TSI: True Strength Index

الفكرة بكلمات بسيطة

The candle-to-candle change is smoothed twice with EMAs and divided by the equally smoothed size of the changes, giving a calm line between −100 and +100.

طريقة الحساب

Smooth the price change with EMA(25) then EMA(13); do the same with the absolute change; divide and multiply by 100. The signal line is an EMA(13) of TSI.

TSI = 100 × EMA(EMA(Δclose, 25), 13) ÷ EMA(EMA(|Δclose|, 25), 13)
Signal = EMA(TSI, 13)

كيفية الاستخدام

• TSI crossing its signal line.
• Zero line: above it buyers dominate.

استخلاص النتائج

• Readings beyond ±25 are often called strong; the exact levels vary by ticker.

ما يجب الانتباه إليه

• Double smoothing means late signals at sharp turns.

لمحة تاريخية

Developed by William Blau and published in 1991.