When Hedges Become Traps: The Correlation Collapse That Strikes at the Worst Possible Moment
International diversification is one of the most widely endorsed principles in portfolio construction — until a genuine crisis arrives and every supposedly uncorrelated asset moves in lockstep. The predictable failure of cross-border hedges during market stress is not an anomaly; it is a structural characteristic of how global capital behaves under pressure, and US investors need a more sophisticated framework to account for it.