Stan Weinstein and the book behind the four stages

The short version

Stan Weinstein is an American market analyst who spent decades studying charts and writing about them. His big contribution is a simple idea: every stock is always in one of four stages — basing, advancing, topping or declining — and you should only buy in the advancing one.

He wrote it down in 1988, in a book called Secrets for Profiting in Bull and Bear Markets. Nearly four decades later it is still one of the most recommended books for people who want to invest with the trend instead of against it. Stage2Stocks is built on it.

Who he is

The story usually told is that Weinstein learned the hard way: as a college student he was caught in the 1962 crash, and the loss sent him to study charts instead of tips. By the early 1970s he was publishing a market newsletter, The Professional Tape Reader, which became one of the most followed market letters of the 1980s, known for calling big turns in the market.

The newsletter had a hard discipline built in: every issue, in print, he had to say where the market was heading and which stocks to own — and live with it when he was wrong. The method in the book comes out of that. It is not an academic theory. It is what was left after years of being tested in public.

Later he moved on to research for large investment firms. The book is how most people know him.

The six ideas that made the book last

The book covers a lot, but most of its value comes down to six ideas. Each one shows up somewhere on this site.

1. Classify, don't predict

Weinstein doesn't ask you to guess where a stock is going. He asks you to recognise where it is. Resting, rising, stalling or falling — you can see that on a chart today, without a forecast. Most mistakes, in his view, come from acting against the stage: buying something falling because it looks cheap, or selling something rising because it "has gone up too much".

His best-known rule follows from it: never buy a stock in Stage 4, however cheap it looks or however good the story sounds.

Lesson 1: the four stages →

2. One line on a weekly chart

He read everything on a weekly chart, against a single line: the 30-week moving average. Weekly charts cut out day-to-day noise; the 30-week line shows the trend. Price above a rising line is healthy. Price below a falling line is not.

Lesson 2: the 30-week average →

3. The market first, then the sector, then the stock

Weinstein called it looking at the forest before the trees. Most stocks move with the market, so a great chart in a falling market is fighting the tide. He checked the overall market first, then which sectors were strong, and only then looked for stocks — in strong sectors, in a healthy market.

Today's market read → · Sector rotation →

4. Volume confirms the breakout

When a stock breaks out of its base into Stage 2, he wanted to see a clear jump in trading volume. Heavy volume means real buyers are arriving. A breakout on thin volume is easier to fake and more likely to fail.

5. Buy strength, not weakness

He preferred stocks that were doing better than the market — strong relative strength — over stocks that were lagging it. Leaders tend to keep leading. A stock that can't keep up with a rising market is telling you something.

Relative strength leaders →

6. Know where you're wrong before you buy

Every buy in the book comes with a stop — a price below which you admit the idea failed and get out. As the stock rises, the stop is raised behind it, so a winner can run while a loser is cut small. Protecting money comes first; everything else depends on it.

The whole method, on one NSE stock

Here is the cycle Weinstein described, playing out on CG Power between 2019 and 2021.

Notice what the method asked of you. Not to catch the bottom — the bottom was inside a stage you were told to avoid. Just to recognise, once the base had formed and the price broke out above a line that was turning up, that the stage had changed.

What changes on the NSE

Weinstein wrote about American stocks, but his rules are about how buying and selling pressure shows up on a chart, and that works the same way in Mumbai as in New York. A few things do need extra care here.

Liquidity. Thousands of stocks trade on the NSE, and many are small and thinly traded. A few large orders can push one up sharply without any real change in the business. A breakout in a stock that trades actively is worth far more than the same pattern in one that barely trades.

Price limits. Many Indian stocks have daily price bands. A stock that hits its limit can't trade further that day, so moves sometimes arrive in steps over several days rather than in one bar. Weekly charts — Weinstein's choice anyway — smooth this out.

The scale of the job. Weinstein went through hundreds of charts by hand every weekend. On the NSE, that is 2,125 stocks with enough history to classify. That is the part we do for you: every one of them is given a stage after each close, and you can see the chart behind each one.