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Atsushi Katayama / Profil

Atsushi Katayama
Atsushi Katayama
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14
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5
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1
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https://atsushikforexlab.substack.com/
I develop and test MetaTrader 5 Expert Advisors with a focus on backtesting, forward testing, and risk management.

My products do not rely on martingale, grid, or averaging strategies.

Backtest results are historical test results only and do not guarantee future profits. Please test any EA in the Strategy Tester and on a demo account before live trading.
Arkadaşlar 1
Atsushi Katayama
トレーディングシステム

Why I Built a Gold EA with Breakout, Mean Reversion and Momentum Logic — Developer Note

12 Ekim 2026, 00:33
Gold does not move in only one way. Sometimes XAUUSD leaves a range and continues with force. Sometimes it stretches too far, loses energy and returns toward a recent balance area...
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Atsushi Katayama ürün yayınladı
NINJA Trend Matrix MT5 Pro

30.00 USD

NINJA Trend Matrix MT5 Pro NINJA Trend Matrix MT5 Pro, çoklu zaman dilimi piyasa panelini kapanmış mumlara dayalı grafik analiz olaylarıyla birleştirir. EMA20/50 çizgilerini ve üç seçilebilir modu gösterir: EMA kesişimi, EMA geri çekilmesi ve önceki on kapanmış mumun aralığının kırılması. ADX filtresi, analitik oklar ve sanal çıkış işaretleri içerir. Bu işaretler gerçek emir, pozisyon veya işlem sonucu değildir. Gösterge emir açmaz, değiştirmez veya kapatmaz; kâr garantisi vermez. Demo hesapta

Atsushi Katayama ürün yayınladı
MTF Open Line Pro MT5

30.00 USD

MTF OPEN LINE PRO MT5 GENEL BAKIŞ MTF Open Line Pro MT5, farklı zaman dilimlerindeki referans açılışlarını ve kapanmış mumlarla onaylanan kurulum olaylarını tek grafikte düzenleyen, salt okunur bir MetaTrader 5 göstergesidir. Panel, giriş adları ve mesajlar İngilizcedir. SEVİYELER VE PROFİLLER Scalping M5, Day M15, Day H1 ve Custom profilleri kullanılabilir. Sekiz adede kadar slot; mevcut dönem açılışı, önceki dönem açılışı, yıl açılışı, broker seans açılışları, özel tarih ve saat çapası ile

Atsushi Katayama
トレーディングストラテジー

Revenge Trading: The Five-Minute Reset Before Your Next Trade

15 Eylül 2026, 09:43
The most dangerous trade is often the one placed immediately after a loss. The Stop Loss is hit. You keep watching the chart. Price starts moving back...
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Atsushi Katayama
トレーディングストラテジー

You Moved the Stop. The Trade Changed. | Risk Lab 03

14 Eylül 2026, 11:06
You moved the Stop. The position may look the same, but the trade is no longer the same. The Entry is unchanged. The ticket is unchanged. The chart still shows the same position...
130
Atsushi Katayama
トレーディングストラテジー

One Percent Risk Is Not a Lot Size: How to Calculate Position Size in MT5

12 Eylül 2026, 05:04
One percent risk is not a lot size. It does not mean 0.01 lot, one mini lot, one percent of the required margin, or a position whose notional value equals one percent of the account...
110
Atsushi Katayama
統計

A 60% Win Rate Can Still Lose Money: Expectancy, Streaks and Position Size

10 Eylül 2026, 05:36
A high win rate can feel reassuring. It can also hide a losing payoff structure. A strategy can win 60% of its trades and still lose money...
91
Atsushi Katayama
トレーディングシステム

How to Review Confirmed USDJPY Candidates Across Changing Market Regimes | YENFORGE v1.10

8 Eylül 2026, 12:52
When you trade USDJPY manually, the difficult part is not simply finding more arrows...
45
Atsushi Katayama
トレーディングシステム

Gold Moves Fast. Wait for the Bar to Close. | Goldforge Gold Signals

7 Eylül 2026, 10:53
Gold moves fast. Goldforge waits for the source bar to close. An unfinished XAUUSD candle can look convincing for several minutes and still close in a very different shape...
43
Atsushi Katayama
トレーディングシステム

