datoid

The 10-year Treasury yield spiked to 10.17% on October 11, 1979, representing a 4.0 standard deviation move above its 60-day average of 9.20%. This extraordinary jump occurred over just 10 trading days, rising from 9.93% to breach the 10% psychological barrier. The timing aligns with record-high inflation (CPI at 332.41) and unemployment at historic lows of 4.30%. This combination suggests investors were demanding significantly higher compensation for inflation risk during this period of economic overheating. Such extreme statistical deviations in Treasury yields are rare and often signal major shifts in monetary policy expectations.