The signal the other Bishops miss
Bollinger Band Width measures the statistical channel. Standard deviation measures dispersion velocity. Both are calculated on closing prices and intrabar moves within the band envelope.
Neither one captures gaps.
When a ticker gaps up at the open, or prints a candle that leaps past the previous close, the True Range of that bar is large — but the band structure may not have caught up yet. The Orange Bishop fires on ATR expansion, which uses True Range explicitly. If a bar's range is large because it gapped, ATR knows. The other measures may not.
What True Range actually measures
Most traders think of range as High minus Low. True Range goes further. It is the largest of three values on every bar:
ATR is the 14-period EMA of True Range. Because it is exponentially smoothed, it reacts to recent bars more than older ones — a sudden cluster of large bars pulls the ATR up quickly. A return to small bars pulls it back down, but more slowly. ATR is persistent in a way that a simple average is not.
The expansion trigger
The Orange Bishop fires when current ATR is at least 50% higher than ATR was 5 bars ago. The same 5-bar lookback used by the other Bishops — but the threshold is different. ATR is already smoothed by its EMA, which dampens short spikes. A 50% increase in a smoothed value means something real happened — not a single large bar, but a sustained shift to bigger bars across the recent window.
This is a range signal, not a direction signal. A series of large green bars and a series of large red bars both expand ATR equally. The ♛Queen tells you direction. The Orange Bishop tells you the bars themselves have grown.
How it differs from the other Bishops
Each Bishop measures a different dimension of volatility. Understanding which one fired — and whether multiple fired together — tells you more than any single signal alone.
The ♝Red or Green Bishop fires when the band channel doubles in width. The ♝Purple Bishop fires when dispersion velocity doubles. The Orange Bishop fires when individual bar range grows by 50%. Three different lenses on the same underlying condition: the market is moving with more force.
When all three fire in the same window, the reading is clear. When only the Orange fires — ATR expanding while BBW and STD are still calm — it often means gap activity or isolated large bars rather than a sustained breakout. Context matters.
Like the ♝Purple Bishop, the Orange does not inherit the ♛Queen's color. Range expansion is directionally neutral. The Queen declares the side. The Orange Bishop confirms the candles have the size to carry it.
Why it matters for options
ATR is the closest volatility measure to how options traders think about risk. Position sizing, stop distance, and premium decay are all directly tied to how much range a bar typically covers. When ATR expands, the market is telling you that those assumptions have changed.
A stop that was sized for a 0.5-ATR environment is too tight in a 1.5-ATR environment. A premium that was priced for small bars becomes cheap when bars get large — or expensive, depending on which side of the trade you are on. The Orange Bishop firing is a recalibration signal: the rules of engagement for this session have changed.
For options specifically, ATR expansion means realized volatility is catching up to — or exceeding — what the market priced in. When the Orange Bishop fires during a ♝compression setup, it is often the first confirmation that the coil has truly released into larger-than-expected bars.
On any chart
ATR is built into every major charting platform. Add a 14-period ATR indicator to the sub-pane. Watch for sharp upward moves from a flat base — the smoothed line turning up quickly after a period of steady or declining values. That is ATR expansion.
To replicate the ratio trigger: divide the current ATR by the ATR value from 5 bars ago. When that ratio exceeds 1.5, the Orange Bishop has fired. One line of Pine Script on TradingView. Set an alert on the threshold and it becomes a live scanner.
Watch for candle size alongside the indicator. When ATR is expanding, the bars on the chart should look visibly larger — taller candles, wider wicks, more distance between open and close. If the ATR is rising but the bars look normal, check for a gap earlier in the session pulling the average up. That is a different condition — not a live expansion, but the lingering effect of a prior event.