Rates inched higher Tuesday in extremely volatile trading. Weaker than expected economic data initially helped mortgage-backed securities markets, but unfavorable repricing began occurring by late-morning. In economic news, the October Producer Price Index (PPI) rose 0.4%, below the consensus forecast of 0.8%. Core PPI, which excludes food and energy components, fell 0.6%, and was 1.5% higher than one year ago. October Industrial Production was flat, which was also below expectations. Stocks moved sharply lower. No other data will be released today.