How Do I Track the History of Bonds?

In the us, you have a credit score that a credit agency has a list of factors that describe your credit worthiness. And so there are now quant strategies out there that are poring over credit data and poring over characteristics of borrowers. So te others like this crazy data wrangling problem there's systematic strategies a in peer te per lending. That's really quite fascinating, tad. Some of the stuff isn't new; some of it's been going on for a while. But at the same time, the prominence of it is just much higher than before. Like theirs to stand alone is higher.