Assembling a sentiment zone oscillator as one contrarian filter

Overbought and oversold zones from ordered prices

The sentiment zone oscillator is constructed to mark overbought and oversold zones and potential entry or exit areas from ordered price observations.

It is described as a contrary measure of extreme optimism and pessimism on a vertical scale from plus one hundred to minus one hundred, with the zero line treated as unimportant.

Signed period count and triple smoothing

One implementation first takes the sign of the current price change. That signed period count records whether the chosen price series rose or fell from the prior bar before any smoothing or scaling.

A fourteen-period triple exponential moving average is then applied to the signed-move series so that short-lived reversals are damped. The smoothed result is scaled by one hundred divided by that lookback.

The construction is presented as a back-count of rising versus falling periods tempered by a smoothed exponential average so that brief reversals are less likely to generate signals.

Rolling extremes and fixed-seven thresholds

Dynamic overbought-oversold bands are built from the highest and lowest oscillator values over a thirty-period window, then inset by ninety-five percent of that range.

Several implementations also plot fixed-seven thresholds at plus seven and minus seven as alternative overbought and oversold markers.

One coded set of contrarian crossing rules

Several packaged implementations treat the oscillator as a leading contrarian study and pair it with an automated strategy that backtests the author's recommended application.

One coded strategy buys when a thirty-period average of the oscillator crosses above zero with price above a sixty-period exponential average, when price is above that average while the oscillator is below its dynamic oversold line and the thirty-period average is rising, or when that average is above zero, the oscillator crosses above the dynamic oversold line, and the sixty-period exponential average is rising.

The same strategy sells when the thirty-period oscillator average crosses above zero or when the oscillator crosses below plus seven while that average is falling.

Another use of the plus-seven and minus-seven lines

A separate reconstruction states that a crossing above plus seven is treated as an overbought buy cue and a crossing below minus seven as an oversold sell cue.

Editorial: test the construction as one procedure

TradersWeek editorial interpretation: the archive presents more than one way to turn the same oscillator into entries and exits. Dynamic overbought-oversold bands, a thirty-period oscillator average, a sixty-period price trend filter, and the fixed-seven thresholds are not interchangeable fragments.

A thirty-period average crossing above zero appears in both the buy list and the sell list of the same coded strategy, and the separate reconstruction treats plus seven and minus seven as the opposite pair of cues. Those construction choices should be checked as one set of contrarian crossing rules rather than as isolated formula fragments.