ウィリアムズ%R Complete Guide

ウィリアムズ%R

momentumParams: period=14

What is ウィリアムズ%R?

ウィリアムズ%R（ウィリアムズR）は、テクニカル分析で使用されるモメンタム指標です。価格のモメンタム、トレンドの方向性、またはボラティリティを分析することにより、トレーダーが潜在的なエントリーポイントとエグジットポイントを特定するのに役立ちます。

Signal Types

Overbought Exit

When the indicator moves from above -20 to below -20, it suggests a potential bearish reversal or pullback.

Oversold Exit

When the indicator moves from below -80 to above -80, it suggests a potential bullish reversal or bounce.

Failure Swing

If the indicator fails to reach the overbought zone (-20) during a price peak, it indicates weakening upward momentum.

Momentum Confirmation

Consistent readings near 0 to -10 confirm a strong uptrend; readings near -90 to -100 confirm a strong downtrend.

Related Indicators

FAQ

What is the difference between Williams %R and the Fast Stochastic Oscillator?

They are essentially the same, but Williams %R is inverted and uses a 0 to -100 scale, while Stochastic uses 0 to 100. Williams %R = (Highest High - Close) / (Highest High - Lowest Low) * -100.

Does an overbought reading mean I should sell immediately?

No. In a strong uptrend, the indicator can stay in the overbought zone for a long time. It is often better to wait for the indicator to cross back below -20 before considering a sell signal.

Can I change the default 14-period setting?

Yes. Shortening the period makes the indicator more sensitive (more signals, more noise), while lengthening it makes it smoother and less reactive to minor price fluctuations.

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Reviewed by KlineVision Research Team, CFA Charterholder, 10+ years quantitative research· 2026年4月23日

Parts of this page (FAQ, introductions) are AI-assisted. Core data and statistics are algorithmically computed. All pattern definitions are human-reviewed.

Data source: EODHD · Last updated: 2026年4月23日

免責事項：本ページは公開市場データとアルゴリズムによるテクニカル分析に基づいています。投資助言を構成するものではありません。