How to make money in stocks: a winning system in good times or bad

『How to make money in stocks』の要約

1. 1

   The Investor's Roadmap: Mastering the Art of Stock Selection

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   William O'Neil's groundbreaking work reveals a profound truth: successful investing isn't about luck or insider connections-it's about following a proven system based on over a century of market data. Since its publication in 1988, "How to Make Money in Stocks" has become a cornerstone text for serious investors, with Warren Buffett himself acknowledging its value. What sets this book apart is O'Neil's data-driven approach, analyzing every major market winner since 1880 to identify the common characteristics that preceded their spectacular rises. This isn't theory-it's a battle-tested methodology that has guided investors through bull markets and devastating crashes alike.

2. 2

   The CAN SLIM System: A Proven Formula for Market Success

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   The cornerstone of O'Neil's approach is the CAN SLIM system-a powerful framework identifying seven critical characteristics found in virtually every market-beating stock before its major price advance. This isn't about hunches or hot tips; it's about recognizing patterns that have consistently predicted stock performance across more than a century of market cycles. The system begins with Current quarterly earnings (C), which must show substantial growth-ideally 25% or more-compared to the same quarter the previous year. Nearly every major market winner displays this trait before its significant price movement. When Dell Computer began its spectacular rise in the 1990s, it wasn't because of market hype but because its quarterly earnings had jumped 92%, 142%, and 130% in consecutive quarters. Annual earnings growth (A) provides the foundation, with the best performers showing consistent increases of 25% or higher over three years. This consistency separates truly excellent companies from one-hit wonders. O'Neil's research reveals that the median annual earnings growth for outstanding stocks was 36% during their emerging growth phase. What's often overlooked is Return on Equity (ROE)-a critical measure of management efficiency. Nearly all exceptional growth stocks show ROEs of at least 17%, with the best performers often reaching 25-50%. This metric reveals how effectively a company uses shareholders' capital to generate profits. The "N" in CAN SLIM represents what drives truly explosive growth: New products, management, or industry conditions. Apple's transformation from struggling computer maker to the world's most valuable company wasn't accidental-it stemmed from revolutionary products like the iPod, iPhone, and iPad that created entirely new markets. Similarly, Netflix's streaming service fundamentally changed how people consume entertainment, propelling its stock to extraordinary heights. Supply and demand factors (S) focus on trading volume-the essential but often overlooked companion to price movement. When institutional investors like mutual funds and pension funds begin accumulating a stock, their buying power creates the demand needed to drive prices higher. O'Neil teaches investors to recognize these volume signatures, which often precede major price advances. Leadership (L) emphasizes selecting the strongest stocks in the strongest industry groups. History shows that the top two or three companies in leading industries consistently outperform their peers by enormous margins. During the 1979-1980 computer boom, Wang Labs and Prime Computer delivered 5-7x returns while IBM barely moved. The pattern repeats across decades and industries. Institutional sponsorship (I) recognizes that professional investors provide the buying power needed for substantial price increases. The best stocks typically show increasing ownership by top-performing mutual funds over several quarters before their major advances. Finally, Market direction (M) acknowledges the overwhelming influence of overall market trends on individual stocks. O'Neil's research shows that roughly 75% of all stocks follow the general market direction-making it essential to align your investing with the prevailing trend rather than fighting against it.

3. 3

   Reading Charts Like a Professional: The Visual Language of Success

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   While many investors dismiss technical analysis as tea-leaf reading, O'Neil demonstrates that chart patterns are simply visual representations of supply and demand-showing when institutional investors are accumulating or distributing shares. Learning to interpret these patterns gives individual investors a tremendous edge. The most reliable pattern is the "cup with handle," resembling a coffee cup viewed from the side. This formation typically develops over 3-6 months, with the cup's depth ranging from 12% to about 33%. The handle-a small, final shakeout before the breakout-should form in the upper half of the base pattern and correct no more than 8-12% during bull markets. When a stock breaks through its pivot point from a proper base pattern, volume should increase at least 40-50% above normal-signaling institutional buying. Most investors (about 95%) fear buying at these new high prices, creating the market's "Great Paradox": what seems too high and risky usually goes higher, while what seems low and cheap often goes lower. Other important patterns include the double bottom (resembling the letter "W"), flat base (a sideways movement with minimal correction), and the rare but powerful high, tight flag (a 10-25% pullback after a 100-120% gain in 4-8 weeks). Each pattern has specific characteristics that signal potential for substantial gains when properly formed. What makes these patterns so valuable is their consistency across market history. The same formations that launched massive moves in stocks like Bethlehem Steel in 1915 or Xerox in 1960 continue to work for modern leaders like Apple, Google, and Tesla-because they reflect unchanging human emotions of fear and greed playing out in the market.

