No. 139
Làm Giàu Qua Chứng Khoán (How to Make Money in Stocks)
William J. O'Neil
How to Make Money in Stocks is William J. O'Neil's system for identifying and timing investments in high-growth stocks before their biggest price moves, built around his CAN SLIM framework — an acronym distilling seven characteristics O'Neil's historical research found common to the market's biggest winning stocks before they broke out. The book's central claim is that the very best-performing stocks share an identifiable, repeatable pattern across decades of market history, and that ordinary investors can learn to systematically recognize that pattern rather than relying on stock tips, broad diversification, or pure buy-and-hold investing.
O'Neil walks through each letter of CAN SLIM in turn: current quarterly earnings growth, annual earnings growth over several years, new factors (new products, management, or price highs), supply and demand (float size and trading volume), leadership versus laggard status within an industry, institutional sponsorship, and overall market direction. A recurring emphasis throughout is that even a great company can be a bad investment if bought at the wrong time relative to the overall market trend — O'Neil devotes substantial attention to reading general market direction through daily price and volume action in major indexes, arguing most major market tops and bottoms show detectable technical signs before they become obvious.
The book combines this fundamental screening approach with a detailed technical methodology for timing entries, centered on chart patterns — most famously the "cup with handle" pattern — that O'Neil's research found preceded many of history's biggest stock winners' major price advances. Alongside stock selection and timing, the book devotes significant space to risk management, most notably O'Neil's rule of selling any stock that falls a fixed percentage (commonly cited as around 7-8%) below its purchase price, without exception, as a mechanical discipline meant to cap losses regardless of the investor's conviction in the underlying story.
The book closes with material on portfolio management — position sizing, when and how to sell winners, and common psychological investing mistakes — and situates the whole system as being derived not from theory but from O'Neil's own historical study of what the market's actual biggest winners looked like before they became widely recognized as such.
Who This Is For
Active, hands-on individual investors willing to do ongoing chart and fundamental screening work, rather than passive buy-and-hold investors.
When To Read This
Useful both as an initial system to learn and as a reference to revisit repeatedly, since O'Neil intends CAN SLIM to be applied continuously rather than learned once.