Which corporations had the biggest decreases and biggest increases in credit risk in 2013? The biggest decreases in credit risk in 2013 came from Sharp (SHCAF)(SHCAY), Yellow Media Ltd. (YLWDF)(YLWWF), Axtel S.A.B. de C.V. (AXTLF) of Mexico, A2A S.p.A (AEMMF)(AEMMY) of Italy, and Supervalu Inc. (SVU). The 1 year default probability for Sharp fell 13.49% over the course of 2013. The decreases in 1 year default probabilities were 8.27% for Yellow Media, 7.42% for Axtel, 6.12% for A2A, and 5.60% for Supervalu. We explain the default probabilities and the universe of corporates used for this ranking below.