i got a job as an cdo analyst and wanted to know what kind of quantitative background I should brush up on now and in the future. i'll be mostly doing cash cdo's, but wanted to work toward learning synthetic cdo's too. my background is finance and i took math up until diff eq's and probabilities but not much stats some c++ & vba. is synthetic cdo's much more quantitative? i only have one semester to take classes so i just wanna take cruicial subjects. any advice from experts out there?