📖 バリュー投資の教訓
ウォーレン・バフェットと、その師ベンジャミン・グレアムが残したコアな投資哲学を集めました。二人に共通する教訓は、短期の利益より 長期的な価値に焦点を当てることです。
📌 このページについて
このページは、メディアや書籍で公開された名言を教育目的でまとめたものです。特定の投資を推奨したり、将来のリターンを保証したりするものではありません。過去の教訓が将来も同じように当てはまる保証はなく、すべての投資判断はご自身の判断と責任で行う必要があります。
ウォーレン・バフェット
Warren Buffett1930~バークシャー・ハサウェイ会長
バリュー投資の生ける伝説。オマハの賢人として知られ、65年以上にわたりS&P 500を上回る複利リターンを達成してきました。
“Rule No. 1: Never lose money. Rule No. 2: Never forget Rule No. 1.”
💡 The core philosophy that preserving principal comes before chasing returns
“The stock market is a device for transferring money from the impatient to the patient.”
💡 Only long-term investors, not short-term speculators, win in the market
“Price is what you pay. Value is what you get.”
💡 Distinguishing price from value is the starting point of value investing
“Be fearful when others are greedy, and greedy when others are fearful.”
💡 The essence of contrarian investing: act against the crowd's emotions
“Our favorite holding period is forever.”
💡 An ultra-long-term philosophy: there's no reason to sell a great company
“It's far better to buy a wonderful company at a fair price than a fair company at a wonderful price.”
💡 The shift from mentor Graham's 'cheap stock' strategy to a 'great company' strategy (1989)
“Time is the friend of the wonderful business, the enemy of the mediocre.”
💡 A good business grows stronger as time passes
“Never invest in a business you cannot understand.”
💡 Invest only within your circle of competence
“The best investment you can make is in yourself.”
💡 Investment in your knowledge and skills can never be taken away
“Someone's sitting in the shade today because someone planted a tree a long time ago.”
💡 A metaphor for the power of compounding and the fruits of long-term investing
“I will tell you how to become rich. Close the doors. Be fearful when others are greedy. Be greedy when others are fearful.”
💡 From a lecture at Yale University (2008)
“Wide diversification is only required when investors do not understand what they are doing.”
💡 Concentrating on a few you understand beats diversifying across many you don't
ベンジャミン・グレアム
Benjamin Graham1894~1976バリュー投資の父 · バフェットの師
現代バリュー投資の創始者。『証券分析』(1934年)と『賢明なる投資家』(1949年)によって、投資を科学的な学問へと発展させました。ウォーレン・バフェットは彼を師と呼び、その著書を『わが人生で最高の本』と評しました。
“In the short run, the market is a voting machine, but in the long run, it is a weighing machine.”
💡 The difference between the short-term popularity vote (price) and long-term value weighing (earnings)
“The investor's chief problem—and even his worst enemy—is likely to be himself.”
💡 The insight that emotional decision-making is the greatest investment risk
“The intelligent investor is a realist who sells to optimists and buys from pessimists.”
💡 Contrarian investing grounded in facts, not emotion
“Buy not on optimism, but on arithmetic.”
💡 Make investment decisions with numbers and data, not emotion
“The margin of safety is always dependent on the price paid.”
💡 The core principle that even the best company is risky if bought too expensively
“An investment operation is one which, upon thorough analysis, promises safety of principal and an adequate return. Operations not meeting these requirements are speculative.”
💡 The clearest definition distinguishing investment from speculation
“The stock investor is neither right or wrong because others agreed or disagreed with him; he is right because his facts and analysis are right.”
💡 Independent analysis, not crowd psychology, is the standard for investing
“To achieve satisfactory investment results is easier than most people realize; to achieve superior results is harder than it looks.”
💡 Index funds can beat average, but excess returns are hard to achieve
“Mr. Market is your servant, not your guide.”
💡 Use market price swings as opportunities, but don't be ruled by them
両巨匠が共通して強調した原則
徹底した分析
感情ではなく、数字と事実に基づいて判断する
安全余裕を確保する
価格が価値を下回るときだけ買う
長期で保有する
短期の変動に振り回されず、辛抱強く待つ
自分を制する
最大の敵である欲と恐怖を克服する
能力の輪
自分が理解できるビジネスだけに投資する
危機を機会に変える
皆が恐れているときに勇敢であれ
📋 結果は過去のデータに基づくものです。過去のリターンは将来のリターンを保証しません。
📋 本サービスは投資アドバイスではなく、投資を理解するための教育目的で提供されています。