# Lead-lag Instrument Triggers

Executes on the chart only after a related leader instrument moves first: breakouts, failures at key levels and 2-sigma momentum thrusts on the leader (BTCUSDT by default) arm a 10-bar trigger window, and the chart confirms by breaking its own 20-bar extreme. A 0.3 minimum-correlation gate re-validates the pair, with catch-up setups, non-confirmation signals and eight alerts.

- Indicator in the LuxAlgo Library, by LuxAlgo, published May 28, 2026.
- Access: free.
- Concepts: [Lead-lag Instrument Triggers](https://www.luxalgo.com/library/concept/lead-lag-instrument-triggers/) (primary)
- Open on Vela: https://vela.luxalgo.com/chart?pineScriptCodeId=y83nc735gdtfk97b8hly27t9
- Page: https://www.luxalgo.com/library/indicator/lead-lag-instrument-triggers/

**Lead-lag Instrument Triggers** turns a leader-lagger relationship into an executable confirmation rule. Decisive events on the leader - a close through its prior 20-bar extreme, a failed poke beyond it, or an outsized one-bar return - arm a trigger window in that direction, the workflow of [lead-lag instrument triggers](https://www.luxalgo.com/library/concept/lead-lag-instrument-triggers/), and the chart symbol signals only when it breaks its own equivalent level inside that window. The chart's breakout levels stay plotted, brightening on the armed side.

## How to Trade the Lead-lag Instrument Triggers?

- **Trigger**: the chart breaks its level inside the armed window - taken because the leader already broke; one trigger consumes the window.
- **Catch-up setup**: a few bars in, the leader's move has held but the chart has barely followed - a setup for the lagged catch-up leg, not a trigger.
- **Non-confirmation**: the window expires without the chart following - early evidence the leader's move may be exhausting.
- **Correlation gate**: leader events below the minimum rolling correlation arm nothing - co-movement is re-validated continuously.

## Lead-lag Instrument Triggers Settings

- **Leader Symbol** (default BINANCE:BTCUSDT): the instrument presumed to move first.
- **Breakout Length** (default 20): lookback of the key levels on leader and chart.
- **Breakouts**, **Failures At Key Levels** and **Momentum Thrusts** (all on): the leader event types, with **Thrust Window** (default 100) and **Thrust Threshold (Sigma)** (default 2.0).
- **Trigger Window (Bars)** (default 10): bars the chart has to confirm.
- **Correlation Gate** (on) with **Correlation Length** (default 100) and **Minimum Correlation** (default 0.3).
- **Catch-up Setups** (on) with **Catch-up Check Delay** (default 3) and **Catch-up Max Relative Move** (default 0.25); **Non-confirmation Signals** (on).
- **Show Dashboard** (on, Top Right, Small) plus **Chart Breakout Levels**, **Highlight Armed Window** and **Leader Event Markers** (all on).

## Frequently Asked Questions

### What does Lead-lag Detection add to this build?

[Lead-lag Detection](https://www.luxalgo.com/library/indicator/lead-lag-detection/) quantifies the relationship - peak lag, strength, significance - before a leader is trusted. This build assumes the pairing and executes on it, so run the detector first.

### Why did a leader event arm nothing?

Three usual reasons: the correlation gate read below the minimum, simultaneous opposite events cancelled as ambiguous, or the leader bar was a stale repeat from a session mismatch - only fresh leader bars count.

### Is a failure at highs bullish or bearish?

Bearish. A failed poke above the prior extreme arms the opposite direction - failures at highs arm bearish windows, failures at lows bullish ones.

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Source: https://www.luxalgo.com/library/indicator/lead-lag-instrument-triggers/ (LuxAlgo Library). Free to use with attribution: https://www.luxalgo.com/library/license/
