Direct answer
A trendline false break is a situation where price moves beyond a drawn trendline (the “break”), but later moves back to the side of the trendline it came from (the “false” part). In practice, identifying a false break requires clear rules for (1) how you draw the trendline, (2) what counts as a break, and (3) what counts as a return.
Because those rules affect the outcome, this worked example states every assumption and uses only simple numbers—no real-time prices.
Mechanism or definition (with explicit rules)
Trendline: A straight line drawn between two or more selected swing points (for example, connecting two swing lows for an upward/ bullish context or two swing highs for a downward/bearish context). Here we use one line with a single equation.
Break condition (assumption): On a given candle, the high (for a downward move “breaking up” or an upside break) or the low (for breaking down) must cross the trendline level.
False break condition (assumption): Within the next N candles, price must “return” across the trendline in the opposite direction—here defined as a close back to the original side.
Important: These definitions are analysis rules, not universal facts. Different traders or platforms may use other thresholds (for example, wick penetration size, number of confirmations, or using bodies instead of highs/lows).
Evidence or example (worked, numerical, and fully assumed)
Assumptions
- We analyze only a descending trendline in a simplified price series.
- The trendline is defined by two points:
- Point A at (time t=0, price=110)
- Point B at (time t=4, price=100)
- Time is measured in candle steps. We compute the line price level at each candle time.
- Break rule: A false break is tested when a candle’s high is strictly above the trendline level.
- Return rule: In the following two candles (N=2), we require a close back at or below the trendline level.
- We use these assumed candle data (high, close):
| Candle step t | Trendline level (calc) | Candle high (assumed) | Candle close (assumed) |
|---|---|---|---|
| 0 | 110.00 | 109.0 | 109.5 |
| 1 | 107.50 | 108.0 | 107.2 |
| 2 | 105.00 | 106.0 | 104.8 |
| 3 | 102.50 | 103.0 | 102.0 |
| 4 | 100.00 | 101.0 | 99.8 |
| 5 | 97.50 | 99.2 | 97.0 |
| 6 | 95.00 | 98.0 | 95.2 |
| 7 | 92.50 | 96.0 | 93.0 |
Step 1: Trendline equation
Slope from A to B:
- (100 − 110) / (4 − 0) = −10 / 4 = −2.5 price units per candle.
So at any step t, trendline level = 110 − 2.5t.
- At t=5: 110 − 2.5·5 = 110 − 12.5 = 97.5.
Step 2: Check for a “break”
We look for the first candle where high > trendline.
- At t=5, trendline = 97.5 and candle high = 99.2.
- Since 99.2 > 97.5, the break condition is satisfied at t=5.
Step 3: Check for a “return”
We now require a return close at or below the trendline within the next two candles: t=6 and t=7.
- At t=6, trendline = 95.0 and close = 95.2. This is not a return (close is above 95.0).
- At t=7, trendline = 92.5 and close = 93.0. This is also not a return if we require close ≤ level.
Under these exact assumptions, this scenario does not qualify as a trendline false break, because the close did not return to or below the trendline within N=2 candles.
One small change that flips the result (showing sensitivity)
Keep everything the same except set the close at t=7 to 92.0 (still with high 96.0). Then:
- At t=7, trendline = 92.5 and close = 92.0.
- Now close ≤ trendline, so the return rule is met.
- Therefore, with only that change, the same break at t=5 becomes a trendline false break under our rules.
This demonstrates a key point: false-break identification depends on operational definitions like whether you use close versus wick, how many candles count for confirmation, and what threshold is “back inside.”