Dollar-Cost Averaging (DCA)
Quick Definition
Investing a fixed amount at regular intervals regardless of price, reducing the impact of market volatility over time.
What Is Dollar-Cost Averaging (DCA)?
Dollar-Cost Averaging (DCA) is an investment strategy where you invest a fixed dollar amount at regular intervals, regardless of the asset's price. This approach reduces the impact of volatility and removes emotion from investing.
How It Works:
- Invest same amount each period (weekly, monthly)
- Buy more shares when prices are low
- Buy fewer shares when prices are high
- Average cost per share tends to be lower than average price
Example: $500 monthly investment over 4 months:
| Month | Price | Shares Bought |
|---|---|---|
| 1 | $50 | 10 shares |
| 2 | $40 | 12.5 shares |
| 3 | $25 | 20 shares |
| 4 | $50 | 10 shares |
| Total | Avg $41.25 | 52.5 shares |
Average price: $41.25 | Your average cost: $38.10/share
Benefits:
- Removes market timing stress
- Automatic, disciplined investing
- Reduces impact of volatility
- Prevents emotional decisions
- Perfect for 401(k) contributions
DCA vs. Lump Sum: Studies show lump sum investing beats DCA ~66% of the time (because markets rise more often than fall). However, DCA provides peace of mind and is better than not investing at all.
Best For:
- Beginning investors
- Regular income (paycheck investing)
- Volatile markets
- Those who worry about timing
Dollar-Cost Averaging (DCA) Example
- 1401k contributions are automatic DCA
- 2Investing $500/month in S&P 500 index fund
Related Terms
Lump-Sum Investing
Investing a large amount of money all at once rather than spreading purchases over time, which historically produces higher returns about two-thirds of the time.
Systematic Investing
An investment approach using predetermined rules and automated processes to make consistent investments, removing emotion from decisions.
Volatility
A measure of how much and how quickly an asset's price fluctuates, indicating the degree of risk and uncertainty.
Dividend
A distribution of a company's profits to shareholders, typically paid quarterly in cash or additional shares.
Passive Income
Earnings generated with minimal ongoing effort, typically from investments like dividends, rental properties, interest, or royalties.
Inflation
The rate at which the general level of prices for goods and services rises over time, reducing the purchasing power of money.
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