Share your insights or perspective on the financial matter presented in the input.

Do credit ratings (by Moody's, S&P, and Fitch) have any relevance?
I like Muro questions! No, I don't think they do.  Because for me, as a personal finance investor type just trying to save for retirement, they mean nothing. If I cannot tell what the basic business model of a company is, and how that business model is profitable and makes money, then that is a "no buy" for me.  If I do understand it, they I can do some more looking into the stock and company and see if I want to purchase. I buy index funds that are indexes of industries and companies I can understand.  I let a fund manager worry about the details, but I get myself in the right ballpark and I use a simple logic test to get there, not the word of a rating agency. If belong in the system as a whole, I could not really say.  I could not possibly do the level of accounting research and other investigation that rating agencies do, so even if the business model is sound I might lose an investment because the company is not an ethical one.  Again, that is the job of my fund manager to determine.  Furthermore and I mitigate that risk by buying indexes instead of individual stock.