Reading the market regime before prices move

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After hours

Cycles

Hilbert dominant cycle period

HT Dominant Cycle Period

It calibrates the windows of the other indicators automatically.

The short answer

What is the Hilbert dominant cycle period (HT Dominant Cycle Period)?
Hilbert dominant cycle period: the length of the dominant cycle, in candles.
When is HT Dominant Cycle Period wrong?
It assumes a cycle exists in the first place. See its current reading on the platform's symbols, at the latest daily close, in the "Reading now" table on this page. See its reading now →
Hilbert cycle: a worked exampleIt errs in the uptrend leg of the reference path.14RisingSidewaysFallingPriceWorked exampleDominant CycleActual cycle
Hilbert cycle: a worked exampleIt errs in the uptrend leg of the reference path.14RisingSidewaysFallingPriceWorked exampleDominant CycleActual cycle
Hilbert cycle: a worked exampleIt errs in the uptrend leg of the reference path.14RisingSidewaysFallingPriceWorked exampleDominant CycleActual cycle
A worked example: the indicator is calculated with its formula on one hypothetical path (rise, then sideways, then decline), not on real stock prices. Orange marks where it goes wrong.

Reading now

On the close of Oct 13, 2026 · daily candles · the same formula plotted above

TickerValueFive sessions agoStatus
SPY 14.52 16.09 Lower than five sessions ago
QQQ 17.31 16.25 Higher than five sessions ago
IWM 24.58 24.96 Lower than five sessions ago
DIA 28.27 28.88 Lower than five sessions ago

A description of where the number sits against its thresholds. It is not an entry or exit signal.

Where it fails

Indicator limit

It assumes a cycle exists in the first place.

Read it with

Relative Strength Index: set its length from RSI, half the cycle, instead of a fixed 14.

Answers: is it moving in a cycle?

What it actually does

Measuring the dominant cycle length with the Hilbert transform produces one number: how many sessions the market takes to finish its current cycle from low to low. The number changes live as the market's rhythm changes. If a cycle shortens from thirty sessions to fifteen, the measurement catches it as it happens.

What the cycle number is for

It is the adaptive window calibrator. Every fixed-window indicator (average · oscillator · channel) assumes a certain rhythm, and the conventions (14 · 20 · 50) are only general guesses. Setting the window to half the measured cycle length, as the method suggests, keeps the indicator in step with the asset's actual rhythm instead of a borrowed convention.

How it is used in practice

Use it as an input, not an indicator. Advanced systems read it and periodically reset the windows of their tools with it. Watching it directly also helps: a sudden shortening of the cycle means a market whose rhythm is speeding up, an environment changing before prices do.

Hypothetical example

A 14-period oscillator works well for months, then its accuracy collapses. Measuring the cycle shows the asset's rhythm moved from 28 sessions to 40, so the old window was now measuring a bit more than half a cycle instead of exactly half. Resetting the window to 20 restores the sync.

Where it errs and why

In a market with no dominant cycle it still outputs a number, a measurement of something that is not there. It also jumps around at turning points, so rely on its recent average, not a single reading.

Read it with

It is not read alone. The environment is classified with the trend strength indicator, confirmed with volume, and placed on the structural levels from the gamma map, since a signal at a dense wall carries more weight than one in open space.

Where to see it on the platform

The technical chart in the members area shows it in its full family on any symbol and timeframe you choose.

Questions about the Hilbert HT Dominant Cycle Period

How is the Hilbert dominant cycle period calculated?
The length of the dominant cycle, in candles.
How do I read the Hilbert dominant cycle period?
It calibrates the windows of the other indicators automatically.
When does the Hilbert dominant cycle period mislead?
It assumes a cycle exists in the first place.