Trader A enters a position risking 2% of a $50,000 account — $1,000. The trade moves against them. At -3R they're down $3,000. At -5R, $5,000 gone. They tell themselves it will recover. By -10R they've lost $10,000 — 20% of their account — on a single trade that should have been closed at $1,000.
This is the defining error Market Wizards identifies repeatedly. Paul Tudor Jones, Ed Seykota, and others built careers on one principle: limit losses ruthlessly and let winners run. The asymmetry is brutal maths — a 20% drawdown requires a 25% gain to recover. A 50% drawdown requires 100%.
The mechanics matter. A stop-loss placed at 1R below entry on a $50,000 account risking 1% per trade means a $500 maximum loss per position. If the trade thesis is invalidated — price breaks structure, volatility expands beyond model parameters, or a catalyst disappears — the position closes. No deliberation. The rule fires.
Three specific triggers traders use to exit early: first, price invalidates the technical level that justified the entry — the setup no longer exists. Second, the position reaches a pre-set maximum loss threshold, typically 1R to 2R. Third, time-based exits apply when a trade fails to move within an expected window, indicating the catalyst has not materialised. Resources like stop-loss orders on Investopedia, the principles behind risk management on Wikipedia, and Investopedia's breakdown of drawdown mechanics provide solid grounding for building these frameworks systematically.
The position you hold past your stop is no longer a trade — it is a hope. Hope has no place in a rules-based system.
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