On Twinvest, some time ago I looked at this and it's a souped up dollar cost averaging. In dollar cost averaging you buy a number of shares proportional to (1/share price); in Twinvest it's proportional to (1/share price)^2.
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.