ISM Inflation Data Triggers Bond Market Volatility

Financial markets experienced significant volatility on November 4, 2026, driven by a combination of political outcomes and economic indicators. Stock prices climbed and bond yields initially rose following the announcement of the Senate majority around 11:30 p.m. ET.

While bonds maintained modest gains overall, they faced downward pressure at the market open due to rising stock prices. This instability intensified at 10 a.m. when the Institute for Supply Management released new ISM data. The report triggered widespread investor concerns regarding forward-looking inflation, leading to a bout of selling in the bond market.