Recently, I've been closely watching the data of the U.S. stock market and discovered a phenomenon worth warning about. The trading volume of call options on the S&P 500 index surged to $2.6 trillion on Wednesday, accounting for 60% of the entire options market. This scale is nearly equal to the total market capitalization of the cryptocurrency market, which is $2.73 trillion. Simply put, everywhere you look, people are betting on the stock market continuing to rise through call options, and this optimism has become completely one-sided.

Wall Street is playing a high-stakes game of risk-taking, and this wave of risk appetite has directly spilled over into Bitcoin. Since April, the S&P 500 and Nasdaq have both delivered double-digit gains, with large amounts of capital flowing out into the crypto market, pushing BTC from below $70k to $80k in just a few weeks. On the surface, this is undoubtedly good news for the crypto space; the correlation effect of capital flows has brought Bitcoin's correlation with U.S. stocks back to 2023 levels, indicating it is once again tightly linked to risk assets.

But here lies the problem. When so many people are on the same side, extremely optimistic, the market has actually become overly crowded. Goldman Sachs analysts have directly described the current sentiment as a "semi-rational chasing rally"—meaning the gains have long since detached from fundamentals. More alarming data comes from the Philadelphia Semiconductor Index, whose 14-week RSI has soared to the highest level since the tech bubble of 1999, which is not a good sign.

The current market is like the climax of a party—everyone is celebrating wildly. But for Bitcoin investors, this is also poison. Once the speculative frenzy in U.S. stocks cools down and capital begins to withdraw, the risk of sharp downward volatility will inevitably hit Bitcoin and the entire crypto market. Currently, BTC is around $81k, seemingly stable in the short term, but the potential for intense turbulence remains at any moment. The market is already stretched tight; every step forward warrants close attention.