The MA Index: Rethinking Stock Market Valuation in a Debt-Driven Economy

Many investors rely on the Buffett Indicator (the ratio of market cap to GDP) to determine if the stock market is overvalued. However, I have been considering the significant role that government debt plays in injecting liquidity into the economy and supporting corporate earnings in today’s financial system. As a result, I developed a simple framework to assess market valuation:

MA Index = Total Market Cap / (GDP + National Debt)

Using current U.S. data:

• GDP is approximately $32 trillion

• National Debt is around $39 trillion

• Combined, this totals about $71 trillion

• Market Cap is estimated to be between $70 trillion and $75 trillion

This calculation places the MA Index near 1.0, indicating a state of equilibrium. The premise is that, in a highly leveraged fiscal system, valuation should take into account both productive output and liquidity provided by the government.