Why does Bitwise warn that traditional 60/40 portfolios face fiat currency risk?

Bitwise CIO Matt Hougan warns that the traditional 60/40 portfolio is 100% exposed to the declining value of the US dollar because both stocks and bonds are fiat-denominated assets. To hedge against this systemic risk, investors are increasingly pivoting to non-fiat stores of value like Bitcoin and Gold.
Why does Bitwise warn that traditional 60/40 portfolios face fiat currency risk?

Bitwise CIO Matt Hougan warns that the traditional 60/40 investment strategy—allocating 60% to stocks and 40% to bonds—leaves investors dangerously exposed to fiat currency risk. While this model is designed to balance equity growth with debt stability, Hougan argues that both asset classes are ultimately tied to the health of the US dollar. As the dollar’s purchasing power faces pressure from rising national debt and inflation, Bitwise suggests that a truly diversified portfolio must include non-fiat assets like Bitcoin and gold to protect against currency devaluation.

This shift in strategy is already manifesting in market data, with Gold and Bitcoin ETFs recently drawing a record $7 billion in combined inflows. The trend signals a growing consensus among institutional and retail investors that the 'safe haven' status of US Treasuries is being challenged. Hougan notes that while stocks can hedge against some inflation, they are still fundamentally valued in a currency that the government can print, whereas Bitcoin offers a mathematically fixed supply that operates outside the traditional banking system.

For US-based investors, this perspective redefines the concept of risk management. Traditionally, bonds were the ultimate hedge against stock market volatility. However, in an era of fiscal expansion, bonds may now represent a 'return-free risk' if the currency they are denominated in loses value faster than the interest they pay. Consequently, Bitcoin is being repositioned not just as a speculative technology play, but as a critical component of a modern, resilient portfolio aimed at preserving long-term wealth.

Looking ahead, market participants should monitor the continued flow of institutional capital into spot Bitcoin ETFs as a primary indicator of this 'non-fiat' thesis gaining mainstream adoption. Additionally, upcoming US Federal Reserve meetings and fiscal policy announcements will likely act as catalysts for further movement into hard assets. If the dollar continues to show signs of long-term structural weakness, the migration from traditional 60/40 models toward a '60/40/20' or similar crypto-inclusive allocation could become the new standard for wealth preservation.