Fixed income is where quantitative finance’s modeling tradition runs deepest and data runs thinnest. This hub covers term-structure models (affine, HJM-lineage, and their ML successors), yield-curve forecasting, bond risk premia, and credit — spread dynamics, default modeling, and corporate bond market structure.

Two things distinguish strong papers here. First, honest treatment of the small-sample problem: there are only a handful of independent interest-rate cycles in any dataset, so out-of-sample claims rest on far less evidence than equity research enjoys, and papers that acknowledge regime dependence (pre/post-2008 zero-rate era, the 2022 repricing) age better. Second, attention to market plumbing — corporate bond research that ignores dealer intermediation costs and stale quotes produces backtests no desk can trade. The intersection with machine learning is growing fast, but the base rates favor parsimonious models in this asset class more than anywhere else.

Related hubs: Risk Management, Options & Derivatives, Factor Investing.

Explainers from the corpus: ARDL models: appropriate use vs p-hacking → · risk measures beyond VaR →