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1998issue C051-7

Evaluating a trendline barrier that can only tighten a capped stop

A barrier stop exits when price touches or crosses a defined barrier such as a Trendline. The evaluated stop is never farther from entry than a fixed dollar money-management distance, but it can sit tighter when a valid nearby Trendline exists. Historical tests isolated that exit against a Stop-loss order and a Trailing stop on short-hold sample trades.

  • A barrier stop exits when price touches or crosses a defined barrier such as a Trendline, support or resistance, or a retracement level.
  • The evaluated long-side stop is the higher of the Trendline and entry minus a fixed dollar distance, so the stop cannot sit farther than that dollar cap from entry.
  • Trendline barrier stops can be adjusted as a trade develops, similar to Trailing stops, and can lock in paper gains if price moves favorably.
  • On tests that isolated exits, Trendline barrier exits raised net profit and reduced drawdown relative to weaker combinations, and in some cases beat a simple Trailing stop. Holds longer than four or five days were not measured.
Entries in this reading3 entries
Current trackTrailing stop87 readingsTrendline128 readingsStop-loss order144 readings

What a barrier stop is

A barrier stop exits when price touches or crosses a defined barrier such as a Trendline, support or resistance, or a retracement level.

Trendline barrier stops can be adjusted as a trade develops, similar to Trailing stops, and can lock in paper gains if price moves favorably.

How the capped stop is built

The evaluated long-side stop is the higher of the Trendline and entry minus a fixed dollar money-management distance. The short-side stop is the lower of the down-sloping Trendline and that same dollar cap.

Because of that construction, the stop is never farther than the specified dollar amount from entry, but can sit tighter when a nearby valid Trendline exists.

Which trendlines the detector accepts

The detector only accepts a Trendline whose two defining points are more than five bars apart and whose more recent point is at least one bar before the current bar.

How the exits were compared

Editorial evaluation: once a Stop-loss order already caps the loss, the only extra claim a Trendline can make is that a tighter barrier improves the exit. The historical tests hold the entry rule fixed so that claim can be checked against weaker exit combinations and against a Trailing stop.

Tests compared the same random-entry and countertrend-entry systems on end-of-day S&P 500 continuous-contract data so exit differences could be isolated.

All sample trades were capped at four or five days so the series could produce a few hundred non-overlapping trades. Longer holds were not measured.

What those tests showed

Across those tests, Trendline barrier exits raised net profit and reduced drawdown relative to weaker exit combinations, and in some cases beat a simple Trailing stop.

Educational research material, not investment advice. Historical source context does not establish present-day performance.
9 of 36 in the Trailing stop track
19991-4 pp.Next on Trailing stopConstructing common-number support and resistanceSupport is a temporary fair-value price where buying can halt a decline; resistance is the matching area where selling can halt a rally.
All readings on this track · 36 readings
  1. 1988Half-day bars, a midpoint gate, and a bar-based trail
  2. 1989Packaging two-bar reversals into testable entry and exit rules
  3. 1989Weekly high and low averages as stop-and-reverse levels
  4. 1991Constant false-alarm rate for dominant-cycle stops
  5. 1992Tick-index extremes as continuation and turn hypotheses
  6. 1993Constructing layered stops from equity and structure
  7. 1993Filter crossovers with moving-average slope
  8. 1993Precommit stop bounds from equity and structure
  9. 1998Evaluating a trendline barrier that can only tighten a capped stop
  10. 1999Constructing common-number support and resistance
  11. 2001Four-step opening-hour bias and trailing stops
  12. 2004Make the trading system the star
  13. 2005A beginner stock case: stop, trail, and the pre-trade checklist
  14. 2006Sell stops that trail support after the buy
  15. 2006Treat a wave-3 label as unfunded until the stop rails are written
  16. 2008Test medium-term divergence with a trendline break and a trailing stop
  17. 2010Rule-based forex entry, stop and trail
  18. 2012Precommitting stops when one currency range templates another
  19. 2012Cat-ears as a downtrend continuation hypothesis
  20. 2013Three-average swing entry and a trailing average exit
  21. 2014Construct a dual quotient-copy trend filter under a frequency roof
  22. 2014Stop distance, size, and trailing swing invalidation
  23. 2014Long-only RSI pullback, reversal-bar-entry, and staged-trail construction
  24. 2015Dual-average regime, trigger candle, and trail as one daily script
  25. 2015Three-gate trend system: filter, trigger, and trailing stop
  26. 2016Construct HHLLS crossover and breakout entry rules
  27. 2017An appointment-trade around a scheduled political close
  28. 2017Golden-cross breakout rules for a swing entry
  29. 2017Breakout confirmation above round numbers, with nines as sell shelves
  30. 2018Classify diamond geometry before the breakout
  31. 2019When trails and stops betray the support read
  32. 2019One-triggers-the-other pairs for preplanned swing entries
  33. 2019One-triggers-the-other orders for a breakout and its stop
  34. 2019When the second decision unbounds planned risk
  35. 2020Last-Hour Breakout With a Same-Session Flatten
  36. 2020Couple the slow period to stop-loss and trailing-stop settings
By fieldStops and loss limits40 readingsBy year199853 readings
All 87 readings tagged Trailing stop
Also on Trailing stop5 readings
1993Constructing layered stops from equity and structure2012Precommitting stops when one currency range templates another2002Trendline breaks, right shoulders, and trailing stops2008Test medium-term divergence with a trendline break and a trailing stop1986The stop, the size, and the acceptable loss as one pre-entry gate