TY - JOUR AB - Purpose– The purpose of this paper is to show that the duration‐based hedge ratio has many serious defects: first, the yield‐to‐maturity is not the market interest rate, and it cannot even serve as a proxy for the market interest rate. Second, it is difficult to choose an appropriate bond for hedging among available bonds and to calculate duration. Third, duration can only be applied to small changes of interest rate. If there is a large change in interest rate, a duration‐based hedge's performance may be worse than expected. The paper proposes an improving method to solve these problems.Design/methodology/approach– The proposed design is a model‐driven enterprise system.Findings– The proposed system integrates the complex risk management into the enterprise architecture. It can merge, import, and share resource related data across managements.Originality/value– The paper shows how to manage the risk from both parallel and non‐parallel shifts of interest rates in the proposed system. VL - 9 IS - 3 SN - 1526-5943 DO - 10.1108/15265940810875595 UR - https://doi.org/10.1108/15265940810875595 AU - Yen Eva C. PY - 2008 Y1 - 2008/01/01 TI - Immunization without duration for on‐line learning T2 - The Journal of Risk Finance PB - Emerald Group Publishing Limited SP - 278 EP - 286 Y2 - 2024/04/23 ER -