4. 第4章

   The Crucial Art of Market Timing

   Perhaps O'Neil's most valuable contribution is his systematic approach to market timing-determining whether you're in a bull or bear market. This isn't about predicting the future but recognizing current conditions through careful analysis of price and volume action in major market indexes. The key to identifying market tops is watching for "distribution days"-when major indexes close lower on heavier volume than the previous day. After four or five such days within a span of four to five weeks, the market almost always turns down. This pattern preceded every significant market decline for over a century, including the devastating crashes of 2000 and 2008. Similarly, market bottoms can be identified through "follow-through days"-when a major index posts a significant gain on heavier volume at least four days into a rally attempt. No new bull market in history has begun without this confirmation signal. O'Neil's timing system allowed his subscribers to preserve capital during major downturns. Approximately 60% of IBD readers sold stocks and raised cash in December 2007 or June 2008 before the serious market decline that followed. This preservation of capital is crucial since mathematics works against those who suffer large losses-a 33% decline requires a subsequent 50% gain just to break even. The myth that "you can't time the market" serves primarily to keep investors fully invested through devastating bear markets. While perfect timing is impossible, recognizing major trend changes through O'Neil's objective criteria can save investors from catastrophic losses and position them to capitalize on the powerful early stages of new bull markets.

   第5章

   Money Management: The Rules That Preserve and Build Capital

   Even the best stock selection system fails without proper money management rules. O'Neil's most emphatic rule is also the most difficult for most investors to follow: always cut losses at 7-8% below your purchase price, without exception. This discipline prevents small, manageable losses from becoming devastating ones. As Bernard Baruch noted, even being right only 3-4 times out of 10 can yield a fortune if you cut losses quickly. The mathematics are compelling-a 25% loss requires a 33% gain to break even, while a 50% loss requires a 100% gain. On the profit side, O'Neil recommends taking gains of 20-25% from most stocks, as his research shows that after rising this amount, stocks typically pull back to build new bases. The one exception: when a stock rises 20% within just 1-3 weeks of breakout (indicating exceptional strength), hold for at least eight weeks to capture potentially much larger gains. Contrary to conventional wisdom, O'Neil advises against wide diversification, which he calls "a substitute for knowledge." For investors with $20,000-$200,000, he suggests limiting holdings to 4-5 carefully chosen stocks. Even million-dollar portfolios rarely need more than 6-7 well-selected securities. The big money comes from concentration with sound buy/sell rules and realistic market understanding.

   第6章

   The Psychology of Successful Investing

   Perhaps the greatest challenge in investing isn't finding good stocks but managing your own psychology. O'Neil identifies twenty-one common mistakes investors make, with the most devastating being the refusal to cut losses quickly. This psychological barrier often stems from ego attachment and the mistaken belief that a falling stock must eventually recover. Human emotions make us reluctant to accept small losses, so we wait and hope until losses become devastating. The pain of accepting a 7-8% loss feels acute in the moment, but it pales in comparison to the potential 40-50% losses that can accumulate by holding onto declining positions. We also tend to buy declining stocks, mistaking them for bargains, and average down rather than averaging up-following losers with good money. This common trap, known as the "value trap," has destroyed countless portfolios when seemingly cheap stocks become even cheaper. Successful investors develop strict discipline to follow historically proven rules rather than emotions or impulses. They implement automatic stop-loss orders and pre-determined exit strategies before entering positions. These investors focus equally on buying and selling strategies, recognizing that the sell decision ultimately determines profitability. Many create detailed trading journals to track their emotional states and decision-making processes, helping them identify and correct psychological weaknesses. O'Neil emphasizes that intelligence and education don't guarantee market success. The 2008 financial crisis demonstrated how even brilliant, educated people in finance and government can make catastrophic mistakes. Notable examples include Long-Term Capital Management's collapse in 1998, where Nobel laureates and Wall Street veterans lost billions through overconfidence in their models. The market efficiently humbles excessive pride and overblown egos. The most successful investors often display paradoxical traits: they combine unwavering conviction in their strategy with the humility to admit mistakes quickly. They understand that market psychology moves in cycles of fear and greed, and they work to position themselves contrary to the crowd's emotional extremes. Regular meditation, maintaining a balanced lifestyle, and having interests outside of trading can help maintain the emotional equilibrium necessary for long-term success in the markets.

