Yuan's Reserve Flow: A $13T Pool vs. Crypto's Underground

The global system of official foreign exchange reserves is a massive, slow-moving machine. As of the fourth quarter of 2025, the total pool stood at $13.14 trillion. This figure represents the accumulated savings of central banks worldwide, a legacy of the post-Bretton Woods system where the US dollar has been the primary reserve currency for over 70 years.

Within this colossal pool, the dollar's dominance remains absolute. Its share was 56.77 percent in Q4 2025, a slight dip from the previous quarter but still anchoring the system. This entrenched position shows the deep inertia of global financial flows, where the dollar is the default for trade, debt, and liquidity.

Against this backdrop, the Chinese yuan's position is marginal. Its share increased to 1.95 percent in Q4 2025, up from 1.92 percent the prior quarter. While this marks a steady, if incremental, gain, it underscores how far the yuan remains from challenging the dollar's hegemony. The currency's growth is a deliberate geopolitical strategy, but its current footprint in the world's reserve vaults is a tiny fraction of the dollar's.

Rogoff's Prediction: A 5-Year Yuan Surge and Crypto's Limits

Harvard economist Kenneth Rogoff predicts the Chinese yuan will become a global reserve currency within five years. His argument centers on a powerful, immediate driver: investors are starved for ways to diversify away from the US dollar. This demand is now being met by a clear political signal, as President Xi Jinping's explicit call for yuan internationalization marks a turning point for Chinese technocrats. The setup is a classic "flight to safety" dynamic, where geopolitical friction over the dollar's use as a weapon fuels a search for alternatives.

Yet Rogoff draws a sharp line between the legitimate financial system and the underground economy. He acknowledges crypto's popularity in illicit transactions, noting the global underground economy is roughly 20% of total output, a space where stablecoins have already gained traction. However, he is unequivocal that they are popular in the underground economy but will not be able to replace the dollar in the legitimate economic sphere. The reason is structural. Official reserve currency status requires deep, liquid, and regulated markets for government bonds and derivatives. The underground economy, by its nature, lacks this depth and transparency.

The bottom line is one of scale and function. While crypto's underground market may approach $20 trillion, it operates outside the rules-based system that central banks need for reserve management. For the yuan to succeed, it must offer the same kind of deep, liquid, and trustworthy markets that the dollar provides. Rogoff's five-year timeline hinges on China opening its government bond market and building sophisticated derivatives, not on the growth of digital assets in the shadows.

Flow Catalysts and the Liquidity Hurdle

The explicit policy signal has arrived. President Xi Jinping has formally named reserve status as a goal for the yuan, publishing the call in the party journal Qiushi. This is a critical shift from strategy to settled direction, disciplining internal bureaucracies and reframing all incremental financial moves as steps toward that destination.

Yet the structural barrier is profound. The yuan's bond and credit markets are fundamentally shallow compared to the US. They lack the deep liquidity, wide range of instruments, and mature derivatives needed to support large-scale, liquid reserve holdings. For a currency to be a reserve asset, it must offer a trusted, frictionless exit for central banks. China's managed capital account and partial convertibility currently complicate that case.

For flows to accelerate, China must act. The key steps are clear: open its government bond markets to foreign investors and build independent financial rails like CIPS. Without these, the policy ambition remains a distant target, as the underlying market infrastructure cannot yet support the volume and trust required for a reserve currency.