ADXR — ADX Rating

Today’s ADX averaged with the ADX from lookback bars ago. Wilder’s own smoothing of his smoothing: slower to rise, slower to fall, and less prone to the false regime flips that a single ADX crossing produces.

Signature

ADXR(period, lookback, on=<source>)

Argument	Type	Required	Notes
period	int Param or literal	Yes	ADX smoothing length. Default 14, bounds 1–100.
lookback	int Param or literal	Yes	How far back the second ADX reading comes from. Default 14, bounds 1–100.
on=	symbol	No	Source symbol. Defaults to the trade symbol. Reads high, low, close.

Formula

$$ \text{ADXR}_t = \frac{\text{ADX}t + \text{ADX}{t-m}}{2} $$

Warmup

About 2 × period + lookback bars — the ADX must seed before the lookback can fill.

Reading the value

adxr.value
adxr.value > 25

Example

class AdxrRegime(Strategy):
    """A slower trend gate than ADX alone."""
    trade = Symbol()
    sizing = FixedCapital()

    def execute(self):
        adxr = ADXR(14, 14, on=self.trade)
        sma = SMA(50, on=self.trade)
        if adxr.value > 25 and self.trade.close > sma.value and self.trade.is_flat:
            self.buy(self.trade, reason=f"ADXR {adxr.value:.0f}")
        if adxr.value < 20 and self.trade.is_long:
            self.sell(self.trade, self.trade.position, reason="Trend rating faded")

Notes

• Wilder (1978). The ADX inside is the same construction as the ADX indicator.
• Proven by an assert-via-trade run on SPY daily (stayed inside 0–100 on every bar of a 140-bar run; zero alarm trades).
• Direction-blind like ADX — pair it with ADX’s DI outputs for direction.