YZ Gap Fill FX (USDJPY・EURUSD Weekly Gap-Fill EA)
- Whole period
- 2 years
- 1 year
- 6 months
- 3 months
- 1 month
Forward testing (Profit)
Monthly Statistics
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Calendar for Months
About EA's Strategy
Translating...
■ What kind of EA is it
The “gap” that occurs when the opening price on Monday after the weekend deviates from the Friday close is filled in more than 80% of cases within the last 26 years. This EA is a single-function EA that only aims to fill this gap.
・Target are two pairs: USDJPY and EURUSD. It monitors both by loading them on a single chart
・Entry decision is only once right after the Monday open. Trades only in weeks where conditions align
・No black-box AI or complex filters
※Details of entry conditions and settlement rules are described in the included manual after purchase
■ Designed with risk management as the top priority
・Niseki, Martingale, and grid strategies are not used at all
・One position per pair. Entries occur once per pair per week
・All trades set a stop loss at order entry
・Holding period up to 24 hours. No carryover
・If spreads widen immediately after Monday open, entries are skipped
・Even if MT5 or PC restarts, it can restore state from open positions and history and continue (no double entries)
■ Backtest (Jan 2004–Jul 2026, 22.5 years, M5, initial margin 1,000,000 yen, fixed 0.10 lot)
USDJPY: Net profit +163,988 yen / PF 1.66 / 256 trades / win rate 76.2% / maximum drawdown 2%
EURUSD: Net profit +162,186 yen / PF 1.34 / 283 trades / win rate 68.9% / maximum drawdown 4%
■ Honestly, a few things to tell you
・The EA’s edge strongly depends on the spread environment. Performance on brokers with narrow spreads directly affects results, and real-world performance may deteriorate compared to backtests (the real spread at Monday open cannot be fully reproduced in the tester)
・Trading opportunities are about two per week in total for both pairs. Weeks with no trading are normal operation
・It is not a high-risk, explosive growth EA; it steadily builds a small edge
■ Operating environment and settings
・MT5 only / target symbols USDJPY and EURUSD / chart is one M5 chart for one pair
・If the broker’s symbol name has a suffix, you can adjust with one parameter change
・To operate at Monday open, constant operation is recommended via VPS or similar
・Recommended lot: 0.10 lots per 1,000,000 yen account balance
■ Frequently asked questions
Q. There was no trading this week
A. Normal. It trades only in weeks where a qualifying gap opens.
Q. Can I use it on the same account with other EAs
A. Yes. It manages only your positions using the magic number and symbol (supports both long and short positions).
Q. Can I operate with only one of the pairs
A. Yes. You can choose the target pair with a parameter.
Q. Can it be used for Gold
A. This product is dedicated to FX Monday-open gaps. There is a sister product “YZ Gap Fill Gold” that targets daily gaps for gold.
Price: $158.67 (taxed)
￥25,000(taxed)
●Payment
Sales from : 10/29/2026 02:45
Price: $158.67 (taxed)
￥25,000(taxed)
●Payment
Just like discretionary trading, there are those that decide trading and settlement timings by combining indicators, those that repeatedly buy or sell at certain price (pips) intervals, and trading methods that utilize market anomalies or temporal features. The variety is as rich as the methods in discretionary trading.
To categorize simply,
・Scalping (Type where trades are completed within a few minutes to a few hours),
・Day Trading (Type where trades are completed within several hours to about a day),
・Swing Trading (Type where trades are conducted over a relatively long period of about 1 day to 1 week)
・Grid/Martingale Trading (Holding multiple positions at equal or unequal intervals and settling all once a profit is made. Those that gradually increase the lot number are called Martingale.)
・Anomaly EA (Mid-price trading, early morning scalping)
However, a substantial advantage of automated trading is its ability to limit and predict risks beforehand.
[Risk]
Inherent to forex trading are the trading risks that undeniably exist in automated trading as well.
・Lot Size Risk
Increasing the lot size forcibly due to a high winning rate can, in rare instances, depending on the EA, lead to substantial Pips loss when a loss occurs. It is crucial to verify the SL Pips and the number of positions held before operating with an appropriate lot.
・Rapid Market Fluctuation Risk
There are instances where market prices fluctuate rapidly due to index announcements or unforeseen news. System trading does not account for such unpredictable market movements, rendering it incapable of making decisions on whether to settle in advance or abstain from trading. As a countermeasure, utilizing tools that halt the EA based on indicator announcements or the VIX (fear index) is also possible.
[Benefits]
・Operates 24 hours a day
If there is an opportunity, system trading will execute trades on your behalf consistently. It proves to be an extremely convenient tool for those unable to allocate time to trading.
