A line connecting at least two consecutive lows (uptrend) or highs (downtrend).
Trendlines are the simplest and at the same time most effective charting tool. In an uptrend the trendline connects rising lows and acts as dynamic support — as long as price stays above it, the trend is intact. A break of the line is often the first technical signal of a reversal. Important: the more often a trendline has been respected, the more meaningful a break becomes. Suna AI Vision lets the vision models draw trendlines themselves — the majority view across 25 models is far more robust than a single trader's subjective take.
DAX D1: an uptrend line since October with 4 touches. A break on the 5th touch = a very strong reversal signal.