These are 3 Investment Psychology principles distilled from Duan Yongping's writing and public remarks. Use them as a decision checkpoint: translate each rule into a yes/no test, write what evidence would change your mind, and set a review date before you act. When a rule feels vague, open the full principle page and capture the driver you can verify (cash flows, leverage, incentives, competitive edge). This is educational, not investment advice—double-check primary sources and fit every rule to your time horizon, risk budget, and constraints.
"Don't follow stock prices daily. Don't read too much news. Most market information is noise, not signal. Focus on what matters: the business fundamentals."
Do not watch stock prices daily; most market information is noise, not signal.
Read Full Analysis →"The greatest enemy of the investor is himself. Fear, greed, regret, and pride cause more losses than any economic event. Master your emotions to master the market."
Master your emotions to master the market.
Read Full Analysis →"Know the common behavioral biases that trap investors: anchoring, confirmation bias, loss aversion, and herding. Awareness is the first step to prevention."
Know your behavioral biases to avoid them.
Read Full Analysis →Use this page as a workflow, not a collection of quotes. Pick 3–5 principles, translate each into a concrete check, and review your decisions on a fixed cadence. These are educational guardrails—always verify facts and match them to your own constraints.
Rehearse a scenario decision → ·Run a weekly toolkit → ·Browse all principles →
Duan's investment philosophy closely mirrors Buffett's value investing principles. He focuses on buying great businesses at reasonable prices and holding them for the long term.
Duan Yongping has 3 key principles on investment psychology. The most important one is "Ignore the Noise" — Don't follow stock prices daily.
Duan Yongping applies investment psychology through several key principles including "Ignore the Noise" and "Master Your Emotions". These principles guide practical investment decisions and have been tested across decades of market cycles.
Duan Yongping's approach to investment psychology is distinguished by a focus on long-term thinking and fundamental analysis. With 3 specific principles in this area, Duan Yongping provides a comprehensive framework that investors at any level can study and apply to improve their decision-making.
Treat each principle as a hypothesis. Write the evidence you would need, collect it from primary sources when possible (filings, letters, transcripts), and note what would invalidate the conclusion. If you can’t define inputs and triggers, you’re not applying the rule—you’re quoting it.
Pick a cadence you can sustain (weekly or monthly) and review process signals first: whether you followed your checklist, respected your boundaries, and documented assumptions. Only then look at outcomes. The goal is fewer low-quality decisions, not perfect prediction.
