Stan Weinstein's Stage Analysis: How to Use the 30-Week Moving Average to Identify Entries and Manage Trailing Exits
Stan Weinstein's stage analysis trading method divides stock prices into 4 stages, centered on the 30-week simple moving average (30-week SMA) on weekly charts. It looks for buying opportunities in 2, when an upward trend begins. The key is not simply a breakout above the moving average, but checking the trend direction, breakout above previous resistance, trading volume, and stop-loss criteria together.
There are three important points to understand when applying this method based on 2026-10-30.
Look for entry opportunities in 2, when the 30-week moving average is rising.
Set a stop-loss price before buying, and never move the stop-loss level downward as the price rises.
Strengthen trailing-exit management when signs of entering 3 appear, and reassess the rationale for holding a position in 4.
However, the 30-week moving average is a lagging indicator. A single move above the line does not confirm that an upward trend has been established.
How Is the 30-Week Moving Average Calculated?
The 30-week moving average is a simple moving average (SMA) calculated by adding the weekly closing prices from the most recent 30 weeks and dividing the total by 30. Once a new weekly closing price is finalized, the oldest weekly closing price is removed and the latest closing price is included.
The calculation formula is as follows.
30-week SMA = Sum of closing prices over the most recent 30 weeks divided by 3030 weeks
\ SMA = \frac{Sum\ of\ closing\ prices\ over\ the\ most\ recent\ 30\ weeks}{30}
For example, if the sum of the closing prices over the most recent 30 weeks is KRW 1,500,000, the calculation is as follows.
1,500,000 ÷ 30 = KRW 50,000
1,500,000\div 30=KRW 50,000
This is a hypothetical calculation example, not actual stock price data for any listed company.
There are several distinctions to understand here.
30-week SMA: Assigns equal weight to the closing prices from the most recent 30 weeks.
30-week WMA: Assigns greater weight to more recent prices.
30-week EMA: Uses exponential weighting to respond more sensitively to recent price movements.
To reproduce Stan Weinstein's original method, the standard approach is to use the 30-week simple moving average on a weekly chart.
The book Secrets for Profiting in Bull and Bear Markets, published in 1988, also discusses the 30-week moving average and stage analysis. The original calculation method can also be found in Robert Brain's explanation of the 30-week moving average.
What Makes the Four Stages of Stock Prices Different?
Stage analysis is not simply a technique for checking whether the stock price is above or below the moving average. It evaluates the slope of the moving average, the position of the stock price, and price movements together.
| Stage | Direction of the 30-week moving average | Stock price movement | General assessment |
|---|---|---|---|
| 1 | Sideways after declining | Consolidation in a bottom range | Observe |
| 2 | Rising | Rising above the moving average | Consider buying |
| 3 | Sideways after rising | Fluctuating near the highs | Manage risk |
| 4 | Falling | Declining below the moving average | Avoid new purchases |
1: Finding Direction Near the Bottom
1 is the period when the downward trend slows and the stock price moves within a relatively defined price range.
The 30-week moving average, which had previously been declining, gradually flattens, while the stock price moves around the moving average.
During this period, check the following:
Are previous lows holding without repeatedly breaking down?
Is the stock price forming a defined trading range?
Is the downward slope of the 30-week moving average weakening?
Does trading volume decline and then recover during upward weeks?
1 is not a stage in which a buy signal has been fully established. Rather than trying to predict the exact bottom, this is the stage for observing where resistance is forming.
2: The Upward Stage for Identifying Buying Opportunities
2 is the stage that Weinstein's method considers most important.
When the stock price breaks above the upper boundary of the 1 trading range and the 30-week moving average turns upward, consider whether the stock has entered an upward stage.
The conditions to check, according to arongroups.co, are as follows.
1. The stock price breaks above the previous trading range's resistance level.
2. The weekly closing price finishes above the resistance level.
3. The 30-week moving average stops declining and begins showing an upward direction.
4. Trading volume increases above its usual level during the breakout.
5. The stock's relative strength is better than that of the overall market.
Here, Relative Strength refers to comparing whether a stock is showing stronger price performance than a market index. It is a different indicator from the Relative Strength Index (RSI).
Weinstein's method also emphasizes a specific analysis sequence: examine the overall market first, then the industry, and finally the individual stock.
3: The Stage When the Upward Trend Begins to Weaken
3 stage is the period when a previously rising stock can no longer make clear upward progress and begins moving sideways near its highs.
The upward slope of the 30-week moving average may weaken, while the stock price fluctuates above and below the moving average.
At this point, protecting profits in existing holdings becomes more important than opening new positions.
The following points should be monitored:
Is the stock failing to break above its previous high?
Is the slope of the 30-week moving average flattening?
Is trading volume increasing during declining weeks?
Are the magnitude of upward and downward price movements increasing?
Are previous support levels holding?
