Recently, I revisited the story of one of the most legendary retail traders in the Japanese market, and honestly, Takashi Kotegawa (, known as BNF ), still has an incredible story. This guy didn’t come from money, had no institutional connections, and no formal financial training. He simply learned by observing charts, studying patterns, and reading company fundamentals. Pure self-taught.

What fascinates me is how Kotegawa knew how to capitalize on chaos. During the Livedoor scandal in 2005, when the Japanese stock market was in total panic, he literally thrived. While everyone was running scared, this guy was buying during the volatility. It’s said he made over 2 billion yen—about $20 million—in just a few years. His approach was simple but effective: short-term opportunities, precise execution, no emotions.

But what truly cemented his legend was the J-Com trade in 2005. A trader at Mizuho Securities made a monumental mistake—placing an order for 610,000 shares at 1 yen instead of 1 share at 610,000 yen. Imagine that. Kotegawa spotted the anomaly within seconds, bought the undervalued shares massively, and when the error was corrected, he made huge profits. That’s nerves of steel.

The most interesting part is that with all that money, Takashi Kotegawa remains incredibly discreet. He uses public transportation, eats at budget restaurants, and almost never gives interviews. He avoids appearing in the media, which only adds more mystery to his figure. He’s not the typical trader who needs to flaunt his wealth.

His legacy is simple but powerful: in a world dominated by hedge funds and mega-institutions, Kotegawa proved that a retail trader with discipline, skill, and the right timing can shake markets. His story continues to serve as a reminder that in markets, intelligence and emotional control are worth more than any connection or initial capital.