*Rather than concluding that various levels of macro volatility βjustifyβ various levels of valuation, itβs more accurate to say that high macro volatility increases the discomfort of investors, leading investors to pay low valuations and to demand high future returns as compensation for their discomfort. Low macro volatility makes investors more comfortable, encouraging them to pay high valuations and to demand little in the way of future compensation for taking risk. Once investors are paying high valuations, poor long-term returns are baked in the cake. At that point, any increase in macro volatility causes those poor returns to be far more immediate. The reverse is true once investors have driven valuations to depressed levels.*
Record Stock Valuations, Fed Independence, and Macro Volatility - Hussman Funds 

Hussman Funds
Record Stock Valuations, Fed Independence, and Macro Volatility - Hussman Funds
Current record-high stock market valuations rest partly on the assumption that inflation volatility and recession risk will remain low. Historicall...