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9.2 Maximum Drawdown (Static vs Trailing)
While the Daily Drawdown protects the firm from a trader having one exceptionally bad day, the Maximum Drawdown rule protects the firm from a trader slowly bleeding out the account over weeks or months. The industry standard Maximum Drawdown is 10%.
Just like the daily rule, the devil is in the mathematics. Prop firms use two entirely different methods to calculate your max limit: Static Drawdown and Trailing Drawdown. If you do not understand the difference, you will lose a funded account while being entirely in profit.
The Traditional: Static Drawdown
A Static Drawdown is fixed to your initial starting balance. If you buy a $100,000 account with a 10% Static Drawdown, your absolute fail limit is permanently locked at $90,000. It never moves.
If you make $5,000 in profit (Balance is now $105,000), your fail limit is STILL $90,000. This means you now effectively have a $15,000 'lifeline' (15%) before you lose the account. This is the fairest and most trader-friendly model.
The Trap: Trailing Drawdown (High-Water Mark)
Many strict firms use a Trailing Drawdown based on the 'High-Water Mark'. This means the 10% fail limit follows your account balance upwards as you make profit.
If you start at $100k, your 10% fail limit is $90k. You have a great week and make $8,000 in profit. Your balance is now $108,000. Because it is a Trailing Drawdown, your fail limit trails right behind you! Your new 10% fail limit is now $98,000 (10% below your new high).
Why Trailing Drawdowns Are Lethal
In the example above, your fail limit trailed up to $98k. If the market pulls back and you lose a few trades, dropping your balance from $108k down to $97k, you will lose the account! Even though your balance is $97k (which means you are technically $3,000 in pure profit from the $100k start), you hit the trailing limit.
Trailing drawdowns usually lock in place once your trailing limit hits your starting balance ($100k). However, many Prop Firms hide this rule deep in their Terms and Conditions. Always verify if a firm uses 'Static' or 'Trailing' drawdown before purchasing an evaluation.
Self-Evaluation Check
1. What is the primary difference between a Static Maximum Drawdown and a Trailing Maximum Drawdown?
2. On a $100,000 account with a 10% Trailing Drawdown, you make $8,000 in profit. Your balance is $108,000. What is your new fail limit?
3. Why is it mathematically possible to lose a Trailing Drawdown account while your overall balance is still in profit?
4. When does a Trailing Drawdown usually stop trailing?
5. Which drawdown model is significantly more trader-friendly and highly recommended for swing traders?