In his original work, Weinstein explains that when 3 stage begins, investors should consider selling part of their holdings and setting a stop-loss below a new support level for the remaining shares.
In other words, 3 stage should be understood as a period requiring defensive portfolio management rather than an automatic signal to sell every share.
4 Stage: The Downtrend Develops
4 stage is the phase in which the stock trades below the declining 30-week moving average and a downward trend takes shape.
When previous support levels break and the 30-week moving average also turns downward, the conditions for buying with a long-term investment perspective become weaker.
Even if the stock temporarily rebounds during this stage, it is difficult to conclude that a new uptrend has been confirmed while the 30-week moving average continues to decline.
Weinstein's basic principle is not to buy a stock that has entered 4 stage simply because it appears undervalued.
When Should You Actually Enter a Trade?
The most basic entry point is when the price breaks above the upper boundary of the 1 stage trading range and the 30-week moving average turns upward. Rather than simply buying the moment the stock price moves above the 30-week moving average, it is important to confirm whether the price has broken through previous resistance.
stageanalysis.net### What to Check Before Buying
First, check the overall market index.
Determine whether the broader market is in 1 or 2 stage, or whether it is weakening into 3 or 4 stage.
Second, examine the sector trend.
Even if an individual stock looks strong, you should be cautious about buying when its entire sector is weakening.
Third, identify the upper boundary of the stock's trading range.
Mark the price level where upward movements have repeatedly stalled as resistance.
Fourth, check the weekly closing price and trading volume.
There is a difference between briefly moving above resistance intraday and finishing the week with a closing price above that level. Wait until the weekly candle is complete before confirming the breakout.
Fifth, determine your stop-loss price in advance.
If you decide only on the purchase price and leave the stop-loss decision until later, controlling potential losses becomes difficult.
Breakout Buying vs. Buying the First Pullback
| Category | Breakout Buying | Pullback Buying |
|---|---|---|
| Entry point | Break above the trading range | Correction after the breakout |
| Confirmation factors | Weekly closing price and volume | Support holding and rebound |
| Advantage | Participation early in a trend reversal | Stop-loss levels may be relatively easier to define |
| Risk | False breakout | The uptrend may already have weakened |
Breakout buying involves entering after confirming a trend reversal.
Pullback buying involves waiting for a correction after an advance and checking whether support holds near the 30-week moving average or the former resistance level that was broken.
Both approaches are inconsistent with Weinstein's original buying conditions when the stock is trading below a declining 30-week moving average.
Should You Place Your Stop-Loss Below the 30-Week Moving Average?
Not necessarily. The initial stop-loss price should not be determined solely by the 30-week moving average. Instead, it should be based on a significant previous low and support level established before the breakout.
Rather than applying a fixed 5% or 10% stop-loss rule uniformly to every stock, Weinstein emphasized taking the chart's support structure into account.
Setting the Initial Stop-Loss
Consider the following hypothetical stock as an example.
Hypothetical Trading Example
Upper boundary of trading range
KRW 50,000
Purchase price
KRW 52,000
Previous support low
KRW 48,000
Initial stop-loss price
KRW 47,500
Risk per share · Author's calculation
KRW 4,500
KRW 52,000 - KRW 47,500
If the purchase price is KRW 52,000 and the stop-loss price is KRW 47,500, the expected risk per share is KRW 4,500.
The reason for placing the stop-loss below the bottom of the trading range is to allow some room for temporary price fluctuations while identifying the point at which the original bullish scenario is invalidated.
However, setting the stop-loss too far away also increases the amount you stand to lose on a single trade.
Calculating Position Size Based on Account Risk
Once you have determined the stop-loss price, the next step is to calculate the number of shares to buy.
Consider the following hypothetical conditions.
Investment account: KRW 10,000,000
Maximum risk per trade: 1%
Entry price: KRW 52,000
Stop-loss price: KRW 47,500
The author's calculation is as follows.
KRW 10,000,000×1%=KRW 100,000KRW 10,000,000\times1\%=KRW 100,00052,000−47,500=KRW 4,50052,000-47,500=KRW 4,500100,000÷4,500=22.22100,000\div4,500=22.22Therefore, after rounding down to a whole number, the purchase quantity is 22 shares.
| Item | Calculation Result |
|---|---|
| Risk budget per trade | KRW 100,000 |
| Risk amount per share | KRW 4,500 |
| Number of shares to buy | 22 shares |
| Purchase amount | KRW 1,144,000 |
| Estimated loss if the stop-loss is triggered | KRW 99,000 |
This calculation is a hypothetical example that excludes commissions, taxes, slippage (the difference between the order price and the actual execution price), and downward price gaps.
A real stop-loss order is not guaranteed to execute at the specified price, so the estimated loss may differ from the actual loss.
※ This article is for informational purposes only and is intended to help readers understand market trends. It is not an investment recommendation for any specific stock or asset. You are responsible for your own final decisions and investment risks.