Dollar's global role may erode faster as monetary system turns multipolar: Barry Eichengreen

UC Berkeley professor Barry Eichengreen says the U.S. dollar’s long, gradual erosion could accelerate as the global monetary system becomes more multipolar, with the renminbi and other currencies taking larger roles. He says smooth diversification could benefit the global economy, while an abrupt loss of confidence in the dollar could be disruptive.

Analysis

The investable distinction is between a slow portfolio reallocation and a confidence shock. Gradual diversification can pressure the dollar at the margin, but does not automatically displace Treasuries: reserve managers still need deep, liquid assets, and limits on convertibility constrain the renminbi’s role. The near-term risk is therefore less a clean “dollar down” trend than episodic repricing of U.S. term premium and FX hedging costs if diversification coincides with fiscal or policy uncertainty.

A weaker dollar would support unhedged non-U.S. assets and dollar-priced commodities, but EM beneficiaries are selective: dollar borrowers gain balance-sheet relief, while importers and countries with weak external funding may not. A sharp confidence shock could also trigger global risk aversion and dollar funding stress, initially hurting EM equities despite any longer-run FX benefit.

Over days to weeks, positioning and U.S. data are likely to dominate; over 1–3 months, watch reserve-allocation evidence, Treasury auction demand, and hedging costs. The 6–18 month structural thesis depends on credible alternatives developing, not rhetoric alone. Contrarian view: the market may overread multipolarity as an imminent reserve-currency handoff. Without evidence of sustained reserve shifts or a rise in Treasury risk compensation, avoid treating dollar weakness as a one-way trade.

Key Decisions for Investors

• Do not make a large outright short-USD position on this commentary alone. If U.S. fiscal/policy uncertainty rises and the dollar weakens across major pairs, consider a defined-risk UUP put spread; size for a reversal on stronger U.S. data or renewed safe-haven demand.
• Treat GLD or a diversified ex-U.S. equity exposure as conditional diversifiers, not pure dollar shorts. Add only if dollar weakness broadens and U.S. real yields are not rising enough to offset it; reduce if the dollar and real yields strengthen together.
• Within EM, favor monitoring external funding exposure and dollar debt rather than buying the broad complex indiscriminately. A stronger dollar or widening EM credit spreads would falsify the near-term beneficiary case.
• Track official reserve disclosures, Treasury auction metrics, and cross-currency basis. Escalate the thesis only if these show persistent diversification or materially higher dollar-funding/term-premium stress; absent confirmation, no urgent trade.