Same Symbol Name. Different Broker Rules. | Ninja Symbol Passport MT5 Pro

6 Eylül 2026, 10:45
The same symbol name does not always mean the same broker rules. EURUSD, XAUUSD or US500 can look familiar on the chart while the contract and execution conditions behind the symbol are different...
50
Atsushi Katayama
トレーディングシステム

Gold Changes Fast. Two Engines Respond. | Ninja Kagehana XAU

5 Eylül 2026, 07:38
Gold does not stay in one regime. It can spend hours stretching away from a recent balance area and then reverse. At other times, it can leave a well-defined structure and continue with momentum...
60
Atsushi Katayama ürün yayınladı
Ninja Symbol Passport MT5 Pro

30.00 USD

NINJA SYMBOL PASSPORT MT5 PRO NINJA Symbol Passport MT5 Pro, brokerınızın sunduğu sembolleri ve mevcut işlem koşullarını tek panelden incelemek için geliştirilmiş, salt okunur bir çoklu sembol denetim aracıdır. Panel ve giriş adları İngilizcedir. Sembol görünümü; sözleşme, işlem modu, seans, kotasyon, spread maliyeti, tahmini marjin, Spread/ATR oranı ve broker tarafından sağlanan diğer kullanılabilir özellikleri sunar. Preflight, sembolleri mevcut yürütme koşullarına göre PASS, WARN, BLOCK veya

Atsushi Katayama
トレーディングシステム

One Check Is Not Continuous Monitoring | Ninja MT5 Doctor Pro

31 Ağustos 2026, 13:31
A clean diagnostic snapshot can be correct when it is created and still become outdated later. The terminal may be connected. Algo Trading may be enabled...
46
Atsushi Katayama
トレーディングシステム

One Chart Is Not the Whole Account: Monitor Multiple EAs with Ninja EA Portfolio Guard MT5

29 Ağustos 2026, 02:59
A trading account can look calm when each chart is viewed separately. One EA may have only one open position. Another EA may appear to be operating within its own rules...
93
Atsushi Katayama
トレーディングシステム

Candidate Found. Now Confirm the Setup with NINJA Setup Confirm MT5

27 Ağustos 2026, 09:02
Finding a candidate is only the beginning. A symbol may rank near the top of a watchlist, show clear directional context or look interesting at first glance. That still does not complete the review...
45
Atsushi Katayama
トレーディングシステム

Too Many Charts? Find What to Review Next with NINJA Market Radar MT5

25 Ağustos 2026, 04:55
Opening one chart is easy. Reviewing twenty or thirty symbols is different. When many instruments are visible in Market Watch , the first problem is often not how to enter a trade...
48
Atsushi Katayama ürün yayınladı
Ninja MT5 Doctor Pro

49.00 USD

NINJA MT5 DOCTOR PRO GENEL BAKIŞ NINJA MT5 Doctor Pro, ücretsiz Doctor sürümündeki tüm ayrıntılı kontrolleri içeren ve sürekli ortam izleme ekleyen salt okunur bir MT5 yardımcı programıdır. Expert Advisor biçiminde çalışır ancak işlem yapan bir EA veya gösterge değildir. Tek seferlik FULL CHECK ve zamanlayıcı tabanlı izleme aynı panelde bulunur. Panel ve giriş adları İngilizcedir. TAM TANILAMA FULL CHECK 15 ortam kontrolü yapar: bağlantı; terminal, hesap ve Doctor izinleri; açık grafikler ve

Atsushi Katayama
トレーディングシステム

Same Symbol, Different Rules: Check Broker Conditions with NINJA Symbol Passport MT5

23 Ağustos 2026, 12:17
A symbol name is only a label. It is not the complete contract specification. EURUSD may appear to be the same symbol at two brokers, but the trading conditions behind that name can still differ...
79
Atsushi Katayama
トレーディングシステム

EA Not Trading? Check the MT5 Environment Before Changing the Strategy

22 Ağustos 2026, 05:46
An Expert Advisor can be attached to a chart, show no obvious error and still open no trade. That does not automatically mean the EA is broken...
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