecting $50,000 support)

Multi-Timeframe Support and Resistance

Importance by Timeframe

Timeframe	Significance	Application
Monthly	Highest	Long-term investment entry/exit criteria
Weekly	High	Medium-term swing trading criteria
Daily	Medium	Short-term trading and position management
Hourly	Lower	Fine-tuning entry timing

Key principle: Support and resistance from higher timeframes always take precedence over those from lower timeframes. No matter how strong a resistance level appears on the 15-minute chart, if it coincides with a strong daily support level, buyers are more likely to prevail. This is why top-down analysis is essential.

Identifying False Breakouts

False breakouts are one of the most common traps traders fall into. Entering with conviction on a breakout only to see price snap back results in immediate losses.

False Breakout Signals

• Low volume: Volume during the breakout is actually lower than average
• Long wicks: Price reverses immediately after the breakout, forming a long upper or lower wick on the candle
• Insufficient duration: Price returns to the prior range within 2–3 hours of the breakout
• Divergence: Oscillators such as RSI and MACD fail to confirm the breakout direction

Genuine Breakout Signals

• High volume: Volume exceeds 200% of average
• Continuation: Price sustains above/below the breakout level for 3+ days
• Successful retest: The pullback after the breakout confirms the new support/resistance role
• Follow-through: Additional momentum continues after the breakout

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3. Trendlines

A trendline is a straight line that visually represents the direction of price, serving as an essential tool for measuring the angle and strength of a trend. While support and resistance are horizontal price levels, a trendline is a dynamic, angled support or resistance that shifts with time. A single properly drawn trendline can often be more valuable than multiple complex indicators.

Fundamental Principles of Trendlines

Constructing an Uptrend Line

1. Minimum requirement: Connect two consecutive significant lows
2. Confirmation: The trendline is validated when price bounces at a third touch point
3. Selecting connection points:
   • Choose clearly defined swing lows
   • If a gap is present, use the low preceding the gap
   • Whether to use intraday lows (wicks) or closing prices — consistency is what matters most

Constructing a Downtrend Line

1. Minimum requirement: Connect two consecutive significant highs
2. Confirmation: The trendline is validated when price declines at a third touch point
3. Selecting connection points:
   • Choose clearly defined swing highs
   • Temporary spikes (spike wicks) are generally excluded
   • Prioritize highs that occurred on elevated volume

Practical tip: Do not obsess over drawing the "perfect" line. It is rare for every swing low to fall precisely on a single straight line. Minor deviations are acceptable — a good trendline is one where the majority of touch points react consistently.

Evaluating Trendline Validity

Reliability Factors

Factor	High Reliability	Low Reliability
Touch points	4 or more	2 or fewer
Duration	3 months or longer	1 month or less
Angle	30–45 degrees	Too steep or too flat
Volume	Volume increases at touch points	No volume reaction

The Meaning of Trendline Angle

• Below 30°: Too flat, indicating insufficient trend momentum. The movement is closer to sideways action
• 30–45°: The ideal angle. Represents a sustainable, healthy advance or decline
• 45–60°: Somewhat steep, with intermediate corrections likely
• Above 60°: Excessively steep — a correction is inevitable. Such trendlines will soon be violated, requiring readjustment to a shallower angle

The Fan Principle

Concept and Application

The Fan Principle involves drawing three trendlines from a single origin point (the beginning of the trend), each at a progressively different angle, forming a fan shape. It tracks the gradual weakening of a trend as the trendline angle flattens over time.

Fan Principle in an Uptrend:

Step 1: First trendline (steepest) is broken
        → Initial momentum weakening signal
Step 2: Second trendline (moderate angle) forms and is broken
        → Trend deceleration becomes evident
Step 3: Third trendline (shallowest) is broken
        → Trend reversal confirmed

Practical Application

1. First break: A trend deceleration signal — reduce the position by approximately 30%
2. Second break: A trend weakening signal — reduce by an additional 30%
3. Third break: Trend reversal is confirmed — close the remaining position entirely or consider a position in the opposite direction

Key takeaway: "The break of the third trendline is a valid trend reversal signal" — this is the essence of the Fan Principle. It provides three incremental opportunities and enables gradual risk management.

