If you think a big crash is coming, you basically want to avoid high-volatility assets, right? So IIUC, you'd just want to move into lower-volatility assets:

If you think a big crash is coming, you basically want to avoid high-volatility assets, right? So IIUC, you'd just want to move into lower-volatility assets: bonds, money-market funds, or TIPS if you want inflation protection.