Bitcoin’s weakness may mean the U.S. stock-market rally isn’t sustainable. Here’s why. - MarketWatch
1. Bitcoin weakness signals fragile market rally; S&P 500 reached record close. 2. Crypto underperformance hints declining liquidity; could burden risk assets soon. 3. Tariff threats and Fed rate action add macro uncertainty impacting stocks. 4. Divergence in asset performance suggests caution for S&P 500 sustainability.