Rates were little changed Wednesday as mortgage-backed securities recovered from yesterday’s late losses. This morning, the August Producer Price Index (PPI) declined by 0.1%, well below an expected increase of 0.2%. Core PPI, which excludes volatile food and energy components, also fell 0.1%, and was 2.3% higher than one year ago. Results from today’s 10-year Treasury auction will be released at 1:00 PM. The Fed will release its Beige Book, a periodic survey of economic activity by the 12 regional Federal Reserve Banks, at 2:00 PM.