About his legacy

Although CIS avoids mainstream attention, his name commands respect in Japan’s investing circles. He wrote a bestselling book, gives rare interviews on platforms like Nico Nico Douga, and occasionally shares wisdom on X (formerly Twitter) to his massive following.

What makes CIS legendary

From zero to empire: He started as a self-taught gamer turned trader and built a fortune without connections or a hedge fund.
Transparency and honesty: Unlike many gurus, he’s admitted losses and fears, making him more relatable than most.
Silent influence: Institutions quietly track his moves. Even regulators have acknowledged his impact on liquidity.

Today, CIS represents something rare: a trader who thrives on skill, speed, and silence. No private jets, no hedge fund banners—just unmatched results and clean execution.

As he once said in an interview, “The moment I feel proud is the moment I start to lose.” That humility, combined with battlefield instincts, is what makes CIS the undisputed shadow king of Japan’s financial world.

CIS leverages innovative perspectives and agile strategies to unearth hidden opportunities, consistently challenging conventional wisdom and reshaping the investment landscape with fresh insights.

His trading strategy

CIS's approach is a blend of pure technical analysis, rapid execution, and deep tape reading. He doesn’t rely on company fundamentals or macro forecasts—instead, he treats trading like a video game: fast, reactive, and score-based.

How CIS trades

Order book mastery: He reads the market depth like a live radar, sensing momentum and fake orders.
Short-term scalping: Positions often last seconds to minutes, especially in volatile markets.
High conviction bets: When the opportunity is right, he’s not afraid to place huge positions worth billions of yen.

CIS uses extremely strict mental frameworks—if a trade doesn’t make sense within seconds, he exits. Emotion is not part of the process. He likens trades to puzzle pieces: either they fit instantly or they’re discarded.

He also studies other traders closely, using crowd psychology to anticipate missteps and take the other side of the trade.

Why he is known

CIS is a pseudonymous Japanese day trader whose identity remains largely unknown, yet his impact on the Tokyo Stock Exchange is undeniable. Starting with roughly ¥1.7 million in the early 2000s, he has reportedly earned over ¥20 billion (approx. $150M+) through day trading, making him one of Japan’s wealthiest independent traders.

He gained fame through online forums like 2channel, where he would post real-time updates of trades, profits, and philosophies. But unlike typical social media influencers, CIS avoided fame, rarely appeared in media, and stayed committed to a low-key, performance-driven lifestyle.

Why traders follow him

Massive single-day wins: Known for executing trades worth billions of yen with lightning precision.
Transparent online persona: Openly shared real-time trade ideas and losses—a rarity in the space.
Mythic status: Despite being active for decades, his true identity and daily routines remain a mystery.

CIS embodies the ideal of the disciplined lone wolf trader—blazing through markets while most only hear whispers of his impact.