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2020issue C0815

Last-Hour Breakout With a Same-Session Flatten

The archive schedules a last-hour-scan at 3 pm Eastern for a sharp upward move on volume higher than midday, preferably a breakout from a cup or ascending triangle. A rule-based-entry is valid only after a resistance-offset of at least $0.50, with a session-low-stop, an optional trailing-stop, and a required flat-before-close.

  • The last-hour-scan is a visual check near 3 pm Eastern for a sharp upward move on volume above the midday pace, preferably a breakout from a cup or ascending triangle.
  • A rule-based-entry is valid only after price has cleared resistance by at least $0.50, and volume that is markedly higher than midday is treated as the primary confirmation.
  • An initial hard stop sits at the session low, overnight holding is disallowed, and the entire position must be flat before 4 pm.
  • A trailing-stop may be paired with that hard stop so a last-hour reversal does not surrender a locked-in gain, and extra size is allowed only while the last-hour uptrend remains intact.
Entries in this reading3 entries
Current trackTrailing stop87 readingsBreakout confirmation172 readingsRule-based entry174 readings

A same-session laboratory

The archive describes a last-hour workflow that can be checked on the same session it is used. A breakout here is a late-session advance that clears a recognized pattern such as a cup or ascending triangle, turning that chart condition into a same-day, falsifiable trade hypothesis.

Editorial interpretation: the final hour is a same-session laboratory only when volume confirms, clearance is measured, risk is pre-bounded, and the book is forced flat before the close. That laboratory reading is editorial. The archive records the procedure, not the laboratory metaphor.

The last-hour-scan

The last-hour-scan is a visual check near 3 pm Eastern for a sharp upward move on volume above the midday pace. The preferred structures are a cup or an ascending triangle.

A rule-based-entry is the single procedure that then fixes scan time, resistance clearance, stop location, scale-in permission, and a mandatory flatten before the close.

Clearance that makes an entry valid

A rule-based-entry is valid only after price has cleared resistance by at least $0.50. That cushion is the resistance-offset. Without it, the late-session advance is not treated as an entry.

Stops, size, and the flatten

An initial hard stop is placed at the session low. That session-low-stop is the hard protective bound for the current trading day.

A trailing-stop may be paired with the hard stop so a last-hour advance that reverses before the close does not surrender a locked-in gain. The trailing-stop ratchets with a last-hour extension, while the hard bound still sits at the session low.

The entire position is scheduled for exit before 4 pm. Flat-before-close is the requirement to exit the entire position before 4 pm and refuse overnight exposure. Overnight holding is disallowed because a next-day mean-reversion gap is treated as a standing risk after a late rally.

Additional size may be added only while the last-hour uptrend remains intact, and still requires a full flatten before 4 pm.

Why last-hour buying can accelerate

Limited remaining session time and possible short covering are offered as conceptual reasons last-hour buying can accelerate.

Editorial note: those reasons explain why a late advance can speed up. They are not a claim that the move must continue.

Educational research material, not investment advice. Historical source context does not establish present-day performance.
35 of 36 in the Trailing stop track
202026-31 pp.Next on Trailing stopCouple the slow period to stop-loss and trailing-stop settingsA moving-average crossover is often started when a short-period average or the close crosses a longer-period average, while the slow period is commonly left fixed at a default such as 200 days.
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 fieldEntry and exit rules206 readingsBy year202085 readings
All 87 readings tagged Trailing stop
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