The 2005 inclusion of Fitch ratings in the Lehman composite index ratings provides a quasi-natural experiment to identify rating-based market segmentation in the corporate bond market. Split-rated bonds with favorable Fitch rating that were mechanically upgraded to investment-grade status...

We discuss application of dissimilarity measures technique to the classification of time series obtained in experimental measurements, and use it to analyze multi-channel magnetoencephalography data (MEG). Dissimilarity measures for the 1/f component of MEG data allow to distinguish signals...

This paper examines the role of bond ratings and the effects of rating-based regulations in the corporate bond market. Exploiting an unanticipated mechanical change in how the benchmark Lehman bond indices are constructed in 2005, we show that rating-induced market segmentation of the bond...