RT Generic T1 Interest Rate Future Quality Options and Negative Interest Rates A1 Balbás, Alejandro A1 Laborda Herrero, Ricardo A2 Universidad Carlos III. Instituto para el Desarrollo Empresarial, A2 , AB This paper verifies the existence of diversification gains from considering the "quality option asset strategy", which adds the portfolio replicating the interest rate future quality option, as proposed by Balbás and Reichardt (2010), and a portfolio comprised of stock and bonds. The empirical results show that the gains are statistically and economically significant, especially in the negative one-month Euribor rate period. The out-of-sample optimal tangency portfolio, which includes "quality option replicas", delivers an increase in the Sharpe ratio of around 40%, as well as a positive returnHloss oIseJng the costs of higher turnover. The main source of the diversiKcaLon gains emanates from the very low correlation between quality options and stocks. Furthermore, the (at least theoretical) existence of sequential arbitrage under negative rates magnifies the low correlation effect. SN 1989-8843 YR 2017 FD 2017-07-10 LK https://hdl.handle.net/10016/24859 UL https://hdl.handle.net/10016/24859 LA eng NO Financial support from Gobierno de Aragón and FONDO EUROPEO DE DESARROLLO REGIONAL (CREVALOR) is gratefully acknowledged. DS e-Archivo RD 18 jul. 2024