QQE

What is QQE?

QQE (Quantitative Qualitative Estimation) is a smoothed-RSI system with a built-in trailing level. It smooths a standard RSI with a short EMA, measures the typical size of that line's own bar-to-bar moves with a Wilder-style average (RMA), and offsets a trailing level from the line by a multiple of that value. The classic parameterization uses a 14-period RSI, a 5-period smoothing EMA, and a 4.236 multiplier. The result behaves like a chandelier stop applied to the oscillator instead of to price.

Authorship is uncertain: QQE spread through forex forums in the mid-2000s and survives in many variants, so any single formula is one implementation among several. Its appeal is behavioral. Because the trailing level ratchets rather than tracking every wobble, QQE can hold a bias through oscillations that whipsaw raw-RSI rules, at the cost of reacting later when momentum genuinely turns. That places it closer to a trend-following device than to a classic overbought/oversold oscillator.

How traders use it

• As a stop-and-reverse on momentum: bullish bias while the smoothed RSI holds above its trailing level, bearish once it crosses below, typically with fewer flips than raw RSI threshold rules produce.
• With the 50 midline as a second gate: many variants only honor trailing-level crosses that agree with which side of 50 the smoothed RSI occupies.
• At extremes as a stretch warning, where a smoothed RSI far from 50 argues against chasing even while the trailing level still holds the trend.
• As a cleaner input for downstream logic (divergence checks, threshold alerts), since the smoothing removes most one-bar spikes before they can trigger anything.

QQE vs. other RSI-based tools