Have you heard of the name Takafumi Koyagawa, also known as BNF? In the cryptocurrency trading community, this person’s legendary track record is often mentioned. It’s said that in just 2 years, he turned $13,000 into $153 million. Why he draws so much attention comes down to his strategy.

BNF’s starting point was never a particularly fortunate one. When he was a 20-year-old college student, he was drawn into the world of investing after seeing a story about the stock market on the television news. Lacking funds, he worked multiple jobs while teaching himself the complexities of the market. This painstaking preparation period became the foundation for his later success.

BNF truly made a name for himself in the 2005 JCOM Holdings incident. A trader at Mizuho Securities placed an incorrect order—selling 610,000 shares at 610,000 yen each when they should have sold 610,000 shares for 1 yen each. While nearly everyone panicked, BNF calmly seized the chance and bought 7,100 shares at the low price. When the price surged, he sold part of his holdings and kept the rest overnight, and as a result, he earned a profit of $17 million from that single trade.

However, BNF’s story is not only about success. At one point, he ignored his own trading rules during a crash in the U.S. stock market and invested a large amount, leading to a loss of more than $10 million. This painful experience became the most valuable lesson for him. He learned firsthand the importance of maintaining discipline.

BNF is still referenced by many traders today because his success is reproducible. A calmness that isn’t swayed by emotions, absolute trust in his own rules, and a long-term perspective. By sticking to these principles, he increased his funds by more than 130 times within 2 years, and by 2008 he had built up assets totaling $153 million.

For cryptocurrency traders, there’s a lot to learn from BNF’s approach. First, stay calm and don’t let yourself be thrown off by market volatility. Don’t forget the fact that emotional decision-making is responsible for 90% of traders’ failures. Next, establish your own trading system and follow it strictly. BNF himself approached trading the way you play a video game—placing distance between himself and the emotional swings of profit and loss.

BNF’s current influence isn’t just based on past performance, but on the effectiveness of his way of thinking. No matter how the market environment changes, trading principles built on discipline and rationality have universal value. His story proves that with the right mindset and strategy, it’s possible to achieve major success in the world of trading.