As global asset prices move over time, the actual weights of different asset classes within the reserve portfolio will drift away from the approved SAA targets, requiring systematic Portfolio Rebalancing.
The Rebalancing Trade-Off Matrix
Risk departments deploy clear operational boundaries to manage rebalancing workflows, matching tracking errors against transaction costs:
  Rebalancing Strategy |   Primary Operational Trigger Method |   Core System Performance Focus
-----------------------+--------------------------------------+---------------------------------------
  Calendar-Based       | Fixed time intervals (e.g., Monthly) | High transaction costs; simple tracking
  Tolerance Band Tiers  | Crossing precise numeric caps (e.g., +-2%)| Minimizes turnover friction slips

By utilizing tolerance bands, the system allows minor portfolio drift when transaction costs are high, but triggers automated rebalancing orders if an asset class weight crosses its absolute boundary, restoring alignment with the board’s approved framework.
 
PreviousNext