Summary
QStick is RTTA's streaming QStick indicator: a simple moving average of the
close-minus-open candle body. Positive values mean recent candles have been
mostly bullish; negative values mean mostly bearish.
Update API
value = rtta.QStick(window=14, fillna=True).update(open, close)
The nested SMA inherits fillna.
Theory Of Operation
Tushar Chande's QStick summarizes the average signed body of recent candles. Unlike pure close-based momentum, it uses the open-to-close move of each bar, so large-range bars that close near the open contribute little. Zero crossings can be treated as short-term trend shifts; extremes can flag exhaustion.
Recurrence
Let \(O_t, C_t\) be open and close and \(n\) be window (default \(14\)).
\[b_t = C_t - O_t\]
\[QStick_t = \operatorname{SMA}_n(b_t)\]
Implementation Notes
The recurrence is implemented in src/rtta/indicator.cpp in class QStick.
The sole member is an SMA fed with close - open.