   第7章

   Learning from Market Masters

   The book includes detailed profiles of exceptional investors who've applied the CAN SLIM system with remarkable results. David Ryan, a standout example, won the U.S. Investing Championship three times between 1985 and 1990 using these principles. His success came from rigorous stock screening and maintaining detailed charts of potential winners. Ryan would typically review over 1,000 charts weekly to identify the best opportunities, demonstrating the level of dedication required. Jim Roppel's journey is particularly instructive, having transformed a modest account into tens of millions through disciplined application of the system. His most notable success came with Chinese search engine Baidu, where he accumulated a nearly $30 million gain by following the stock's uptrend and adding to his position as it continued higher. Roppel's success wasn't just luck - he studied historical market leaders and spent years perfecting his trading strategy before achieving these results. These market masters share several critical traits: they maintain strict discipline in both entry and exit points, follow the market's direction rather than fighting it, and focus exclusively on stocks with exceptional fundamentals breaking out from sound chart patterns. They're also unified in their approach to risk management, cutting losses quickly at 7-8% while letting winners run, often holding positions for months or even years when trends remain strong. Mike Webster, who manages portfolios for O'Neil, provided particular insight into O'Neil's trading psychology, observing that Bill "lives in the moment" as a trader. This manifests in his remarkable flexibility to change his mind about stocks when conditions change, even if it means reversing a position completely. Webster noted that O'Neil could be bullish on a stock one day and bearish the next if the technical or fundamental picture changed, showing no emotional attachment to his positions. This adaptability - being "like a tree bending in the wind" - separates great investors from those who stubbornly cling to opinions despite contrary market evidence. The most successful practitioners of CAN SLIM demonstrate this flexibility daily, remaining responsive to market conditions rather than trying to predict them. They understand that being right about a stock's direction is less important than being profitable, and they're willing to admit mistakes quickly to preserve capital for better opportunities. These investors also share a commitment to continuous learning, often studying past market cycles and maintaining detailed trading journals to refine their approach. They recognize that market conditions evolve, and successful strategies must adapt accordingly while maintaining the core principles of the CAN SLIM system.

   第8章

   The Path to Financial Independence

   O'Neil's approach isn't just about selecting stocks-it's about developing a comprehensive investment strategy that can weather all market conditions. He emphasizes that successful investing requires both defensive and offensive tactics, knowing when to be fully invested and when to raise cash. For those who prefer less active involvement, he offers detailed guidance on selecting growth-oriented mutual funds and ETFs that can compound wealth over decades, suggesting investors focus on funds with consistent 10-year track records and strong management teams. The power of compounding is demonstrated through several compelling examples. His calculation shows that $10,000 invested in a growth fund averaging 15% annually could grow to $1.28 million over 35 years. Adding regular contributions of $2,000 annually could potentially increase the total to over $3 million. He emphasizes that starting early is crucial - waiting just five years could reduce final returns by 40% or more. O'Neil provides specific examples of funds that have achieved these returns historically, while cautioning that past performance doesn't guarantee future results. For those willing to learn the CAN SLIM system, the rewards can be even greater. O'Neil shares detailed case studies, including how his PMD Fund, started with just $850 from Harvard classmates, grew to over $51,653 in 25 years-a nearly 50-fold after-tax gain. The account's meticulous transaction records reveal approximately 20 successful trades balanced by 20 losing ones, but with average profits of 20% versus average losses of just 7%. This demonstrates his key principle of cutting losses at 7-8% while letting winners run. He provides specific examples of both winning and losing trades, showing how proper position sizing and stop-loss discipline protected capital during drawdowns. O'Neil emphasizes that success requires more than just stock selection - it demands emotional discipline, proper money management, and a systematic approach to entering and exiting positions. He recommends starting with a small portion of capital while learning, gradually increasing position sizes as experience and success grow. The book includes detailed worksheets and templates for tracking trades, analyzing performance, and maintaining investing discipline through various market cycles.

   第9章

   Beyond Traditional Investment Wisdom

   O'Neil challenges numerous conventional investment beliefs through extensive historical analysis and real-world examples. His research particularly confronts the widespread reliance on P/E ratios as predictive indicators. He demonstrates that P/E ratios have little correlation with future stock performance-many of history's greatest winners had what seemed like "high" P/E ratios before their massive gains. Microsoft traded at 100 times earnings in the 1990s before multiplying several times over. Cisco Systems maintained P/E ratios above 50 during its strongest growth phase, while Home Depot traded at multiples that traditional value investors considered excessive during its most profitable years. Walmart similarly traded at premium valuations throughout its tremendous growth phase in the 1980s. The myth of dividend safety receives particular scrutiny in O'Neil's analysis. While conventional wisdom suggests dividend-paying stocks offer protection, history shows otherwise. Many investors lost 50% or more on "safe" dividend stocks like AT&T, Bank of America, and Citigroup during the 2008 financial crisis, despite their long dividend histories. General Electric, once considered the bluest of blue chips, saw its stock price collapse by over 80% in 2008-2009 despite its century-long dividend record. O'Neil advises against common speculative instruments that promise quick returns - penny stocks, futures, tax shelters, and most options trades. Instead, he advocates focusing on high-quality growth companies with proven earnings acceleration, strong sales growth, and industry leadership positions. Perhaps most importantly, O'Neil challenges the "buy and hold" approach that leaves investors fully invested through devastating bear markets. His research spanning multiple market cycles shows that approximately 75% of stocks that lead one bull market fail to lead the next one. For example, many leading tech stocks from the 1990s never recovered their former glory after the 2000 crash. Companies like Yahoo, Sun Microsystems, and Nokia dominated their eras but eventually faltered. This pattern makes it essential to sell declining former leaders and identify the new crop of innovators in each market cycle. O'Neil's data suggests that the ability to recognize when market conditions have fundamentally changed, combined with the willingness to sell and rotate into new leadership stocks, is crucial for long-term investment success. He emphasizes that protecting capital during major downturns is just as important as capturing upside during bull markets.

