The Real Face of “An EA Without Stop Loss Is Scary” — 3 Numbers for Safer Involvement
“Don’t buy an EA without stop loss because it’s dangerous.” This is a common view. Half of it is correct, half is a bit sloppy. The essence of the issue isnot whether there is a stop loss or not, but whether you understand risks in numbers and align your capital accordingly. This time, when dealing with an EA that doesn’t use stop loss, I will整理 three numbers you should at least grasp.Three numbersto pay attention to.
Here, an EA without stop loss is mostlyaveraging down in a grid recovery logic. If it goes against you, it buys at fixed intervals to lower the average entry price, offsets losing positions with winning ones upon rebound, or takes profit in a basket of positions with overall unrealized profit.“Settling losses one by one” is replaced by “recovering multiple positions at once”as the method for taking profits.
It’s true that win rate is high and there are many days that end with unrealized gains. However, the weaknesses are clear.In markets that move in one direction (trends continuing or sharp reversals), unrealized losses pile up without being closed. This is what makes it “scary” and a structural risk that cannot be avoided. Therefore, it is essential to measure with numbers, not emotions.
Ads claiming “Total profit XX万円” or “Win rate XX%” are not very reliable. With no-stop-loss EAs, the three numbers you should truly watch are the following three.
① Maximum Drawdown (%)：How much you could have sunk relative to your funds. This percentage hardly changes whether you raise or lower lot size (the actual amount moves proportionally). It reflects the EA’s volatility.
② Worst unrealized loss (amount)：The deepest unrealized loss during the testing period. This becomes thefoundation for recommended capital. It is crucial to look at the worst case, not the average.
③ Stress tolerance：Based not only on historical data, but“what if a one-way sharp change comes”, tested artificially. For example, by pushing the market price strongly in one direction to see whether the account survives and how deep it sinks. This is the lifeline of no-stop-loss EAs.
The recommended capital for a no-stop-loss EA is determined not from expected return but fromreverse-calculating from the worst unrealized loss. I often use“Worst unrealized loss × 2”as a guideline. If the worst is 100,000 yen, prepare at least 200,000 yen.
And when you want to increase profits, don’t force change the logic;increase lot size and capital proportionally. Since the drawdown percentage stays the same, you can scale up without changing the risk profile. Conversely,increasing lot size while funds are insufficientis the most dangerous mistake.
① Run with the minimum recommended capital. The worst can exceed expectations. Without room to maneuver, you’ll falter just before recovery.
② Increase the maximum number of positions. The number of positions directly scales risk. The more you open, the deeper into unrealized losses you go, approaching collapse.
③ Narrow the nampin (averaging down) range. Narrower intervals mean more positions faster, increasing the speed at which unrealized losses grow.
④ Cut unrealized losses by hand. EA is designed to wait for recovery; panic-selling partway closes positions before recovery, locking in losses.This is the most common “accident”.
Recovery grids are EA that survive by waiting. If you rely on willpower for “waiting,” you’ll likely break. Thereforebuild a state where you can wait with system: capital buffers, upper limit on number of positions, and keeping automated trading on. If you can do this, no-stop-loss EAs become a viable option, not just something scary.
For the sake of caution. No-stop-loss EAs cannot be safeguarded from bankruptcy risk even with ample funds and strict rules. Sudden changes beyond tests can occur.This article does not endorse any particular product and is intended to organize risk perspectives. Investment decisions are your own responsibility.
- The issue is not “whether there is a stop loss” but“whether risks are understood numerically and capital is aligned”
- What to watch for is① Maximum drawdown % ② Worst unrealized loss (amount) ③ Stress tolerance
- Recommended capital =Worst unrealized loss × safety factor (2x is a guideline)／Increase by raising lot size and capital proportionally
- NGs＝Run with minimal funds / Increase number of positions / Narrow averaging down /Cut unrealized losses by hand
※This article is for informational purposes and does not aim to solicit investments. The reported results are past performance and do not guarantee future profits. FX/CFD trading involves risk. Please make investment decisions at your own responsibility.