Market timing โ€” trying to buy low and sell high โ€” sounds simple but fails in practice. Even professional fund managers with research teams, Bloomberg terminals, and decades of experience can’t consistently time the market. Dollar-cost averaging (DCA) eliminates this problem entirely.

How DCA Works

Invest a fixed dollar amount at regular intervals (weekly, biweekly, monthly) regardless of price. When prices are high, you buy fewer shares. When prices are low, you buy more shares automatically. Over time, your average cost per share smooths out to a below-peak price.

The Math That Proves It Works

Invest $500/month in the S&P 500 for 10 years. Even if you started the day before the 2020 COVID crash, DCA into the subsequent recovery turned that initial loss into a massive gain. S&P 500 history: 30 of 35 years since 1985 have ended positive. The best strategy: be invested, stay invested, keep adding.

Automating DCA

Set up automatic monthly contributions to your brokerage account. Enable automatic investment into your target ETF. Never turn off the automation during market downturns โ€” those are the most important contribution periods.

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DCA in Downturns = Buying on Sale
Earn: The most powerful use of DCA
Investors who maintained their $500/month DCA through the March 2020 COVID crash and didn’t sell bought shares at 30% below their previous high. Those shares 12 months later were worth 80% more than their pre-crash price. DCA rewards the consistent investor.