🔽 Important: Lot explanation

◆ Lots (initial lot) =0.03: recommended (× up to 17 positions of averaging)

Larger lot sizes mean
high risk, high return, while
smaller sizes meanlow risk, low return.

0.03 is a setting that achieved the best efficiency within the initial 1,000,000 yen capital and max 25x leverage, with max DD under 1,000,000 yen.

(1 lot = 100,000 currency units; in this backtest, 0.03 corresponds to 3,000 units)

3,000 currency units may seem small relative to 1,000,000 yen, but BlackDragon uses grid averaging, so the initial position must be smaller.

Grid EA increases positions after price moves against you.

BlackDragon uses basket settlement to realize overall profitability.



Thus initial entry positions cannot be too large.

The number of positions is limited to 17 for risk management.

BlackDragon employs a fixed add-on lot logic: with each extra position, the initial lot increases. For example, if initial lot is 0.01, then 0.02, 0.03, 0.04, 0.05, etc.

If initial lot is 0.02, then 0.04, 0.06, 0.08, 0.10, etc.

(not the same as martingale that doubles per entry)

The reason for saying “基本的には” (essentially) is that if the rate moves sharply, entries at the expected levels may be skipped, such as 0.01, 0.03 instead of 0.02, if the rate jumps.



(If you’re curious, review the past 17 years of backtests for conditions and holdings)

Therefore, with a maximum of 17 positions and no rate jumps, if initial lot is 0.01, it would be 0.01+0.02+0.03...=1.53 lots; if rate jumps, it can be larger.

If initial lot is 0.02, it would be 0.02+0.04+0.06...=3.06 lots, and could be even larger with rate jumps.

If you start with 1,000,000 yen and use initial lot above 0.03, there is a risk of margin shortage before reaching the planned 17 positions depending on market direction.

Also, the value of 1 lot depends on your FX broker, so please confirm.

Generally, 1 lot is 1,000, 10,000, or 100,000 units; even with the same broker, lot size per contract varies by service tier, so please confirm.


(How to check: MT4 screen -> right-click on quotes -> “Contract size” in Specifications — 100,000 means 1 lot of 100,000 units; 10,000 means 1 lot of 10,000 units)

Backtest lot setting is an example assuming a 1,000,000 yen account.

Risk varies with broker and lot size per contract, so always adjust to your environment.

Case ②
■ Initial capital 1,000,000 yen / max leverage 25x
Initial 0.04 lots: default (17 positions max total 6.12 lots or more)

• Net profit: 10,089,586 yen

• Maximum drawdown: 1,079,728 yen

• Approximately 17 years, capital about 11x

The initial lot of this EA, BlackDragon, is 0.04 by default.
Of course you can freely change the lot size.

Backtest results show the maximum drawdown exceeding the initial 1,000,000 yen in about 17 years.

This indicates that starting with 0.04 could lead to ruin if drawdown occurs similarly; however, higher lots also mean higher profits, so as the initial capital grows due to profits, the risk of ruin decreases.

That’s why in this backtest, although there is a maximum drawdown of over 1,000,000 yen, the capital increased significantly, ending at 11x from 1,000,000 yen to 11,080,000 yen.

Also, as noted, the maximum drawdown is 1,079,728 yen, but the drawdown percentage is only 10.43%, so considering net profit and risk, the default 0.04 lot was chosen.

(For more conservative operation, 0.03 initial lot is recommended. With 0.03, max drawdown stays under 1,000,000 yen, enabling safer operation.)

When looking at the backtest figures, people decide what level of risk is acceptable,
and it varies by individual and capital,
and since this is an investment, there is no single safe numeric value.


Some may decide the default 0.04 is too risky and lower the lot,

while others start with larger lots.

Starting capital varies by person, and lots are not fixed at 0.04, so please adjust freely.

In FX, some see risk as “minimize risk and grow steadily long-term,”

while others see FX as “a high-leverage gamble that can change your life.”

There is no right answer, so please use these cases for comparison and judgment.

Case③
■ Initial capital 1,000,000 yen / max leverage 25x
Initial 0.05 lots: high risk, high return

• Net profit: 12,607,409 yen

• Maximum drawdown: 1,350,340 yen

• Approximately 17 years, capital about 13x

Of course, as initial lot increases to 0.03, 0.04, 0.05, there is high risk and high return.


Comparing exact profits and drawdowns shows both increasing.

Case④
■ Initial capital 1,000,000 yen / max leverage 25x
Initial 0.26 lots (not recommended): unreproducible super-high risk-high return

• Net profit: 53,634,650 yen

• Maximum drawdown: 7,198,296 yen

• Approximately 17 years, capital about 54x

Starting with 0.26 lots yielded 54x gain over 17 years, but drawdown exceeded 7x the initial capital.

This was a coincidental outcome where the period didn’t bankrupt, not a reproducible result.


Even a small mis-timing could bankrupt, so smaller lots yield lower risk,

but larger lots offer higher potential returns; this serves as a reference for understanding.


Next, Case⑤ starts at 0.27 lots with an additional 0.01, showing immediate bankruptcy.

📊 Lot size and risk

Lowering the lot reduces profits but also reduces maximum drawdown, enabling risk-controlled operation.

This EA assumes 1,000,000 yen start; the recommended is 0.03 lots (3,000 currency units) for a 1,000,000 yen account, but depending on broker and course selection, the minimum lot may be 1,000 units or even 1 unit in some cases.

Please adjust lot sizing to suit your funds and risk tolerance.

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🔽 Frequently Asked Questions (Q&A)

Q. Entries are not occurring
A. Because of zone control, if conditions are not met, no trades are made.
Also, spread or position count limits may prevent entries.
(Example: permissible spread set to 4.0 pips, but spread widens to 4.7 pips early morning and no entry occurred. You can change the permissible spread.)

Q. It somehow settled all positions automatically
A. Basket settlement closes all positions when total profit exceeds a threshold.

Also, when the safety feature triggers beyond the estimated range, all positions are closed. By default, 100 pips is the close threshold (modifiable or OFF).

Q. What time frame should I use?
A. The internal logic uses a 5-minute basis; using M5 is recommended.
However, the internal monitoring is done on 5-minute intervals regardless of the chart you view, so entry/exit movements do not change.

Q. Can a beginner use it?
A. The design is simple, with few settings, so it should operate without issue.

Nevertheless, capital progression depends on lot management, so starting with a demo is recommended.



Also refer to the five backtest scenarios and the detailed backtest results for initial 0.04 lots.

This helps visualize how positions accumulate during a retrace and how funds move with basket settlement.

In conclusion

Thank you for reading.

BlackDragon is not an EA aimed at “one-shot big profits.”

Instead, it prioritizes continuity and protecting funds while growing them.

If you are

・tired of discretionary trading
・Want to escape emotional trading
・Want to steadily grow your funds over time

then this EA should be helpful.

Start small or in a demo environment first.
Please verify its behavior in your setup.

May your trading become easier and more stable.

⚠️ Disclaimer
This tool does not guarantee future profits.
Results vary with market conditions and broker environment.
Final investment decisions and risk management are your responsibility.