📖Paul Tudor Jones
Know Your Limits
Stay within your circle of competence.
The most successful investors stay within their circle of competence. Know what you understand well and resist the temptation to venture outside it.
🏠 Everyday Analogy
📖 Core Interpretation
Paul Tudor Jones advocates a repeatable process: define criteria, execute consistently, and review decisions against evidence. Process quality drives outcome consistency.
💎 Key Insight：Self-awareness about knowledge limits prevents costly mistakes.
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❓ Why It Matters
Without process, there is no reliable feedback loop. Structured execution and review improve decision quality over time.
🎯 How to Practice
Run a decision loop of research, thesis, execution, and post-mortem; document assumptions and update playbooks with evidence, not hindsight bias.
⚠️ Common Pitfalls
Having opinions without execution criteria
Reviewing outcomes but not decisions
Abandoning rules during volatility spikes
📚 Case Studies
1
Black Monday Crash Hedging (1987)
Before the October 1987 crash, Jones anticipated growing instability and heavily used futures and options to hedge equity exposure, positioning his fund defensively against a potential market collapse.
✨ Outcome：His fund reportedly gained over 60% in 1987 while markets plunged, exemplifying capital preservation under extreme stress.
2
Dot-Com Bubble Caution (2000)
During the late 1990s tech boom, Jones remained skeptical of high-flying, unprofitable internet stocks and reduced exposure, emphasizing risk management and tight stops as valuations became extreme.
✨ Outcome：Avoided major drawdowns when the bubble burst in 2000–2002, preserving capital for future opportunities.
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