The dollar's decline, particularly in April, was not driven by investors divesting from US assets. Instead, it was caused by investors with large, unhedged dollar exposures belatedly adding hedges. This involves selling dollars in the spot or forward markets, creating downward pressure without actual asset sales.

Unlike the past, where economics dictated a strong yen despite loose policy, markets are now driven by politics. The Japanese government is allowing the yen to devalue to manage its debt, even as interest rates rise. This weakens the yen, strengthens the dollar, and could fuel a US equity boom via carry trades.

Typically, a weaker US dollar helps developing countries by reducing their debt burden. However, the trade war that weakened the dollar also increased the risk premium on these nations, causing their actual borrowing costs to rise—an unusual and detrimental economic outcome.

Despite official statements against rapid currency depreciation in Japan and Korea, policymakers likely view a weaker currency as a beneficial stimulus. With negative output gaps and competition from China, the goal is not to reverse the trend but to manage its pace to avoid market disorder and US Treasury scrutiny.

While U.S. fiscal deficits remain high, new tariffs are reducing the trade deficit. This means fewer U.S. dollars are flowing abroad to foreign entities who would typically recycle them into buying U.S. assets like treasuries. This dynamic creates a dollar liquidity crunch, strengthening the dollar.

The US is signaling a major shift from its long-standing 'King Dollar' policy. By being willing to devalue the dollar, it can strategically intervene in currency markets to bolster allies like Japan while simultaneously hurting economic adversaries like China by making US manufacturing more competitive.

The U.S. dollar's decline is forecast to persist into H1 2026, driven by more than just policy shifts. As U.S. interest rate advantages narrow relative to the rest of the world, hedging costs for foreign investors decrease. This provides a greater incentive for investors to hedge their currency exposure, leading to increased dollar selling.

Officials at IMF meetings expressed surprise at how little the Trump administration has focused on foreign exchange rates. There is a growing expectation that this could change next year, with a renewed focus on the dollar if the US trade deficit fails to normalize, creating a latent political risk.

The combination of restrictive trade policy, locked-in fiscal spending, and a Federal Reserve prioritizing growth over inflation control creates a durable trend toward a weaker U.S. dollar. This environment also suggests longer-term bond yields will remain elevated.