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2016issue C0442-45

A parabolic trailing stop is not a complete system

A parabolic stop-and-reverse print can mark a repeatable condition on an open-high-low-close bar. Editorial reading treats that print as a classroom signal: the trailing mark can flip a hypothesis, but a pre-set stop-loss and a size rule keep a routine drawdown from being read as a dead method.

  • A 60 percent hit rate, when the rule set is working as intended, is still expected to produce consecutive losing runs of four or more.
  • Position sizing is the control on drawdown and can make the same 60 percent hit-rate rules a large winner or a large loser.
  • Looking back at a chart after the fact creates a false impression that one more noticed condition would have avoided the losing trades.
  • Editorial reading: a parabolic trailing mark can flip a hypothesis, but only a pre-set stop-loss and a size rule keep a routine drawdown from being misread as a dead method.
Entries in this reading3 entries
Stop-loss order15 readingsTrailing stop15 readingsCurrent trackParabolic SAR21 readings

A classroom signal on the bar

A parabolic stop-and-reverse is a chart-based signal that uses open-high-low-close structure and chart scale. It marks a repeatable condition that can be treated as a falsifiable trade hypothesis, from intraday bars through several weeks.

The same page that discusses hit rate, losing streaks, and drawdown control also places a modified parabolic stop-and-reversal method next to a 30-minute-bar trading-system continuation. Editorial reading: that pairing treats the print as a classroom signal on the bar, not as a finished system.

Ordinary losing streaks

A system described as having a 60 percent hit rate, when working as intended, is still expected to produce consecutive losing runs of four or more. Editorial reading: those runs are ordinary enough that a trailing mark flipping the hypothesis is not, by itself, proof that the method is dead.

What the trailing mark cannot do

A trailing stop is a risk filter that moves the exit as price develops so loss distance and exposure stay bounded before entry and while the position is open. Editorial reading: the trailing mark can flip the stop-and-reverse hypothesis when the condition prints the other way.

A stop-loss is a pre-planned exit that bounds a loss with account equity, volatility, stop distance, and exposure instead of leaving the exit to later chart inspection. Looking back at a chart after the fact is described as creating a false impression that losing trades could have been avoided by noticing one more condition.

Position sizing is described as the control on drawdown, equated with risk tolerance, and as the factor that can make the same 60 percent hit-rate rule set a large winner or a large loser. Editorial reading: only the pre-set stop-loss and the size rule keep a routine drawdown from being misread as a dead method.

When a mechanical method stops fitting

Mechanical methods are described as sometimes working under particular market conditions and then ceasing to work when those conditions change. Without a core belief in the methods being used, an inevitable losing streak can lead to abandoning a strategy early or turning a normal drawdown into a much worse result.

Personal proof, not a borrowed setup list

Beginning traders are described as spending about 80 percent of their time learning other people's setups and strategies, while that study is said to supply only about 20 percent of the results on the path to durable practice.

A trader may form or borrow a hypothesis, but is told to test and prove it independently. Successful practice is described as concentrating on a plan, a journal, and logs as a three-part feedback loop. That independent test is personal proof rather than reliance on someone else's setup list.

Educational research material, not investment advice. Historical source context does not establish present-day performance.
17 of 21 in the Parabolic SAR track
201946-54 pp.Next on Parabolic SARAssigning jobs in a stochastic, parabolic, and moving-average stackScan a 12-period stochastic oscillator with one-period smoothing as a sell candidate when the reading is below 78, or when a reading above 78 has fallen below the oscillator's own three-period average.
All readings on this track · 21 readings
  1. 1987Constructing parabolic stops and cycle-window averages
  2. 1989Evaluating always-in parabolic SAR trailing stops
  3. 1993Constructing parabolic time-price trailing stops
  4. 1995Constructing parabolic SAR as an accelerating trail
  5. 1995Constructing a noise-buffered parabolic trailing stop
  6. 1997Constructing a parabolic trailing stop that only tightens
  7. 1998Triangle breakouts filtered by an exponential average and exited with parabolic stops
  8. 2000Treat volume-price imbalance as a hypothesis and let Parabolic SAR hold the exit
  9. 2002Constructing volatility stops from average true range and parabolic SAR
  10. 2002Parabolic SAR construction from stop outputs to reversal signals
  11. 2002Always-in-market SAR trail with directional confirmation
  12. 2004Forex trend confirmation with Average Directional Index, Parabolic SAR, and trendlines
  13. 2006Permission and fill gates for mechanical systems
  14. 2008A Relative Strength Index channel for profit lock and a trailing stop for capital protection
  15. 2010Building loss limits from the parabolic stop-and-reverse plot
  16. 2015Dual-zone currency indexes filter parabolic SAR signals
  17. 2016A parabolic trailing stop is not a complete system
  18. 2019Assigning jobs in a stochastic, parabolic, and moving-average stack
  19. 2019A three-filter stack as a redundancy test
  20. 2020Mechanical Parabolic SAR as an always-in flip after a breakout
  21. 2020Layering Relative Strength Index, MACD, and Parabolic SAR onto relative rotation maps
By fieldEntry and exit rules12 readingsBy year20165 readings
All 21 readings tagged Parabolic SAR
Also on Parabolic SAR5 readings
1993Constructing parabolic time-price trailing stopsStop-loss order1995Constructing a noise-buffered parabolic trailing stopTrailing stop1995Constructing parabolic SAR as an accelerating trailStop-loss order1997Constructing a parabolic trailing stop that only tightensStop-loss order2010Building loss limits from the parabolic stop-and-reverse plotTrailing stop