Invest in a single target-date fund matched to your expected retirement year (e.g., Target Date 2050). The fund automatically shifts from growth-focused (stocks) to conservative (bonds) as the date approaches.
People who want a complete, automatically managed investment strategy in a single fund with no ongoing allocation decisions.
Estimate your expected retirement year.
Find a target-date fund matching that year from a low-cost provider.
Invest in it consistently. Do not second-guess the asset allocation.
Check the expense ratio — keep it under 0.15% for best results.