Asc broadening
A widening range tilted up: the 100-bar floor rises and the ceiling climbs faster.
It takes the highest and lowest close of the last 100 one-minute bars and measures how much each has moved over the last 20 bars, as a percent change. It marks a bar when the low has risen by more than eps (0.05 percent by default) and the high has risen faster than the low, so both lines climb and the range opens toward the top. The lines are rolling extremes of closes, not trendlines drawn through swing points, so it tests those numbers rather than the shape a trader would draw.
How to read it
- Markers sit on the candles. Each run of consecutive markers is one episode of the range widening upward.
- Over the September 2026 SPY sample, defaults gave about 25 episodes, roughly one a day, each about 8 bars long.
- The markers describe the range's shape at that moment. They do not say which way price breaks out next.
What it outputs
- Ascending broadening
- True on each bar where the 100-bar low rose more than eps over 20 bars and the 100-bar high rose faster than the low. Nothing is drawn on other bars.
When it fires
Fires on each bar where the 100-bar low has risen more than eps over the last 20 bars and the 100-bar high has risen faster than that low. A run is one episode; its first marker is the bar the condition first held.
Settings
- eps
- Minimum percent rise of the 100-bar low over 20 bars (0.05 is about 38 cents near SPY's 765). Raising it thins the markers: 0.1 left 8 episodes in the sample, 0.2 left none. At 0 any rise counts; below 0 a flat or falling floor counts too.
Pitfalls
- The lines are the highest and lowest closes of 100 bars, so they step rather than slope and ignore highs and lows. The floor's 20-bar change is exactly flat on at least half the bars in the sample.
- The high-above-low test is effectively always true, since both come from the same 100-bar window. Only the two slope tests filter bars.
- Rare at defaults, marking about 1% of bars. At eps -0.5 it marks about 36% of bars, including bars where the floor is falling, so the name stops describing it.