REGULARIZATION METHODS FOR ESTIMATING A MULTI-FACTOR CORPORATE BOND PRICING MODEL: AN APPLICATION FOR BRAZIL

Paulo Roberto Guimarães, Osvaldo Candido and André Ronzani
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Paulo Roberto Guimarães: Graduate School in Economics, Catholic University of Brasilia, Brazil
André Ronzani: Graduate School in Economics, Catholic University of Brasilia, Brazil

Annals of Financial Economics (AFE), 2021, vol. 16, issue 01, 1-20

Abstract: The present work focused on studying which factors affect Brazilian inflation-linked corporate bond prices in a primary market setting. The explanatory variables tested were rating, maturity, duration, issuer governance level, industrial classification, collateral, tax exemption, public offering modality, financial volume, coupon frequency, number of issues, number of days since going public, and the Brazilian basic interest rate target. In order to choose the set of variables with best predictive performance, best subsets ordinary least square (OLS) and least absolute shrinkage and selection operator (LASSO) were applied on a testing sample. For estimating purposes, we also tested the Ridge estimator. For both LASSO and Ridge, we used the k-fold approach to choose the optimal value for the lambda penalty. In terms of smallest mean squared error, the OLS estimator outperformed both the Ridge and the LASSO. This result suggests that the variance-bias trade-off might not be a concern for the Brazilian case.

Keywords: Corporate bonds; LASSO; Ridge; best subset (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1142/S2010495221500056

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