Investing

Rebalancing

The process of realigning portfolio weightings by periodically buying or selling assets to maintain target allocation.

Definition

Rebalancing is the process of realigning the weightings of a portfolio by periodically buying or selling assets to maintain the original desired level of asset allocation. Over time, market movements cause portfolio allocations to drift from their targets — a 60/40 stock/bond portfolio might become 70/30 after a stock market rally. Rebalancing involves selling some stocks and buying bonds to return to the 60/40 target. This disciplined approach forces investors to sell high and buy low. Common rebalancing strategies include calendar-based (quarterly or annually) and threshold-based (rebalance when allocation drifts more than 5% from target). Rebalancing maintains the intended risk level of the portfolio.