Stan Weinstein's 1988 book Secrets for Profiting in Bull and Bear Markets introduced a four-stage model of stock price behaviour. It remains one of the clearest frameworks for deciding when to buy, hold, and sell.
For educational purposes only. This article describes a publicly documented analytical framework. Nothing here is investment advice. Trading involves substantial risk of loss.
Stan Weinstein's 1988 book Secrets for Profiting in Bull and Bear Markets introduced one of the most practically useful frameworks in all of technical analysis: the four-stage model. The idea is simple — every stock (and every market index) cycles through four distinct phases, and successful trading means knowing which stage you're in before committing capital.
The framework influenced a generation of traders, including Mark Minervini (who explicitly references Stage 2 as a prerequisite for SEPA entries) and countless others who use it to filter their universe.
After a prolonged downtrend, a stock enters a period of basing. The downtrend exhausts itself, and price moves sideways for weeks or months. Volume typically declines. The 30-week (150-day) moving average flattens out after pointing down for a long time.
This is the accumulation phase — patient investors are quietly buying from sellers who gave up. The public largely ignores the stock; it's coming off a downtrend and there's no excitement. But underneath, the selling pressure that drove the downtrend is being absorbed.
What to do in Stage 1: Watch. Don't buy yet. The basing might be real or the stock might simply be resting before another leg down. You need confirmation before acting.
Stage 2 begins when the stock breaks out of its base on expanding volume. The 30-week MA turns upward. The stock moves to new highs above the base ceiling. This is the sweet spot — the phase where all the big gains are made.
Weinstein's rule: only go long in Stage 2. Everything else is noise. The stock must be above its 30-week MA, the MA must be pointing up, and the stock should have broken out of a Stage 1 base on volume to confirm the transition.
Stage 2 can last months or years in a genuine bull market leader. The goal is to get in early in Stage 2 and hold until there are clear signs the stock is transitioning to Stage 3.
Eventually the advance slows. The stock starts moving sideways again, but unlike Stage 1, it's doing so at elevated prices. Volume may pick up on down days. The 30-week MA flattens again, but this time at a high level rather than a low one.
Stage 3 is the distribution phase — institutional investors who accumulated in Stage 1 and rode Stage 2 are now quietly selling to the public, which is only now paying attention because the stock has been in the news. The public's buying absorbs the institutional selling, keeping the price roughly flat for a time.
What to do in Stage 3: Reduce or eliminate long positions. The easy money has already been made, and the risk is increasing. Do not add to positions — the next move is likely down.
The stock breaks below the Stage 3 base, the 30-week MA turns down, and a new downtrend begins. Volume typically spikes on the breakdown day — the institutional selling that was contained in Stage 3 becomes explicit. Stage 4 can last as long as Stage 2.
What to do in Stage 4: Have no long positions. Either go short (if you trade short-side) or be in cash. Many investors hold Stage 4 stocks hoping for a recovery — Weinstein's research showed this strategy destroys wealth over time.
Weinstein's primary tool is the 30-week (approximately 150-day) moving average:
For the broad market itself, the same framework applies. When most major indices are in Stage 2 — above rising 30-week MAs — the environment broadly favours long strategies. When they move into Stage 3 and 4, cash and short positions outperform.
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