What is Preliminary Support (PS) in Wyckoff?
Preliminary Support is the first appearance of institutional buying during a markdown. It slows the decline without reversing it, signaling that demand is entering the market ahead of the selling climax that typically follows.
How It Works
You'll notice PS as a bounce that shouldn't be there. The markdown has been smooth, sellers in control, and then a candle prints with above-average buying volume. Price rallies briefly before the decline resumes. That interruption is PS. It doesn't mark the bottom. The Selling Climax usually pushes price lower after PS appears. But PS changes the character of the decline. Candles start shortening. Volume patterns shift. The clean, unchecked drop begins to stutter. PS can be a single bounce or a cluster of candles where buying volume shows up for the first time in weeks. What matters is relative change: institutional activity where there was none before.
Why It Matters
PS puts you on alert. On its own it's not tradeable, but it reframes the markdown. When PS is followed by a Selling Climax and then an Automatic Rally, you know a potential accumulation range is forming and can start mapping the structure.
Common Mistake
Going long at PS because it looks like a reversal. PS slows the decline but doesn't end it. The selling climax that follows takes price lower. PS is context for what's coming, not a trade signal.
Example
A bounce appears during a markdown and you label it PS. But the bounce occurs on average volume and price resumes lower without any change in the decline's character. That's not PS. It's noise within the markdown. Real PS shows above-average buying volume where the trend previously moved without resistance. The volume shift is the signal, not the bounce itself.
Stoic Insight
Seneca: 'It is a rough road that leads to the heights of greatness.' PS appears during the markdown, the roughest part of the chart. It's the first sign that the rough road has a destination.
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