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Spira Alligator
This is an trend-following pullback system inspired by Bill Williams’ Alligator, but built to operate as a purely mechanical signal system. It’s designed for traders who want to:
Follow the main trend
Buy or sell on pullbacks back into the trend
Use simple, visual logic without having to interpret too many “subtle” patterns
How it works
The Alligator lines (Lips, Teeth, Jaw) visualize trend direction and strength.
A separate trend line (default EMA 144) is used as a long-term trend filter.
The system detects a pullback back to the Teeth (Lips crosses once against the trend and then crosses back), but only when price is on the correct side of the trend line.
When the conditions are met, it prints:
A BUY signal when price is above the trend line
A SELL signal when price is below the trend line
How to use it
Add Spira Alligator to TradingView and enable the line + signal display.
Use BUY signals as candidate entries in an uptrend (price above the trend line).
Use SELL signals as candidate entries in a downtrend (price below the trend line).
Use the background color to quickly spot when an active signal event occurs.
This logic is meant as a starting point—add your own risk management (stop-loss, take-profit, confluence with other indicators) as needed.
Important notes
This is not the classic Alligator approach, but a systematic variation that produces clear, mechanical signals.
It’s made for testing and experimentation, and is especially suitable for trend-following traders who prefer simple but robust logic.
Follow the main trend
Buy or sell on pullbacks back into the trend
Use simple, visual logic without having to interpret too many “subtle” patterns
How it works
The Alligator lines (Lips, Teeth, Jaw) visualize trend direction and strength.
A separate trend line (default EMA 144) is used as a long-term trend filter.
The system detects a pullback back to the Teeth (Lips crosses once against the trend and then crosses back), but only when price is on the correct side of the trend line.
When the conditions are met, it prints:
A BUY signal when price is above the trend line
A SELL signal when price is below the trend line
How to use it
Add Spira Alligator to TradingView and enable the line + signal display.
Use BUY signals as candidate entries in an uptrend (price above the trend line).
Use SELL signals as candidate entries in a downtrend (price below the trend line).
Use the background color to quickly spot when an active signal event occurs.
This logic is meant as a starting point—add your own risk management (stop-loss, take-profit, confluence with other indicators) as needed.
Important notes
This is not the classic Alligator approach, but a systematic variation that produces clear, mechanical signals.
It’s made for testing and experimentation, and is especially suitable for trend-following traders who prefer simple but robust logic.
开源脚本
秉承TradingView的精神，该脚本的作者将其开源，以便交易者可以查看和验证其功能。向作者致敬！您可以免费使用该脚本，但请记住，重新发布代码须遵守我们的网站规则。
Spira Scalper
免责声明
这些信息和出版物并非旨在提供，也不构成TradingView提供或认可的任何形式的财务、投资、交易或其他类型的建议或推荐。请阅读使用条款了解更多信息。
开源脚本
秉承TradingView的精神，该脚本的作者将其开源，以便交易者可以查看和验证其功能。向作者致敬！您可以免费使用该脚本，但请记住，重新发布代码须遵守我们的网站规则。
Spira Scalper
免责声明
这些信息和出版物并非旨在提供，也不构成TradingView提供或认可的任何形式的财务、投资、交易或其他类型的建议或推荐。请阅读使用条款了解更多信息。