Comment by stouset

Please everyone note that there is a long-standing and somewhat pointless argument over whether or not DCA means “regular monthly contributions” versus “taking a lump sum contribution and dividing it up into contributions over time”.

Strictly speaking time in the market beats timing in the market. If you have a lump sum, the theoretically best option is to put it into an index fund today.

Most people in most situations don’t have one lump sum to invest, so recurrent monthly contributions to retirement accounts is the way to go (and what OP here is advocating).