Dollar Shifts from Reserve to Portfolio Currency Status

Official reserve accumulation for the US dollar decelerated sharply starting in the mid-2010s. This decline marks a structural break in global financial flows that contradicts the assumption of a static reserve currency role.

The period from the early 2000s to 2015 was historically unusual in its scale of official hoarding. Adam Tooze, writing on substack.com, argues this configuration was driven by defensive responses to hyperglobalization rather than enduring structural norms.

Reserve accumulation decelerated after 2015

Central banks in emerging markets previously built large official dollar holdings to stabilize their currencies. This strategy peaked in the mid-2010s as the cost of holding such assets began to outweigh the benefits.

Karl Schamotta’s data shows a tight correlation between the surge in US Treasury issuance and this accumulation phase. Since 2015, Treasury issuance has continued while official reserve levels have flattened out.

Foreigners now fund corporate America

Net purchases of US assets by foreigners have shifted decisively since the early 2020s. Investors are now funding corporate America rather than the US government, altering the demand base for dollar assets.

Brad Setser’s analysis highlights this pivot towards corporate funding as the defining feature of the new configuration. The dollar now functions primarily as a medium for complex global financial engineering.

Dollar serves as portfolio currency

The term profit dollar describes the asset’s current role in global markets. It serves as the gateway to the largest and most lucrative financial markets in the world.

Surplus countries like China now obscure their accumulation of claims through non-official channels. This shift confirms that the 2000s model of open reserve accumulation is no longer the dominant paradigm.