"The ancient skillful warriors first made themselves invincible, and then waited for the enemy's vulnerability." — Sun Tzu (《孙子兵法·形篇》)
Sun Tzu Principle of Invincibility (先为不可胜): Defense is under your 100% control; profit is determined by market opportunity. Calculate your position size strictly based on maximum risk tolerance before entering any trade.
STEP 1 Defensive Trade Inputs
Recommended: 1.0% (Institutional standard).
Set at structural support or pivot low.
Set at major resistance or 52-week target.
STEP 2 Sun Tzu Risk & Sizing Output
Max Share Quantity
133
Shares
Total Position Value
$19,950
19.95% of Equity
Max Dollar Risk ($)
$997.50
1.00% of Equity
Reward-to-Risk Ratio
4.0 : 1
Expected Value (EV)
Sun Tzu Invincibility Grade
A+ (Invincible)
Trade complies 100% with Sun Tzu Invincibility & Asymmetric Risk rules.