Sensitivity of the Euro OIS Term Structure to ECB Policy Rate Surprises
Herzel StefanoNicolosi Marco
CEIS Research Paper
We analyze the sensitivity of the euro-area yield curve to revisions in market expectations of the ECB policy rate. Using changes in the maintenance-period forward OIS as a market-based measure of policy-rate surprises, we document that yield responses vary systematically across maturities. To interpret these patterns, we adopt a short-rate model with stochastic jumps occurring only at scheduled ECB meeting dates and derive closed-form expressions for the condi- tional sensitivity of yields to changes in the expected jump size. We compare the model-implied term-structure responses with realized yield changes on days of large revisions in expectations. The model reproduces the cross-sectional shape and magnitude of observed sensitivities, especially the pronounced peak at intermediate maturities, underscoring the importance of incorporating scheduled jump times when modeling interest-rate dynamics.
 
 
Number: 619
Keywords: OIS, €STR, ECB, monetary policy surprises, scheduled jumps, term-structure sensitivity
JEL codes: E43, E52, G12
Volume: 24
Issue: 1
Date: Monday, January 12, 2026
Revision Date: Monday, January 12, 2026