How Bond Yield Floors Affect Returns and Diversification in Asset Allocation

Summary

This analysis examines whether limits on how far bond yields can fall weaken bonds’ return contribution and diversification value. It models a global bond portfolio, a global 60/40 stock-bond portfolio, and a leveraged risk-balanced portfolio, using equal allocations to ten-year government bonds from six developed markets. Yield floors are defined relative to starting yields, and the study compares several floor levels with a no-floor case over a one-year horizon.

The modeled results suggest that a floor only 50 basis points below starting yields materially reduces bond and portfolio returns, while a 100-basis-point floor leaves outcomes closer to the no-floor case. Overall portfolio VaR changes little, but protection in equity-stress scenarios is more affected by a restrictive floor. These conclusions depend on capital-market assumptions, including recent volatility estimates and a zero assumed stock-bond correlation, and are scenario results rather than forecasts. The article’s market context and yield observations reflect its 2021 source period and should not be read as current conditions.

Key ideas

• The analysis compares global bonds, a 60/40 portfolio, and a leveraged risk-balanced portfolio under several yield-floor assumptions.
• A floor 50 basis points below starting yields materially reduces modeled bond and portfolio returns.
• A floor 100 basis points below starting yields produces outcomes closer to the no-floor case.
• Portfolio VaR appears relatively resilient, while bond protection during equity stress is more sensitive to a restrictive floor.
• The conclusions depend on modeled assumptions, a one-year horizon, and market conditions described in a 2021 source.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.