Direct answer
Why use a fixed schedule instead of rebalancing when markets move?
A fixed schedule turns rebalancing into a routine rather than a reaction. It removes the question “is now the right time?”, which is the hardest question to answer in the moment, and it keeps the portfolio close to its target with a predictable number of decisions per year.
Fewer decisions
Every ad-hoc rebalance invites a judgment call about the market. A schedule answers it once: rebalance on day X. The strategy does the rest.
Less emotion
Selling a winner feels wrong after a rally; buying a laggard feels wrong after a drop. A schedule makes both mechanical, which is exactly what a disciplined plan needs.
Fit with life
Calendar rebalancing is easy to plan around — roughly once a month, once a quarter, or once a year. For a solo family office, that fits an async routine with no market-watching.
Limits
- A schedule can miss a large move between rebalances — by design, since you are not reacting.
- Threshold rebalancing can complement a schedule if you want an early trigger.
- Discipline does not remove market risk.
Common questions
Questions about this workflow
What if the market drops the day after my rebalance?
That is a risk of any plan. The schedule keeps the process honest; it does not promise good timing.
Can I combine a schedule with thresholds?
Yes. Many plans use a schedule plus an early trigger if any position drifts far beyond its target. Decide the trigger in advance.