Trend Channels

Channel Components

• Basic trendline: The line connecting lows (ascending channel) or highs (descending channel)
• Channel line (return line): A line drawn parallel to the basic trendline along the opposite price extremes
• Channel width: The vertical distance between the two lines, representing the price oscillation range

Channel Trading Strategy

Within an ascending channel:

• Buy point: Enter at the touch point on the basic trendline (lower boundary)
• Profit-taking point: Take partial profits at the channel line (upper boundary)
• Stop-loss: Close the position if price breaks below the basic trendline

Channel line shortfall (price fails to reach the upper boundary):

• This is an early sign of trend weakening
• Reduce position size in anticipation of a potential break of the basic trendline

Channel breakout:

• Upside breakout: Indicates trend acceleration; target = breakout point + channel width
• Downside breakout: Indicates trend reversal; target = breakout point − channel width

Confirming Trendline Breaks

Conditions for a Valid Break

1. Closing price basis

   • Intraday breaks carry the risk of fakeouts; closing price confirmation is essential
   • A minimum of 2 consecutive closes beyond the trendline is required

2. Volume increase

   • Break should be accompanied by at least 150% of average volume
   • Volume increase is especially critical for upside breaks. Downside breaks can occur under their own weight, making the volume requirement relatively less stringent

3. Filter rules

   • 3% filter: Applied to major long-term trendlines
   • 2% filter: Applied to intermediate trendlines
   • 1% filter: Applied to short-term trendlines
   • For cryptocurrencies, given the higher volatility, filter percentages should be set at 1.5–2× the traditional market standards

4. Time confirmation

   • 2–3 day rule: The break must be sustained for 3 consecutive days
   • Friday break: In traditional markets, confirmation extends through the weekend to Monday. Since crypto trades 24/7, a 72-hour confirmation window can be applied

Identifying False Breakouts

Characteristics of false breakouts:

• Price reverses within 2–3 hours of the break
• The break occurs on low volume
• The candle forms a long upper or lower wick
• Sudden breaks near the close of a trading session should be treated with particular suspicion

Practical lesson: To avoid being trapped by false breakouts, develop the habit of waiting for confirmation rather than entering immediately after a break. Sacrificing a small portion of potential profit for a safer entry produces better results over the long term.

Practical Trendline Strategies

Entry Strategy (Scaled Entry)

• 1st entry: Buy 25% of the planned position at the trendline touch point
• 2nd entry: Add 25% after a bounce is confirmed (bullish candle, volume increase)
• 3rd entry: Add the remaining 50% upon a break of the prior swing high

Stop-Loss Strategy

• Conservative stop: 1% below the trendline (higher frequency of being stopped out)
• Standard stop: 2% below the trendline (balanced approach)
• Aggressive stop: 3% below the trendline (more room but larger potential loss)
• For cryptocurrencies, setting stops based on ATR (Average True Range) is more appropriate given the volatility

Combining Trendlines with Other Indicators

• Trendline + Moving Average: When a trendline touch coincides with a key moving average, the support/resistance strength increases significantly
• Trendline + RSI: If RSI is in oversold/overbought territory at the trendline touch, the probability of a bounce/rejection increases
• Trendline + Fibonacci: A confluence where a trendline and a Fibonacci retracement level overlap provides an exceptionally strong trading basis

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4. Percentage Retracement

Percentage retracement is a technique for measuring the extent of corrections that follow major price moves. Markets do not move in straight lines — an advance is followed by a partial pullback, and a decline is followed by a partial bounce. Predicting how far a correction will extend is critical for determining whether the trend will continue and for identifying optimal entry points.

Theoretical Background of Basic Retracement Levels

The foundational retracement framework consists of three levels: 1/3, 1/2, and 2/3. These ratios have been empirically validated and are based on the observation that market participants' psychological responses concentrate at specific levels.

1/3 Retracement (33.3%)

• Meaning: The minimum retracement level — a shallow correction seen in strong trends
• Market psychology: Represents short-term profit-taking by some participants; the selling pressure is insufficient to alter the trend
• Practical implication: High probability of trend continuation
• Strategy: Aggressively consider buying in the direction of the trend

1/2 Retracement (50.0%)

• Meaning: The most common and frequently occurring retracement level
• Market psychology: Buying and selling forces are in equilibrium
• Practical implication: A neutral signal — additional confirmation is needed
• Strategy: Approach cautiously; enter when bounce signals appear at this level

2/3 Retracement (66.7%)

• Meaning: The maximum tolerable retracement level. A deeper pullback calls the trend itself into question
• Market psychology: The trend has weakened considerably, and the probability of reversal is rising
• Practical implication: The likelihood of trend continuation decreases
• Strategy: Actively consider closing existing positions

Fibonacci Retracement Levels

Fibonacci retracements apply ratios derived from the Fibonacci sequence (1, 1, 2, 3, 5, 8, 13, 21…) to price analysis. These ratios, found throughout nature, have been observed by technical analysts over decades to play a meaningful role in financial market corrections. They overlap substantially with the traditional 1/3, 1/2, and 2/3 framework while providing a more granular analytical structure.

