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Every named shape traders use on a stock chart, plus the surrounding ideas: volume, ETFs, and Treasury bills. A pattern is a description of what already printed. It is not a promise of what comes next. Research only, not advice.
What it looks like. Three peaks. The middle peak (the head) is the highest. The two side peaks (shoulders) are lower and roughly even. A neckline joins the troughs between them.
Probable next move. A break under the neckline often leads lower, by about the height of the head above the neckline.
One of the most studied reversal shapes. Volume often fades into the head and picks up on the break.
Names follow the standard technical-analysis catalog (Edwards and Magee, Nison, Bulkowski, and the common chart-school lists). Historical studies of candlestick patterns show most single-bar signals are close to a coin flip once the market's own drift is removed. Use the name to describe the chart. Do not treat it as a trade.
