Modern Portfolio Theory tells investors to diversify: buy stocks for growth, bonds for income, and gold or crypto for hedging. In the last six weeks, this theory has failed. Stocks are down, crypto has crashed $1 trillion, and gold has fallen to $4,033. There has been nowhere to hide except cash.
This correlation breakdown is typical of liquidity crises. When fear spikes—driven by AI bubble concerns and Fed policy—investors sell everything. The nuances of asset classes matter less than the need for liquidity. Bitcoin, once touted as “uncorrelated,” has proven to be highly correlated with tech stocks. Gold, the “inflation hedge,” is falling despite sticky inflation because rates are high.
This environment makes the job of fund managers incredibly difficult. The Bank of America survey highlights the AI bubble as a top risk, but hedging against it is hard when all assets move together. This is why the mood in the market is so grim; the traditional safety nets have holes in them.
However, analysts like Giovanni Staunovo of UBS urge patience. They argue that correlations will normalize. Gold will eventually detach from the rate narrative, and quality stocks will detach from the bubble narrative. But for the moment, the market is a monolith of red.
The lesson for investors is that diversification protects against idiosyncratic risk (one company failing), but it offers little protection against systemic risk (the whole market repricing).