US Warning: Bond Market in Danger Zone – Investors Warned

US bond market has entered a ‘danger zone’ after a sharp jump in yields on US government debt spurred fresh concerns in global financial markets. Market strategists warn that the rise in yields is now starting to weigh on equities and other risk assets.

The concerns followed a broad bond sell-off that pushed the 30-year US Treasury yield above 5.19%, the highest level since 2007 or before the global financial crisis of 2008.

Meanwhile, the 10-year US Treasury yield rose toward 4.69%. The sharp rise was driven by lingering inflation fears and expectations that U.S. interest rates will stay high for longer.

“Strategists at HSBC say the current conditions in the US bond market are now at a level that could press on nearly all asset classes. ‘US Treasuries are now firmly in the danger zone,’ HSBC wrote in a note cited by CNBC International on Thursday 21 May 2026.

Analysts say the jump in yields is making borrowing costs more expensive for companies and households. The tighter financing conditions could weigh on equity valuations, particularly for technology stocks and firms heavily dependent on debt financing.

Market volatility in bonds has also been sparked by the heating up of tensions in Iran, pushing energy prices higher and broadening global inflationary pressures. Investors are now concerned that the Federal Reserve may keep policy tight for longer than markets had anticipated.

Steve Sosnick, Chief Strategist at Interactive Brokers, described the current situation as a ‘yellow alert’—not a full-blown crisis. He warned, however, that pressures could intensify if the 10-year yield moves toward 4.65%-4.70% and the 30-year yield approaches 5.5%.

Ian Lyngen, an analyst at BMO Capital Markets, also cautioned that equities could suffer deeper corrections if the 30-year yield keeps rising toward 5.25%. He noted that the global market is now highly sensitive to inflation, rate policy, and geopolitical developments throughout 2026.