← THE CHARTSPOD LEDGEROPEN TERMINAL →
INDICATORS · ADX WARM-UP

ADX in Crypto: Warm-Up Bars and Short-History Errors

ADX applies Wilder smoothing twice — first to directional movement, then to DX. It needs more history than most indicators to settle.

By ChartsPod Editorial Team · Reviewed by ChartsPod Research
Published · Updated · 5 min read

Short answer

ADX(14) needs about 15 bars for the first +DI/−DI values and another 14 for the first ADX, so roughly 28 bars before ADX exists. Both stages use Wilder's recursive smoothing (weight 1/14), so values settle slowly; many practitioners use 100+ bars of history. On short series, ADX can read strong or weak trend purely from start effects. Compare against a long-history calculation before using ADX filters.

How much history ADX needs

ComponentBars neededType
True range, ±DM2Per bar
Smoothed ±DI (14)≈ 15Recursive
DX≈ 15Derived
ADX (14 of DX)≈ 28Recursive

Recursive smoothing: values depend on where the series starts and settle only gradually.

Short-history errors

ADX: illustrative value on the same bar by history lengthADX: illustrative value on the same bar by history length: Start 40 bars back 31 ; Start 150 bars back 22 ; Start 500 bars back 21 .ADX: ILLUSTRATIVE VALUE ON THE SAME BAR BY HISTORY LENGTHStart 40 bars back31Start 150 bars back22Start 500 bars back21
Different history, different ADX. Original ChartsPod editorial graphic.
  • Trend filters on new listings
  • Double smoothing start effects
  • Short data pulls
  • Gaps in candles
ADX warm-up checksADX warm-up checks: Bars available per symbol; First valid bar marked; Settling period for recursive parts; Same start date when comparing; Gaps restart or distort.ADX WARM-UP CHECKSBars available per symbolFirst valid bar markedSettling period for recursive partsSame start date when comparingGaps restart or distort
Check before thresholds. Original ChartsPod editorial graphic.

Rules

Related: ADX in Crypto: Why the Value Changes Before Candle Close, DMI in Crypto: Warm-Up Bars and Short-History Errors.

Load long history before reading ADX in ChartsPod.

Open ChartsPod

Compare against a long-history calculation before using ADX filters.

Review ADX in Crypto with bar replay before using it live.

Open ChartsPod replay

Questions readers ask

How many bars does ADX need?

About 28 to exist; more to settle.

Why so slow?

Two stages of Wilder smoothing.

How much history to use?

Often 100+ bars.

Sources and methodology

Indicator formulas are standard definitions; live-versus-closed behaviour follows TradingView's repainting documentation. Values in examples are illustrative.

  1. TradingView Pine Script: Repainting — live vs historical calculation.
  2. ChartsPod indicator reference — indicator calculations.
  3. ChartsPod indicator reference — indicator calculations.

This article explains research tools and workflows. It is not financial advice, does not recommend buying or selling any asset and does not predict prices. Crypto derivatives carry a risk of rapid and total loss of margin.

CHARTSPOD EDITORIAL EDITION · RESEARCH AND EDUCATION ONLY · NOT FINANCIAL ADVICE.