Stop-Loss Discipline

Stop-loss discipline is the rule-based loss-control practice emphasized in EP76 穿越1940：我与股票大作手利弗莫尔的最后对话. The source treats stop-losses as a way to protect capital and psychological capacity when the market has not confirmed the trader’s thesis.

E153.股神的牌局：复利公式 + 凯利公式 adds a Kelly Criterion and Position Sizing angle: a trade is a probe, and if the market does not confirm the expected path, exiting protects the repeated-game ability to keep playing. The episode also argues that larger or added positions require stricter exits because the same mistake now has more capital behind it.

Key Claims

• A stop-loss is not only a price level; the episode also mentions time or behavior stops when a position fails to show expected strength after entry.
• Technical stops should be tied to meaningful trend or key-point failure rather than moved repeatedly because the trader hopes to be right.
• Trailing stops let a profitable trend run while still protecting much of the prior gain when trend evidence deteriorates.
• Stop-loss discipline is the practical opposite of Averaging Down in an active trade.
• The source warns that “再看一天” can become the emotional loophole through which a small loss becomes a career-ending loss.
• E153 adds that no-floating-profit trades should be reviewed quickly, while profitable trades can be held only while the trend or thesis remains intact.
• Stop-loss rules become more important after add-on buying because the correlated exposure has increased.

Connections

• Jesse Livermore — central teaching case for both good and failed stop-loss behavior.
• Trend Following — entry and holding framework that needs explicit exits.
• Pyramiding — adding to winners only works if losing trades are cut.
• Investment Risk Management and Market Regime Shift — broader risk frames reinforced by stop rules.
• Kelly Criterion and Position Sizing — E153’s reason exits matter for long-term survival.