What Triggers a Bullish Trendline
A Bullish Trendline appears after what's called a double top breakout — a column of X's rises above the high of an earlier X column, confirming that buyers have pushed price past a level it previously failed to clear. That confirmation is what "unlocks" the trendline.
How It's Drawn
The line starts one box below the most recent significant low and rises diagonally at a 45-degree angle from there, moving up one box for every column that passes. It functions as a rising support level — a floor that moves upward over time as the underlying uptrend continues.
Reading the Signal
- Price above the line: The uptrend is considered structurally intact. This is read as the ongoing bullish (buy-side) picture.
- Price breaks below the line: The support has failed. This doesn't automatically mean a reversal, but it's typically the first visual warning that the uptrend's structure has weakened.
Where to See It
On any fund, stock, or index chart, toggle "Bullish Only" in the trendline options to isolate this line. It's especially useful alongside the Buy Signal (a fresh column of X's) — the trendline gives you the broader structural context the single signal doesn't.