Support et résistance : tracer les niveaux qui comptent
Les niveaux de support et de résistance sont les prix où acheteurs et vendeurs sont intervenus à plusieurs reprises — le squelette structurel du graphique.
What makes a level real
A support level is a price at which an asset has, in the past, found buyers and bounced. A resistance level is the mirror — a price at which sellers have stepped in and capped the move. The more times a level has been tested without breaking, the more it matters: each test reinforces the memory of market participants who acted there.
Drawing them honestly
A common mistake is fitting clean lines to ambiguous noise. A level should be visible on its own — multiple touches at roughly the same price across multiple separate visits. Use the body of the candle (or the close) rather than the wick when there is doubt. Round numbers ($100, $50,000) attract pseudo-levels because traders cluster orders there even when the chart doesn't justify it.
Breaks, retests, and role reversal
When a strong support breaks, the new behaviour is for the level to flip and become resistance on the way back up. This "role reversal" is one of the cleaner setups in technical analysis: the retest of a broken level often produces the strongest follow-through. A break that does not retest is statistically weaker.
How Signodex uses support and resistance
Signodex's AI Signal and Deep Analysis surface the most-tested levels visible in the chart window and explain why each one matters ("$67,400 is the third test of the prior all-time-high zone since the breakout in October"). The AI never instructs you to buy or sell at these levels; it tells you they exist and how the market has behaved at them before.
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⚠️ For informational purposes only. Not financial advice. See Disclaimer.