Question 1

Is lump sum or DCA better?

Accepted Answer

Historically, in markets that trend up over time, lump sum wins on average because your money is in the market sooner. DCA wins when prices fall after you start, since you keep buying cheaper. DCA’s main benefit is behavioural — it removes timing pressure and reduces the pain of buying right before a crash.

Question 2

When should I choose DCA?

Accepted Answer

When you are nervous about timing, deploying a large sum relative to your net worth, or expect volatility. DCA trades a bit of expected return for a lot less regret and a smoother entry. If you have high conviction and a long horizon in an uptrending asset, lump sum is usually mathematically better.

一時金と DCA の計算ツール

正しい答えはスローガンではなく道によって決まります