Investment Analysis

Portfolio Rebalancing

The process of buying and selling assets to realign your portfolio with its target allocation.

Also known as: rebalancing portfolio, asset rebalancing

What You Need to Know

Portfolio rebalancing keeps your risk level consistent over time. As markets move, some asset classes outperform others, causing your mix to drift from the plan you set.

Why Rebalance:

  • Maintain your chosen risk level
  • Lock in gains by trimming winners
  • Add to lagging assets while they’re cheap
  • Enforce discipline (rules-based approach beats gut feelings)

Common Rebalancing Methods:

  • Calendar-based: Rebalance on a schedule (quarterly or annually)
  • Threshold-based: Trade only when an allocation drifts beyond a set band (e.g., ±5%)
  • Hybrid: Check on a schedule but act only if thresholds are breached

Tax Considerations: Use tax-advantaged accounts first, direct new contributions to underweight areas, and harvest losses in taxable accounts to offset gains.

Sources & References

This information is sourced from authoritative government and academic institutions:

  • investor.gov

    https://www.investor.gov/introduction-investing/investing-basics/glossary/rebalancing