Key Fibonacci Ratios

Ratio	Meaning	Frequency of Use	Reliability
23.6%	Very shallow retracement	Low	Medium
38.2%	Shallow retracement (≈1/3)	High	High
50.0%	Moderate retracement (1/2)	Very high	Highest
61.8%	Deep retracement (golden ratio)	High	High
78.6%	Very deep retracement	Medium	Medium

Note: 50% is not technically a Fibonacci ratio, but it is so important in practice that it is always included in Fibonacci tools. The 38.2% and 61.8% levels are derived from the ratios of adjacent terms in the Fibonacci sequence.

Fibonacci Extension Targets

Used to project price targets in a trending market:

• 161.8% extension = A + (B − A) × 1.618
• 261.8% extension = A + (B − A) × 2.618
• 423.6% extension = A + (B − A) × 4.236

Where A is the trend starting point and B is the prior swing high. In crypto bull markets, price reaching the 261.8% and 423.6% extensions is more common than in traditional markets.

Speed Resistance Lines

Speed resistance lines are a technique for visually representing the velocity of a trend — essentially an extension of retracement analysis into the time dimension.

Construction Method

1. Establish reference points: Identify the major low and high
2. 1/3 line: Draw a line from the high to the 1/3 point of the total price move
3. 2/3 line: Draw a line from the high to the 2/3 point of the total price move

Practical Application

Example: Bitcoin rises from $20,000 → $50,000, then corrects
- Total advance: $30,000
- 1st support (1/3 retracement): $40,000
- 2nd support (2/3 retracement): $30,000
- Critical level (100% retracement): $20,000 → Complete trend invalidation

Retracement Trading Strategies

Bullish Retracement Pattern (Within 38.2%)

Characteristics:

• The retracement completes quickly
• Price resumes the trend direction on high volume
• The time required to reclaim the prior high is short

Trading strategy:

1. 1st entry: Buy 30% of the planned position at the 23.6% retracement
2. 2nd entry: Add 40% at the 38.2% retracement
3. 3rd entry: Add the remaining 30% after confirmation that the retracement has ended (bullish candle reversal, volume increase)

Normal Retracement Pattern (50% Level)

Characteristics:

• The most frequently occurring pattern
• Price may form a consolidation range, searching for direction
• Directional judgment is difficult at this zone

Trading strategy:

1. Wait: Avoid premature entries at the 50% retracement zone
2. Scale in: Enter gradually in small increments to manage the average cost basis
3. Confirmation entry: Enter with conviction only after technical signals of a bounce appear (hammer candle, volume spike, etc.)

Bearish Retracement Pattern (61.8% or Deeper)

Characteristics:

• The probability of trend reversal increases substantially
• Often progresses slowly alongside declining volume
• Price may fall to psychological support levels

Trading strategy:

1. Prepare to stop out: Actively consider closing existing positions
2. Watch for reversal: Look for reversal patterns (head and shoulders, double bottom, etc.)
3. Counter-trend entry: If reversal is confirmed, establish a new position in the opposite direction

Multi-Timeframe Retracement Analysis

When Fibonacci retracements are drawn across different timeframes and multiple ratios converge at the same price zone, this is called a "Fibonacci cluster." These confluence points act as far stronger support/resistance than any single Fibonacci level.

Long-term (Monthly/Weekly):

• The 50% retracement acts as powerful support/resistance
• A break of the 61.8% level significantly increases the probability of trend reversal

Medium-term (Daily):

• The first reaction typically occurs at 38.2%
• Critical directional decisions are made near the 50% level

Short-term (Hourly):

• Scalping opportunities arise at 23.6% and 38.2%
• Quick bounce/rejection patterns are exploited for short-term profits

Retracement Failure Patterns

Shallow Retracement Failure

• Phenomenon: Price fails to retrace even to 23.6% and immediately resumes the trend
• Meaning: Indicates an extremely strong trend — can be viewed as a chase-entry signal
• Risk: The market is in a short-term overheated state, and a sharp correction may follow. Avoid reckless entries driven by FOMO

Extended Deep Retracement

• Phenomenon: The retracement exceeds 78.6% and extends toward a full 100% retracement
• Meaning: A complete reversal of the prior trend — a new trend has likely begun
• Response: Abandon the prior strategy and start fresh with a new structural analysis of the market

Volume and Retracement Correlation

Healthy Retracement

• During the retracement: Volume decreases → selling pressure is light
• On trend resumption: Volume surges → new buying power is entering
• Conclusion: A healthy correction where fresh capital enters after profit-taking

Unhealthy Retracement

• During the retracement: Volume increases → genuine selling is underway
• On attempted trend resumption: Volume decreases → buying power is exhausted
• Conclusion: A precursor to trend weakening or reversal — consider closing existing positions

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5. Price Gaps

A price gap is a void in the price chart between consecutive trading sessions. On a candlestick chart, an up gap occurs when the low of the current candle is above the high of the previous candle; a down gap occurs when the high of the current candle is below the low of the previous candle. Gaps reflect strong market sentiment and significant supply-demand imbalances, making them important technical signals.

