"Drawdown is already at 30%. Should I stop?"
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If you are asking this question, you are already under serious pressure. Today I will skip the fluff and give you a red-line method you can put into action right away.
Step 1: First calculate the "baseline" - how much drawdown the strategy can theoretically handle
[What to do]: Use historical data to set a benchmark that tells you "under normal conditions, this is the worst the strategy gets."
[How to do it]: Find the largest historical drawdown in your strategy's backtest or live trading record. For example, say it is 20%.
[Completion standard]: You get a base number, such as 20%.
The common method is to directly use the historical maximum drawdown as the baseline. If live drawdown exceeds this number, it means the market environment or the strategy itself has developed problems that did not appear in the backtest.
Common failure reason: Directly using the backtest maximum drawdown as the live stop line. Backtesting is an ideal environment. Live trading has slippage, delays, and emotional interference, so actual drawdown is usually larger than backtest drawdown. The baseline needs to be discounted. For example, if the backtest maximum drawdown is 20%, set the live red line at 12-15% first.
Step 2: Set hard thresholds using a "three-layer protection" structure
[What to do]: Split your risk control into three levels: per trade, per day, and per month.
[How to do it]: Based on a real trader's experience, he split risk control into three layers:
Maximum loss per trade: no more than 1.5% of total account funds.
Maximum loss per day: if it reaches 4% of total account funds, stop trading for the day immediately.
Maximum loss per month: if it reaches 10%, cut position size in half; if it reaches 15%, stop trading for the rest of the month.
Risk reminder: Once you set a per-trade stop loss, place the stop order at the same time you enter the trade. Entering without a stop order is like running naked. Many people set an 8% stop loss, but when price actually hits it, they cannot bring themselves to cut the position, and eventually it becomes 20% or 30%. So the key is not what number you set, but whether you can execute it after placing the order.
[Completion standard]: You have a piece of paper with three numbers written on it, taped next to your screen.
Step 3: Adjust the specific numbers based on how the account feels
[What to do]: Convert the reference percentages above into specific amounts for your account and see whether you can accept them.
[How to do it]:
Case A (smaller account): For example, with 1,000 USDT, 1.5% per trade is 15 USDT. That number may be too small to be meaningful in execution, so you can loosen it to 2-3%, but your mental tolerance must keep up accordingly.
Case B (larger account): For example, with 100,000 USDT, 1.5% per trade is 1,500 USDT. Losing that amount may hurt but you can still stay calm, so the number is reasonable.
Industry experience reference: A trader with three years of live trading set the maximum daily loss at 4%. After that, the frequency of "blowing up in one day" dropped from three or four times a month to once every six months. You can verify this effect yourself.
Step 4: The drawdown threshold should not be too small
[What to do]: Leave room for the strategy's "normal bumps."
[How to do it]: Do not set the drawdown red line too tight. The market has normal fluctuations. If the drawdown threshold is too small, you will get shaken out during normal trend moves.
Test data reference: Calculations on the CSI 300 index show that when the maximum drawdown threshold is set around 10%, investors can capture the maximum return from this method of taking profit. Crypto markets are more volatile, so this number should be enlarged accordingly.
Risk reminder: If the threshold is set too large, you also take on higher risk. When the market keeps falling, returns continue to decline and losses increase. So the threshold needs to find a balance between "not getting shaken out" and "not losing too much."
FAQ
Q: If drawdown triggers the stop line and the strategy liquidates positions, when should I re-enter?A: One approach is: after the triggering move ends, wait until the next rebalancing cycle to re-enter. For example, if you adjust positions monthly, after the stop is triggered you do not trade for the rest of that month, and on the 1st of the next month you re-evaluate whether to resume.
Q: At what maximum drawdown should I stop? Is there an absolute number?A: There is no universally correct number. Use the three-layer framework from Step 2 above, combined with your own capital size and mental tolerance. If the drawdown keeps you up at night, then it is too high. Lower it.
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Next action
Today, take a piece of paper and write down three numbers:
Maximum loss per trade (suggested 1-2%)
Maximum loss per day (suggested 3-5%)
Maximum loss per month (suggested 10-15%)
Then the next time you open a position, place the stop order at the same time you enter. Execute this for one month, then look back at your account's "maximum drawdown" and "worst day." You will know whether the numbers you set are appropriate.
