Hurst Intraday Cycles & FLD

Hurst Intraday Cycles & FLD: A Day Trader’s Guide

Overview

This indicator adapts the legendary market cycle theories of J.M. Hurst specifically for intraday day trading. While Hurst’s "Nominal Model" is traditionally applied to daily and weekly charts (the 20-day, 40-day, and 18-month cycles), this script applies the principle of Harmonicity to decompose those rhythms into the "Sub-Nominal" cycles that drive the trading day: the 80-minute and 40-minute rhythms.

What is the FLD (Future Line of Demarcation)?

The FLD is the core "signal generator" in Hurst’s toolset. It is the median price shifted forward in time by exactly half the length of the cycle you are tracking.

The Logic: If a cycle is bottoming, the price will cross above the FLD. If a cycle is peaking, the price will cross below it.

The Advantage: Unlike traditional moving averages that "lag" price, the FLD acts as a projected boundary. When price interacts with an FLD that is shifted into the "future," it provides a more reliable confirmation of a structural trend change.

Key Features

Multi-Cycle Tracking: Automatically tracks the Primary (80m) and Secondary (40m) intraday cycles.

Adaptive Timeframes: The script automatically calculates the bar-count for your cycles whether you are on a 1-minute, 5-minute, or 15-minute chart.

Future Projections: Draws vertical dashed lines into the future to mark the expected "Time Windows" for the next cycle troughs (lows).

Trend Dashboard: A real-time status box indicating the current bias (Bullish/Bearish) and confirming your chart’s timeframe settings.

How to Trade with this Indicator

1. The FLD Cross (Entry Signal)

The most common way to use this script is to look for a Price/FLD Interaction.

Bullish Entry: Wait for the price candle to close above the blue (Primary) FLD line. This suggests the 80-minute cycle has bottomed.

Bearish Entry: Wait for the price candle to close below the blue FLD line. This suggests the 80-minute cycle has peaked.

2. Harmonic Nesting (High Probability)

A "Nested Low" occurs when multiple cycles bottom at the same time.

The Setup: Look for moments where the Price crosses both the Orange (40m) and Blue (80m) FLD lines simultaneously. This indicates a powerful surge in momentum.

3. Time Projections (Exits & Prep)

Use the vertical dashed lines to anticipate volatility.

If you are in a Long position and price is approaching a vertical "Projection Line," be prepared for a potential cycle trough (a dip or reversal).

These lines represent the "Rhythm" of the market; they are not exact price targets, but "Time Targets."

Recommended Settings

For standard equity markets (6.5-hour sessions), we recommend:

Primary: 80 Minutes

Secondary: 40 Minutes

Best Charts: 1-minute, 2-minute, or 5-minute.

Why this works

Markets are not random; they are governed by human behavior, which repeats in rhythmic waves. By using Hurst's mathematical approach to shift price data, we can filter out market "noise" and focus on the underlying structural vibrations of the trading day.

Disclaimer: No indicator is a crystal ball. Always use proper risk management and wait for candle closes to confirm FLD breaks.