Crypto characteristics: Since the cryptocurrency spot market trades 24/7, traditional gaps rarely occur. However, CME Bitcoin futures trade only on weekdays, producing frequent weekend gaps that are highly useful in practice. Even in spot markets, de facto gaps can form during periods of extremely low liquidity.

How Gaps Form

Gap Formation Mechanisms

1. Information asymmetry: Major news released after market close (or during low-liquidity hours)
2. Emotional reaction: Excessive optimism or pessimism from investors expressed simultaneously through orders
3. Liquidity shortage: Significant order imbalance at market open
4. Institutional activity: Large-scale orders that shock the market

Gap Size and Significance

Gap Size	Meaning	Persistence	Probability of Being Filled
Below 0.5%	Technical gap (noise)	Low	Over 90%
0.5–2%	Meaningful gap	Medium	70–80%
2–5%	Significant gap	High	50–60%
Above 5%	Highly significant gap	Very high	Below 30%

The Four Types of Gaps

1. Common Gap

Characteristics:

• Occurs on low volume
• Typically appears during consolidation phases or narrow trading ranges
• Filled quickly, usually within a few days
• Often caused by insufficient liquidity rather than any specific news or event

Practical response:

• Ignore: Not used as a meaningful trading signal
• Gap-fill trade: Fading the gap direction to capture profit as it gets filled
• Caution: Distinguishing a common gap from other types is difficult initially — always verify volume and technical context

2. Breakaway Gap

Characteristics:

• Occurs on high volume
• Appears after a break of significant support/resistance or upon completion of a chart pattern (triangle, range, etc.)
• A powerful signal marking the beginning of a new trend
• Often remains unfilled, and the gap itself subsequently serves as support/resistance

Practical application:

Buy signal criteria:
1. Upside gap breaking through resistance
2. Accompanied by volume ≥ 200% of average
3. Gap size of 2% or more
4. Immediately following completion of a significant pattern (triangle breakout, range breakout, etc.)

Entry strategy:
- Enter in the trend direction near the upper edge of the gap
- Stop-loss: 1% below the lower edge of the gap
- Target: Pattern-based price target or the next major resistance level

3. Runaway Gap (Measuring Gap)

Characteristics:

• Occurs in the middle of an already established strong trend
• Signals trend acceleration, reflecting the urgency of participants who have not yet joined
• Tends to appear near the midpoint of the total advance (or decline), hence the name "measuring gap"
• This property enables estimation of the price target

Measuring formula:

In an uptrend:
Target = Gap price + (distance from trend start to gap)

Example:
- Trend start: $30,000
- Gap occurs at: $45,000 ($15,000 advance)
- Estimated target: $45,000 + $15,000 = $60,000

Practical application:

• Add to position: A strong signal of trend continuation — increase exposure
• Set targets: Use the measuring formula to calculate the target price and plan profit-taking
• Adjust stops: Raise the stop-loss to the bottom of the gap

4. Exhaustion Gap

Characteristics:

• Occurs at the end of a trend — a "last gasp" in nature
• Begins with high volume, but follow-through volume drops sharply
• Gets filled quickly (within days), foreshadowing a trend reversal
• Difficult to distinguish from a breakaway gap in real time — identification relies on subsequent price action

Identification techniques:

1. Location: Appears near the peak/trough after an extended trend lasting several months
2. Volume pattern: Volume spikes on the gap day but declines rapidly afterward
3. Price action: Further trend progression fails within 2–3 days of the gap
4. Follow-through: Once the gap begins to fill, reversal is confirmed

Key distinction: Breakaway gaps and exhaustion gaps cannot be distinguished immediately. The critical difference lies in subsequent price action. If the trend accelerates after the gap, it is a breakaway or runaway gap. If price stalls or the gap begins to fill, it is an exhaustion gap.

Special Gap Patterns

Island Reversal

Extremely rare, but one of the most powerful reversal signals when it does appear.

Components:

1. Exhaustion gap: A gap in the trend direction occurring at the end of the trend
2. Island zone: An isolated price cluster bounded by gaps on both sides