#加密生态动态追踪 Triple Witch Day is coming, and this Friday will be a critical moment. Four times a year, this day sees options and futures expiring simultaneously, with trading volume surging and volatility amplifying—it's inevitable. The market will either surge rapidly or plunge sharply; a stable trend is basically out of the question.

What’s more worth paying attention to is the Bank of Japan. They will announce their interest rate decision on Thursday. The recent decline in the crypto market has already largely priced in expectations of a potential rate hike by Japan. Remember the situation back then—Bitcoin prices plummeted, and the Nikkei index also dropped sharply overnight. The root cause behind this was yen arbitrage trading.

Why focus so much on the yen? The reason is simple. Japan’s long-term interest rates are hovering near zero, making the yen the cheapest currency globally for borrowing. Smart funds have been engaging in arbitrage—borrowing yen, converting to USD, buying US stocks or tech stocks, and then moving into high-volatility assets like Bitcoin. As long as the yen remains weak, these trades are profitable.

But the flaw in this logic is that once the yen appreciates, everything changes. Borrowing costs rise, and those seemingly profitable leveraged positions quickly become burdensome. Funds have no choice but to close positions and repay loans. The key point is that they usually don’t sell yen for cash but instead liquidate risk assets directly. This causes pressure on US stocks, tech stocks, and even Bitcoin. The big drop in July and August 2024 was a real-world reflection of this logic.

Currently, we face a double layer of uncertainty: the technical volatility of Triple Witch Day combined with the market impact of the Bank of Japan’s policy shift. Short-term, it’s easy to see repeated fluctuations. A more practical approach is to reduce positions, strengthen risk management, and avoid blindly following market sentiment. Being cautious these days is never wrong.