Boundary-Induced Apparent Risk Aversion in Nonergodic Multiplicative Growth
Why approaching financial ruin makes even rational investors look risk-averse
When an investment system faces a hard stopping point—like bankruptcy—the mathematically optimal strategy changes dramatically. A new analysis shows that investors approaching this boundary should bet smaller amounts than traditional growth theory suggests, and this cautious behavior emerges purely from the boundary itself, not from personal fear of risk.
This explains a puzzling gap between how economic theory says people should invest and how they actually do near financial cliffs. The finding suggests that apparent risk aversion in real portfolios might be rational responses to real constraints rather than personality quirks—which could improve how we model everything from personal retirement planning to corporate risk management.