L1 Bottomline Reversal Indicator

Sep 23, 2020

Static chart image
Support and Resistance
Signals
Moving Averages
Volatility

The L1 Bottomline Reversal Indicator tool identifies potential trend reversals by utilizing three progressive support levels to detect extreme oversold conditions. It aims to filter market noise and provide traders with high-probability entry points when the price breaks through established bottom-line support levels during a trend.

Usage

The indicator is primarily used to identify long entry opportunities in mid-to-long-term timeframes. Traders can interpret the following components:

  • Bull Life Line: Acts as a trend filter; when the price is above this line, the market is considered to be in a bullish state.
  • Support Levels: The indicator plots three distinct support levels (Costline, Lowbuy, and Bottomline). A bounce off the Costline often indicates a minor retracement, while reaching the Bottomline suggests an extreme oversold condition.
  • Buy Signals: A label is generated when the price touches or exceeds the Bottomline and shows a reversal characteristic (close higher than the previous close by a specific threshold).

This tool is most effective on daily or weekly charts where trend structures are more stable. It is recommended to use this indicator in conjunction with a defined exit strategy, as it focuses specifically on entry detection.

Details

The script construction relies on several moving average layers and volatility measurements:

  • Trend Detection: Uses a triple-smoothed EMA of the close price (SMA13) to establish the primary price trend.
  • Volatility Filtering: Incorporates an ATR-based calculation to define the Lifeline, helping to distinguish between normal market fluctuations and trend shifts.
  • Layered Support: The three support levels are derived from an EMA of the typical price (HLC3). The secondary and tertiary levels (Lowbuy and Bottomline) are percentage-based offsets from the primary Costline, creating a multi-stage exhaustion zone.

Settings

  • m: Defines the lookback period for the primary Costline (EMA of HLC3). Increasing this value smooths the support levels for longer-term analysis.
  • n1: Sets the lookback period used by the signal condition function to validate if a reversal signal has occurred within a specific window.

FAQ

How do I use the L1 Bottomline Reversal Indicator?

You can use the indicator to spot "Bottomline" touches which represent extreme oversold areas. When a "Buy" label appears, it suggests that the price has hit a significant support level and is starting to show upward momentum.

On which timeframes is this script most effective?

The indicator is designed for mid-to-long-term trading. It is most stable and reliable on the Daily (D) and Weekly (W) timeframes.

How can I access this indicator?

You can get access on the LuxAlgo Library for charting platforms like TradingView, MetaTrader (MT4/MT5), and NinjaTrader for free.

Free access on the following platforms
tradingviewSymbolTradingView
Open in your browser

This in-app browser is not compatible with Get Access from the library.

Tap the menu (...) at the top of your screen and select "Open in Browser", "Open in Safari", or "Open in Chrome" to continue.

ninjatraderNinjaTrader
Open in your browser

This in-app browser is not compatible with Get Access from the library.

Tap the menu (...) at the top of your screen and select "Open in Browser", "Open in Safari", or "Open in Chrome" to continue.

metatrader4MetaTrader 4/5
Open in your browser

This in-app browser is not compatible with Get Access from the library.

Tap the menu (...) at the top of your screen and select "Open in Browser", "Open in Safari", or "Open in Chrome" to continue.

thinkorswimThinkorswim
Open in your browser

This in-app browser is not compatible with Get Access from the library.

Tap the menu (...) at the top of your screen and select "Open in Browser", "Open in Safari", or "Open in Chrome" to continue.

Trading & investing are risky and many will lose money in connection with trading and investing activities. All content on this site is not intended to, and should not be, construed as financial advice. Decisions to buy, sell, hold or trade in securities, commodities and other investments involve risk and are best made based on the advice of qualified financial professionals. Past performance does not guarantee future results.

Hypothetical or Simulated performance results have certain limitations. Unlike an actual performance record, simulated results do not represent actual trading. Also, since the trades have not been executed, the results may have under-or-over compensated for the impact, if any, of certain market factors, including, but not limited to, lack of liquidity. Simulated trading programs in general are designed with the benefit of hindsight, and are based on historical information. No representation is being made that any account will or is likely to achieve profit or losses similar to those shown.

Testimonials appearing on this website may not be representative of other clients or customers and is not a guarantee of future performance or success.

As a provider of technical analysis tools and strategies, we do not have access to the personal trading accounts or brokerage statements of our customers. As a result, we have no reason to believe our customers perform better or worse than traders as a whole based on any content, tool, or platform feature we provide.

Charts used on this site are by TradingView in which the majority of our technical indicators are built on. TradingView® is a registered trademark of TradingView, Inc. www.TradingView.com TradingView® has no affiliation with the owner, developer, or provider of the Services described herein.

Market data is provided by CBOE, CME Group, BarChart, Massive, CoinAPI. Select U.S. equities data is provided through Massive. CBOE BZX real-time U.S. equities data is licensed from CBOE and provided through BarChart. Real-time futures data is licensed from CME Group and provided through BarChart. Select cryptocurrency data, including major coins, is provided through CoinAPI. All data is provided “as is” and should be verified independently for trading purposes.

This does not represent our full Disclaimer. Please read our full disclaimer.

© 2026 LuxAlgo Global, LLC.