CAN SLIM System Guide

William O'Neill's legendary stock selection methodology

What is CAN SLIM?
A systematic approach to identifying growth stocks

CAN SLIM is a stock selection system developed by William O'Neill, founder of Investor's Business Daily. The acronym represents seven key criteria that identify stocks with the highest probability of significant price appreciation.

O'Neill studied the greatest stock market winners over several decades and identified common characteristics that appeared before their major price moves. CAN SLIM encapsulates these characteristics into a systematic screening process.

The 7 CAN SLIM Criteria

C
Current Quarterly Earnings

Look for companies with recent quarterly earnings growth of at least 25% or higher. The most explosive stock moves occur when earnings accelerate.

A
Annual Earnings Growth

Examine the past 3 years of annual earnings growth. Companies showing consistent growth of 25% or more annually are strong candidates.

N
New Products or Services

Stocks tend to move most when companies introduce new products, services, or business models that drive earnings growth.

S
Supply and Demand

Check the stock's price strength relative to the S&P 500. Stocks in strong uptrends relative to the market tend to continue outperforming.

L
Leader or Laggard

Identify market leaders—stocks in the top 30% of their industry groups. Leaders tend to outperform laggards.

I
Institutional Sponsorship

Look for increasing institutional ownership. Mutual funds and pension funds buying shares can drive sustained price appreciation.

M
Market Direction

The overall market trend matters. Stocks perform best when the S&P 500 is in an uptrend, not a downtrend.

Historical Performance
Proven track record of identifying market winners

William O'Neill's research showed that stocks meeting all 7 CAN SLIM criteria had a significantly higher probability of producing 100%+ gains compared to the broader market. During bull markets, CAN SLIM stocks have historically outperformed by 3-5x the S&P 500.

The system is designed to identify stocks in early stages of major uptrends, before they become widely recognized. This timing advantage is crucial for capturing the largest gains.

How to Use the CAN SLIM Scanner
Step-by-step guide to analyzing stocks
1

Enter a Stock Symbol

Type the ticker symbol of any US stock you want to analyze.

2

Review the Criteria Scores

The scanner evaluates each of the 7 criteria and shows a score (0-100) for each.

3

Check the Overall Score

A higher overall score indicates a stock that better matches the CAN SLIM criteria.

4

Review Chart Patterns

Look for bullish patterns like cup-with-handle or double-bottom formations.

5

Identify Entry Points

Use the suggested buy point and stop loss level for position sizing and risk management.

Key Principles
Essential concepts for successful CAN SLIM investing

Growth is Key

CAN SLIM focuses on growth stocks, not value stocks. Look for accelerating earnings, not cheap valuations.

Timing Matters

The best CAN SLIM stocks are identified early in their uptrends, before they become widely recognized.

Market Context

Even great CAN SLIM stocks struggle in bear markets. Always consider the overall market trend.

Risk Management

Use stop losses to limit downside risk. O'Neill recommends cutting losses at 7-8% below entry.