Question 1

Does dollar-cost averaging actually work?

Accepted Answer

Dollar-cost averaging (DCA) means buying a fixed amount on a fixed schedule regardless of price. Its real benefit is behavioural: it removes the decision, and with it the temptation to time a market you cannot time.

Question 2

What does dollar-cost averaging actually do?

Accepted Answer

It averages your entry price toward the average price over your buying window. In a market that rises over the long run, buying a lump sum earlier usually beats DCA on pure return — DCA wins on risk , not on expected return, because it spreads the chance of buying everything at a peak.

Question 3

How do regression bands help with DCA?

Accepted Answer

The DCA pages here fit a regression line through log price over the asset's history. That line is the fair value estimate; the bands above and below it are the range price has historically travelled around that line. Bottom floor — the lower band; historically a rare place to trade. Fair value line — the fitted trend. Peak ceiling — the upper band; historically where moves have exhausted. The premium/discount number tells you where today's price sits between them. Below fair value is not a buy signal — it is context that says this entry is cheap relative to the asset's own trend, and nothing about whether the trend continues.

Question 4

What is the catch with dollar-cost averaging?

Accepted Answer

A regression fitted to an asset's whole history assumes the future resembles that history. For an asset whose growth is slowing, the line will read "undervalued" all the way down. Use it alongside the 200-week average and Gravity Risk , not on its own.

Does dollar-cost averaging actually work?

What does dollar-cost averaging actually do?

How do regression bands help with DCA?

What is the catch with dollar-cost averaging?

Other models explained