Trouble mounts for bitcoin and stocks as U.S. treasury borrowing costs surges

Core Insights - A global benchmark for long-term borrowing costs has reached a four-month high, with the 10-year U.S. Treasury yield rising to 4.27%, the highest since September 3 [1][2] Group 1: Impact on Borrowing Costs - The 10-year U.S. Treasury yield serves as the "risk-free" baseline rate, influencing borrowing costs across the economy and globally [2] - As the 10-year yield increases, all rates in the economy follow suit, potentially leading to financial tightening that could discourage investments and consumption [3] Group 2: Market Reactions - Bitcoin has dropped over 1.5% to $91,000, and futures tied to the Nasdaq index have decreased by over 1.6% in response to rising yields [4] - The spike in yields is attributed to President Trump's tariff threats against Europe, which may lead to retaliatory U.S. bond sales by European holders [4][5] Group 3: Global Yield Trends - The increase in U.S. Treasury yields is not isolated, as yields in Japanese government bonds have also surged following political developments in Japan [6]