The document outlines the 'applystop' function in AmiBroker for quant trading, detailing various types of stop signals and their configurations. It emphasizes the significance of compatibility between stop types and modes, as well as the necessity for simplicity in trading strategies. Key recommendations include specific stop configurations to optimize profit while managing risks effectively.

1. ApplyStop Intro 1/2
AMIBROKER QUANT COURSE
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2. When to sell?
1. Sell Signals
• Sell = sellConMKC AND (sellCon1 AND sellCon2 …);
2. Stop Triggers
• ApplyStop( stopTypeLoss, stopModePercent, 15);
3. Better opportunities
• Calculate current positions
• Calculate opportunities, and then compare to current positions
• Force sell signals, and then enter a better opportunity
Note: use CBI to perform 3.
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3. Facts about Stop Triggers
•Stops can help or hurt your results
•Change of degree in stop could result favorably or unfavorably
•Limitation in AmiBroker
•Backtesting VS Execution
•Keep it manageable and executable; otherwise, don’t use it
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4. Basic ApplyStop in AmiBroker
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ApplyStop( Type, Mode, Amount);
• stopTypeLoss
• stopTypeProfit
• stopTypeNBar
• stopTypeTrailing
• stopModePoint
• stopModePercent
• stopModeBars
• stopModeRisk
• Number: 15
• Point
• Percent
• Bars
• Array: 3ATR(14)

5. 77
40 days
100
100
120
Profit from High = 120 – 100 = 20, then 10% profit = 2
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100
120
High at 120, 10% = 12
High at 110, 10% = 11
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99
-10%
100
90
10%
100
110
ApplyStop(stopTypeLoss,
stopModePercent, 10);
ApplyStop(stopTypeProfit,
stopModePercent, 10);
ApplyStop(stopTypeNBar,
stopModeBars, 40);
ApplyStop(stopTypeTrailing,
stopModePercent, 10);
ApplyStop(stopTypeTrailing,
stopModeRisk, 10);

6. EASY ?
Not so fast !
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7. More Details of ApplyStop in AmiBroker
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• Trade Price: SellPrice = Open or Close
• ExitAtStop: 0, 1, or 2
• Volatility: True or False
• ReEntryDelay: especially in Sideways and many false signals
• ValidFrom & ValidTo: especially in stopModeRisk
• ActivateStopsImmediately: On or Off
Note: please study https://www.amibroker.com/guide/afl/applystop.html
ApplyStop(Type, Mode, Amount, ExitAtStop, Volatility, ReEntryDelay, ValidFrom, ValidTo);

8. WARNING
Can Code, but Not Execute = Useless
Can Execute, but Not Understand = Risky
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9. ApplyStop Intro 2/2
AMIBROKER QUANT COURSE
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10. Facts about ApplyStop in AmiBroker
•Compatibility between stopType and stopMode matters
• stopTypeNBar not compatible with stopModePercent
•Compatibility between stopMode and stopAmount matters
• stopModePercent not compatible with stopAmount 3ATR()
•Only one stopMode per one stopType is used
1. ApplyStop(stopTypeTrailing, stopModePercent, 15); //over ruled by next line
2. ApplyStop(stopTypeTrailing, stopModeRisk, 15);
•Keep it manageable and executable; otherwise, don’t use it
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11. stopType… and stopMode… in AmiBroker
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stopType…
stopMode…
Measured FromPoint Percent NBars Risk
Loss Entry price
Profit Entry price
NBar Entry bar
Trailing (1) (1) (2)
(1) % from High
(2) % from High - Entry
ApplyStop( Type, Mode, Amount, ExitAtStop, Volatility, ReentryDelay, ValidFrom, ValidTo);

12. stopMode… and stopAmount given: ATR(14) = 5
•ApplyStop(stopTypeLoss, stopModePoint, 10); //Entry: 125 -> then: 115
•ApplyStop(stopTypeLoss, stopModePercent, 10); //125->112.5
•ApplyStop(stopTypeLoss, stopModePercent, 2*ATR(14)); //Run, but non-sense
•ApplyStop(stopTypeLoss, stopModePoint, 2*ATR(14)); //125->115
•ApplyStop(stopTypeProfit, stopModePoint, 10); //Entry: 125 -> then: 135
•ApplyStop(stopTypeProfit, stopModePercent, 10); //125->137.5
•ApplyStop(stopTypeProfit, stopModePercent, 2*ATR(14));
•ApplyStop(stopTypeProfit, stopModePoint, 2*ATR(14)); //125->135
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13. stopMode… and stopAmount given: ATR(14) = 5
•ApplyStop( stopTypeNBar, stopModeBars, 40); // Bar 0 until Bar 40
•ApplyStop( stopTypeNBar, stopModePercent, 40); //Run, but non-sense
•ApplyStop( stopTypeNBar, stopModePoint, 40); //Run, but non-sense
•ApplyStop( stopTypeTrailing, stopModePoint, 25); //100->125->100
•ApplyStop( stopTypeTrailing, stopModePoint, 5*ATR(14)); //100->125->100
•ApplyStop( stopTypeTrailing, stopModePercent, 25); //100->125->93.75
•ApplyStop( stopTypeTrailing, stopModeRisk, 25); //100->125->118.75
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14. stopTypeTrailing with stopModeRisk
•ApplyStop( stopTypeTrailing, stopModeRisk, 25); //100->104->103 ???
•ApplyStop( stopTypeTrailing, stopModeRisk, 25, … , … , …, 20); // ValidFrom
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ApplyStop( Type, Mode, Amount, ExitAtStop, Volatility, ReentryDelay, ValidFrom, ValidTo);

15. Conclusion for Basic ApplyStop in AmiBroker
•Not executable or not understand it, Don’t use it !
•Keep it simple and straightforward
•Prefer the followings:
• ApplyStop(stopTypeLoss, stopModePercent, 10); // 5 to 15%;
• ApplyStop(stopTypeProfit, stopModePercent, 20); // 15 to 35%;
• ApplyStop(stopTypeTrailing, stopModePercent, 25); // 20 to 30%;
• ApplyStop(stopTypeNBar, stopModeBars, 40); // Depends on strategy
•Keep stop co-ordinate and logical
•Read: https://www.amibroker.com/guide/afl/applystop.html
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16. WARNING (AGAIN)
Can Code, but Not Execute = Useless
Can Execute, but Not Understand = Risky
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Note: please study https://www.amibroker.com/guide/afl/applystop.html