What Is Portfolio Rebalancing?
Portfolio rebalancing is the process of realigning portfolio weightings by periodically buying or selling assets to maintain the original desired asset allocation and risk level.
Key Characteristics
- Restores portfolio to target asset allocation
- Maintains intended risk level over time
- Implements systematic 'buy low, sell high'
- Can be calendar-based or threshold-based
- Should consider tax implications
Key Takeaways: Portfolio Rebalancing
- 1.Restores portfolio to target asset allocation
- 2.Maintains intended risk level over time
- 3.Implements systematic 'buy low, sell high'
- 4.Can be calendar-based or threshold-based
- 5.Consult a fiduciary financial advisor to understand how portfolio rebalancing applies to your specific financial plan.
Detailed Explanation
As different investments perform differently over time, your portfolio's allocation naturally drifts from its target. Rebalancing involves selling some of the better-performing assets and buying more of the underperformers to return to your intended allocation.
This process serves two purposes: it maintains your desired risk level and implements a disciplined "buy low, sell high" approach. Without rebalancing, a portfolio tends to become riskier over time as stocks typically outpace bonds.
Rebalancing can be done on a calendar schedule (quarterly, annually) or based on thresholds (when any asset class drifts more than 5% from its target). Tax-efficient rebalancing prioritizes using new contributions and rebalancing within tax-advantaged accounts.
Portfolio Rebalancing: Quick Reference
| Aspect | Detail |
|---|---|
| Definition | Portfolio rebalancing is the process of realigning portfolio weightings by periodically buying or selling assets to maintain the original desired asset allocation and risk level. |
| Category | Investing |
| Key Feature 1 | Restores portfolio to target asset allocation |
| Key Feature 2 | Maintains intended risk level over time |
| Key Feature 3 | Implements systematic 'buy low, sell high' |
| Related Service | Professional Guidance Available |
Source: SWE90 Fiduciary Advisory Team, SEC, IRS, CFP Board
Example Scenario
A 60/40 stock/bond portfolio grows to 70/30 after a stock market rally. Rebalancing involves selling stocks and buying bonds to return to 60/40, locking in some gains and reducing risk exposure.
Why It Matters
Without rebalancing, portfolios drift toward higher risk as stocks grow. Rebalancing maintains your intended risk profile and can improve risk-adjusted returns through disciplined selling of winners and buying of laggards.
"Understanding portfolio rebalancing is one of the building blocks of financial literacy. I advise all my clients to learn this concept thoroughly; it directly impacts how you build, protect, and transfer wealth."
Brett R. Henderson, CIMA, CPFA, CRPS
Fiduciary Financial Advisor, SWE90
786+
Pages of financial education
Source: SWE90
150+
Financial terms defined
Source: SWE90 Knowledgebase
3%+
Potential "Advisor Alpha" value attributed to behavioral coaching, tax-efficient withdrawals, asset location, and rebalancing in a third-party industry study (hypothetical industry-wide estimate; not a SWE90 performance result, expected return, or guarantee)
Source: Vanguard, Putting a value on your value: Quantifying Vanguard Advisor's Alpha (Kinniry et al.), latest update
The Bottom Line
Understanding portfolio rebalancing is essential for making informed financial decisions. Portfolio rebalancing is the process of realigning portfolio weightings by periodically buying or selling assets to maintain the original desired asset allocation and risk level. A fiduciary financial advisor can help you evaluate how this concept applies to your specific situation and integrate it into a comprehensive financial plan.
Brett R. Henderson, CIMA, CPFA, CRPS, Fiduciary Financial Advisor, SWE90
Frequently Asked Questions
How often should I rebalance?
Annual rebalancing is common and effective. More frequent rebalancing may generate unnecessary taxes and transaction costs. Threshold-based approaches (rebalance when off by 5%) work well too.
Should I rebalance in taxable or tax-advantaged accounts?
Preferably in tax-advantaged accounts (401k, IRA) to avoid triggering capital gains. If you must rebalance in taxable accounts, coordinate with tax-loss harvesting.
Does rebalancing improve returns?
It may modestly improve risk-adjusted returns. More importantly, it maintains your intended risk level and prevents emotional decision-making during market extremes.
Need Help Understanding Portfolio Rebalancing?
Our fiduciary advisors can help you understand how this concept applies to your specific financial situation.