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How to Make Money in Stocks
Desk Diary 2005
by William J. O'Neil
A Summary by StoryShots
Also available in:🇫🇷Français
Most winning stocks flash the same seven warning signs before they explode.
Introduction
Most investors lose money because they buy what feels safe and sell what feels scary. That is exactly backward. William J. O'Neil wrote How to Make Money in Stocks: A Winning System in Good Times and Bad to show that winning in the stock market is not about predicting the future. It is about recognizing patterns that repeat in every major stock winner before it makes its big move.
The CAN SLIM System Separates Winners from Losers
The CAN SLIM formula is pattern recognition built from decades of data. C stands for current quarterly earnings, up at least 25 percent year-over-year. A is annual earnings growth. N means new: new product, new management, new high. S is supply and demand. L is leader, not laggard. I is institutional sponsorship. M is market direction. Three out of four stocks follow the overall market, so if the market is in a confirmed downtrend, even perfect stocks fail. You are probably buying stocks because they are cheap or familiar. You are ignoring the seven factors that actually predict success. "The whole secret to winning in the stock market is to lose the least amount possible when you're not right." But knowing the pattern means nothing if you buy too early.
Timing Your Entry Separates Amateurs from Professionals
The right stock at the wrong time is still the wrong trade. Wait for a proper base. A base is a consolidation period where a stock moves sideways for at least seven weeks. The breakout happens when the stock surges past its prior high on volume at least 50 percent above average. That volume spike confirms demand. Most investors see a stock they like and buy immediately. Then they watch it drift sideways for months, bleeding patience and capital. "What seems too high and risky to the majority usually goes higher and what seems low and cheap usually goes lower." Even perfect entry timing fails without ruthless exit discipline.
Cut Losses Fast and Let Winners Run
This is where most investors destroy themselves. They hold losers hoping for a comeback and sell winners the moment they see a small profit. The system flips this. Cut every loss at 7 to 8 percent below your purchase price. No excuses, no exceptions. That single rule protects your capital. On the winning side, hold as long as the stock keeps making new highs on strong volume. Sell only when it breaks below its 50-day moving average on heavy volume. The math is brutal. If you lose 50 percent on a stock, you need a 100 percent gain just to break even. But if you cut losses at 8 percent, you only need an 8.7 percent gain to recover. "The investor's chief problem, and even his worst enemy, is likely to be himself." If this changed how you think about stock investing, someone in your life probably needs to hear it too.
Final Summary
This summary of How to Make Money in Stocks by William J. O'Neil connects pattern recognition, precise entry timing, and disciplined exits into one argument: the stock market rewards those who follow repeating patterns, not predictions. But the system goes deeper. The full summary covers how to read charts like a professional, how to identify which market stage you are in before you risk a dollar, and the exact characteristics of volume and price action that signal institutional accumulation. For the full summary of How to Make Money in Stocks, head to the StoryShots app.
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