Crash Buying vs DCA
Why holding cash for market crashes is a form of market timing that consistently underperforms disciplined dollar cost averaging.
Crash buying is an appealing strategy on the surface: hold cash in reserve and deploy it in stages as the market falls. A typical plan might allocate 10% of the cash reserve at a 10% drawdown, 15% at a 15% drawdown, and so on. The appeal is obvious — buy low, deploy when others panic.
What crash buying gets right
The strategy has real strengths worth acknowledging:
- It reframes crisis as opportunity rather than threat
- The trigger design is thoughtful and pre-planned
- It emphasises safety nets and staged deployment rather than all-in bets
These are good instincts. The problem is not the mindset. It is the mechanics.
The fundamental problem
Crash buying IS market timing. While your cash sits idle waiting for a drawdown, it is not earning equity returns. If the market rises 20% before any drawdown triggers are hit, you have missed that entire return.
Backtesting consistently shows that DCA — deploying capital at regular intervals regardless of conditions — produces higher long-run returns than crash buying strategies. The reason is simple: the market spends more time going up than going down. Time spent out of the market is time not compounding.
The waiting period is not free. Every day your cash sits in reserve, the opportunity cost accumulates. And the longer the market rises without a crash, the larger that cost becomes.
The deeper issue
Beyond the return mathematics, crash buying skips a critical developmental step: learning to handle volatility while invested.
Managing drawdowns is a skill built through practice. You develop the ability to hold through discomfort by actually holding through discomfort. A crash buying strategy engineers a lower-drawdown experience by keeping you partially uninvested, which means you never develop the muscle memory to hold through a real crisis.
When the crash finally arrives and you deploy your reserve, you will be holding a full position through a drawdown for the first time — with no practice. The strategy designed to make crashes easier actually makes them harder, because you arrive at the moment of maximum stress with the least experience.
The verdict
DCA is not exciting. It does not feel clever. But it keeps capital working, compounds continuously, and builds the volatility tolerance that every long-term investor eventually needs. Crash buying feels prudent but underperforms — and leaves you less prepared for the very event it was designed to exploit.
Related
- Dollar Cost Averaging — The systematic deployment approach that outperforms crash buying
- Timing Bias in Selling — How the same timing instinct that drives crash buying also damages selling decisions
- Position Graduation — Why surviving real volatility is essential to building conviction