Direct answer
Is rebalancing better than simply holding the original portfolio?
There is no universally better answer. Rebalancing keeps risk closer to the plan and forces you to buy low relative to your target, but it can add trading costs and taxable events. Buy-and-hold has lower effort and fewer taxes, but lets drift change your risk over time. The right choice depends on your plan, costs, and tax situation.
What rebalancing gives you
- Risk stays close to the target mix
- A fixed schedule removes reaction decisions
- Overweight winners are trimmed automatically
- Works best with fractional shares and low costs
What buy-and-hold gives you
- Minimal effort and fewer decisions
- Fewer taxable events
- No rebalancing costs
- Risk drifts with market performance
What the evidence says
Research generally shows that rebalancing controls risk rather than reliably boosting returns. The return difference depends on the period, the assets, the frequency, and costs. The main benefit is staying close to the plan you chose.
Limits
- Past return differences do not predict future ones.
- Tax rules and costs can change the conclusion.
- Neither approach fixes a target mix that does not fit you.
Common questions
Questions about this workflow
Does rebalancing usually increase returns?
It can, in some periods, because it trims winners and buys laggards. But its main purpose is risk control. Do not expect it to outperform in every market.
Which approach has lower taxes?
Buy-and-hold usually realizes fewer taxable gains because you sell less. Rebalancing can be made more tax-aware by selling losers first, but tax rules and lot selection still matter.