Compare dollar-cost averaging with lump-sum investing.

Compare dollar-cost averaging with lump-sum investing.

• A. Dollar-cost averaging reduces timing risk but may underperform in rising markets.
• B. Lump-sum often yields higher expected returns.
• C. Dollar-cost averaging is always best in rising markets.
• D. Lump-sum often yields higher expected returns; dollar-cost averaging reduces timing risk but may underperform in rising markets.

Answer: (D)

The key idea is how the timing of when you invest affects outcomes. Lump-sum investing puts the entire amount to work immediately, so your money has the full time in the market to grow, benefiting from the market’s general upward drift over long horizons. Dollar-cost averaging spreads purchases over time, which reduces timing risk—the chance you’re investing just before a drop or at a bad entry point—but it also means a portion of your money sits in cash longer and misses early gains. In rising markets, that delay costs you some of the upside, so lump-sum often leads to higher expected returns. Dollar-cost averaging is valuable for reducing the risk of a poor entry when you’re anxious or unsure about near-term movements, but it can underperform in steadily rising markets.

The key idea is how the timing of when you invest affects outcomes. Lump-sum investing puts the entire amount to work immediately, so your money has the full time in the market to grow, benefiting from the market’s general upward drift over long horizons. Dollar-cost averaging spreads purchases over time, which reduces timing risk—the chance you’re investing just before a drop or at a bad entry point—but it also means a portion of your money sits in cash longer and misses early gains. In rising markets, that delay costs you some of the upside, so lump-sum often leads to higher expected returns. Dollar-cost averaging is valuable for reducing the risk of a poor entry when you’re anxious or unsure about near-term movements, but it can underperform in steadily rising markets.