・Trades dispassionately without being swayed by emotions
There is an absence of self-serving rule modifications, a common human tendency, such as increasing the lot size after consecutive losses in discretionary trading or, conversely, hastily securing profits with minimal gains.
・Accessible for beginners
To engage in Forex trading, there is no prerequisite to study; anyone using system trading will achieve the same results.
[Disadvantages]
・Cannot increase trading frequency at will
Since system trading operates based on pre-programmed conditions, depending on the type of EA, it might only execute trades a few times a month.
・Suitability may vary with market conditions
Depending on the trading type of the EA, there are periods more suited to trend trading and periods more suited to contrarian trading, making consistent results across all periods unlikely. While the previous year might have yielded good results, this year's performance might not be as promising, necessitating some level of discretion in determining whether it is an opportune time to operate.
・MT4 (MetaTrader 4. An account needs to be opened with a Forex company that offers MT4.)
・EA (A program for automated trading)
・The operating deposit required to run the EA
・A PC that can run 24 hours or a VPS (Virtual Private Server), where a virtual PC is hosted on a cloud server to run MT4.
Additionally, there are both demo and real accounts available. You can experience trading with virtual money by applying for a demo account. After opening a real account, you select the connection server assigned by the Forex broker, enter the password, and log in to the account.
When you deposit money into your account using the method specified by the forex broker, the funds will be reflected in your MT4 account, and you can trade.
Firstly, download the purchased EA file from your My Page on GogoJungle. You will download a zip (compressed) file, so right-click to extract it and retrieve the file named ‘◯◯◯ (EA name)_A19GAw09 (any 8 alphanumeric characters).ex4’ from inside.
Next, launch MT4 and navigate to ‘File’ → ‘Open Data Folder’ → ‘MQL4’ → ‘Experts’ folder, and place the ex4 file inside. Once done, close MT4 and restart it. Then, go to the upper menu ‘Tools’ → ‘Options’, and under ‘Expert Advisors’, ensure ‘Allow automated trading’ and ‘Allow DLL imports’ are checked, then press OK to close.
The necessary currency pair and time frame for the correct operation of the EA are specified on the EA sales page. Refer to this information and open the chart of the correct currency pair time frame (e.g., USDJPY5M for a USD/Yen 5-minute chart).
Within the menu navigator, under ‘Expert Advisors’, you will find the EA file name you placed earlier. Click to select it, then drag & drop it directly onto the chart to load the EA. Alternatively, you can double-click the EA name to load it onto the selected chart.
If ‘Authentication Success’ appears in the upper left of the chart, the authentication has been successful. To operate the EA, you need to keep your PC running 24 hours. Therefore, either disable the automatic sleep function or host MT4 on a VPS and operate the EA.
If you want to use it with an account other than the authenticated one, you need to reset the registered account.
To reset the account, close the MT4 where the Web authentication is registered, then go to My Page on GogoJungle > Use > Digital Contents > the relevant EA > press the ‘Reset’ button for the registration number, and the registered account will be released.
When the account is in a reset state, using the EA with another MT4 account will register a new account.
Also, you can reset the account an unlimited number of times.
→ Items to Check When EA is Not Operating
1 lot = 100,000 currency units
0.1 lot = 10,000 currency units
0.01 lot = 1,000 currency units
For USD/JPY, 1 lot would mean holding 100,000 dollars.
The margin required to hold lots is determined by the leverage set by the Forex broker.
If the leverage is 25 times, the margin required to hold 10,000 currency units of USD/JPY would be:
10000*109 (※ at a rate of 109 yen per dollar) ÷ 25 = 43,600 yen.
・Risk-Return Ratio: Total Profit and Loss during the period ÷ Maximum Drawdown
・Maximum Drawdown: The largest unrealized loss during the operation period
・Maximum Position Number: This is the maximum number of positions that the EA can theoretically hold at the same time
・TP (Take Profit): The set profit-taking Pips (or specified amount, etc.) in the EA's settings
・SL (Stop Loss): The set maximum loss pips (or specified amount, etc.) in the EA's settings
・Trailing Stop: Instead of settling at a specified Pips, once a certain profit is made, the settlement SL is raised at a certain interval (towards the profit), maximizing the profit. It is a method of settlement.
・Risk-Reward Ratio (Payoff Ratio): Average Profit ÷ Average Loss
・Hedging: Holding both buy and sell positions simultaneously (Some FX companies also have types where hedging is not allowed)
・MT4 Beginner's Guide
・Understanding System Trading Performance (Forward and Backtesting)
・Choosing Your First EA! Calculating Recommended Margin for EAs
・Comparing MT4 Accounts Based on Spread, Swap, and Execution Speed
・What is Web Authentication?
・Checklist for When Your EA Isn't Working