Liu, Zilong; Liang, Hongyan - In: FinTech 4 (2025) 2, pp. 1-16
This paper assesses whether fintech mortgage lenders align pricing with borrower risk using conforming 30-year mortgages (2012-2020). We estimate default probabilities using machine learning (logit, random forest, gradient boosting, LightGBM, XGBoost), finding that non-fintech lenders achieve...