Yield curves are a valuable tool for economic analysis. It is particularly interesting to analyse the difference between Government Debt yields and Corporate Debt yields (credit spreads). This gives insight into confidence within the financial markets and economic health in general.

The government yield curve is easily accessible here but corporate yields are more difficult. I need a curve built from an index which gives an indication of the whole market.

There are some datasets available on quandl which give yields for different types of bonds. The S&P 500 Bond Index provides some good perspective on S&P 500 bonds. I can't find anything though that gives an indication of either corporate bond prices or yields at different maturities. The maturity breakdown is needed to build a yield curve.

Does anyone know where corporate bond yield curve data (corporate bond index yields/prices by maturity) is published for free? I'm particularly interested in XML/JSON resources.

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    $\begingroup$ Perhaps this question is more relevant to Quantitative Finance? $\endgroup$
    – ChinG
    Nov 27, 2015 at 16:16
  • $\begingroup$ Thanks - didn't realize there was a quantitative finance stack exchange. Posted here as well: quant.stackexchange.com/questions/21959/… $\endgroup$
    Nov 27, 2015 at 16:19
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    $\begingroup$ I'll leave this here also in case any useful feedback from Economics $\endgroup$
    Nov 27, 2015 at 16:20
  • $\begingroup$ You're not supposed to cross-post between multiple StackExchange sites, so I'd suggest deleting this one: meta.stackexchange.com/questions/64068/… $\endgroup$ Nov 27, 2015 at 20:22


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