   第10章

   The Investor's Education: A Lifetime Journey

   O'Neil emphasizes that successful investing requires ongoing education and continuous learning. His newspaper, Investor's Business Daily (IBD), was created specifically to provide the detailed data and analysis individual investors need to apply the CAN SLIM system effectively. The publication serves as both a daily market guide and an educational resource, helping investors develop their analytical skills over time. The IBD 50 list, updated daily, represents the publication's selection of the market's strongest stocks based on fundamental and technical factors. This carefully curated list combines earnings growth, sales growth, profit margins, return on equity, and relative price strength to identify potential market leaders. The Stock Checkup tool provides detailed comparative analysis, measuring a stock's performance against its industry peers across 12 key metrics. The Market Pulse indicator offers clear signals about market direction through a combination of price and volume analysis of major indices and leading stocks. Beyond these core tools, IBD provides proprietary ratings that simplify complex analysis. The EPS Rating compares a company's earnings growth to all other public companies. The Relative Strength Rating measures a stock's price performance against the market over the past 12 months. The Accumulation/Distribution Rating tracks institutional buying and selling patterns, crucial for identifying professional support behind a stock. O'Neil stresses the importance of developing a consistent daily routine. This includes checking market direction first thing each morning, scanning for stocks with exceptional fundamentals, and maintaining a focused watch list of 20-25 potential buys. He recommends spending at least 30 minutes daily reviewing charts and reading about market leaders' business models and competitive advantages. Even during market corrections, this routine should continue uninterrupted. These periods often provide the best learning opportunities, as the next generation of market leaders typically forms their base patterns during downturns. O'Neil suggests using correction periods to study past winners' chart patterns, refine watch lists, and prepare for the next market uptrend. The education process extends beyond tools and routines to developing the right mindset. Successful investors must learn to control emotions, maintain discipline, and continuously adapt to changing market conditions. O'Neil advocates keeping a trading journal to document decisions and learn from both successes and failures, making the educational journey a systematic process of improvement.

   第11章

   The Path Forward: Discipline and Persistence

   O'Neil concludes with a message of optimism and personal responsibility, emphasizing that financial independence is within reach for those willing to commit to a disciplined approach. While acknowledging that market success doesn't happen overnight, he points to countless examples of ordinary investors who achieved extraordinary results by following systematic methods and maintaining unwavering dedication to their investment strategy. The path to successful investing requires three key commitments: consistent study of market patterns, emotional discipline during volatile periods, and the patience to wait for optimal entry points. O'Neil emphasizes that even during challenging economic times, opportunities emerge for those who remain vigilant and prepared. He cites historical examples, noting how some of the most successful companies, like Microsoft and Amazon, achieved their greatest growth during periods when many investors remained skeptical. Success in the stock market parallels success in other areas of life - it demands adherence to proven principles applied consistently over time. O'Neil's methodology centers on identifying companies displaying seven critical characteristics: strong earnings growth, market leadership, innovative products, increasing institutional ownership, healthy profit margins, supply-demand dynamics, and proper market timing. Each element requires careful analysis and patience to execute properly. The cyclical nature of markets creates recurring opportunities. O'Neil points to how each decade brings new sectors and companies that revolutionize industries: the 1980s saw the PC revolution, the 1990s brought internet pioneers, the 2000s introduced social media giants, and the 2020s are witnessing breakthroughs in artificial intelligence and clean energy. He emphasizes that investors who stay informed about emerging trends while maintaining disciplined trading rules are best positioned to capitalize on these opportunities. As O'Neil states: "The opportunities are there for anyone willing to put in the work. Each cycle is led by brand new inventions or entrepreneurial companies that are going to change the industries that they are in... somebody will always come along with a different and better way of doing things, and every new bull market will have a Google or an Apple." He reinforces this by noting that the most successful investors are often those who combine thorough research with emotional control and unwavering adherence to their trading rules, regardless of market conditions or external pressures.

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