Rebalancing your portfolio means adjusting your investments to maintain your original asset allocation.
Over time, market movements change the weight of different assets. Stocks may grow faster than bonds, which can shift your portfolio away from your intended balance.
Rebalancing helps restore the structure you originally planned.
Why Rebalancing Matters
When one asset class grows faster than others, it can increase the overall risk of your portfolio.
For example:
You start with:
- 70% stocks
- 30% bonds
After a strong stock market rally, your portfolio may become:
- 85% stocks
- 15% bonds
That change exposes you to more volatility than intended.
If you need a refresher on how allocation works, read:
How Rebalancing Works
Rebalancing simply means selling a portion of assets that have grown and buying assets that have become underweighted.
Example:
Your target allocation:
- 70% stocks
- 30% bonds
After market changes:
- 80% stocks
- 20% bonds
To rebalance, you would:
- sell some stocks
- buy more bonds
This restores your original balance.
If you are building a portfolio structure from scratch, review:
👉 How to Build an Investment Portfolio (Step-by-Step Guide)
How Often Should You Rebalance?
There is no single rule, but common approaches include:
1️⃣ Calendar Rebalancing
Adjust your portfolio on a fixed schedule.
Examples:
- once per year
- twice per year
2️⃣ Threshold Rebalancing
Rebalance when an asset class drifts beyond a set percentage.
Example:
Rebalance when allocation changes by more than 5–10%.
Many investors combine both methods.
Does Rebalancing Reduce Risk?
Yes, rebalancing helps maintain your intended risk level.
Without it, a portfolio can slowly become more aggressive or more conservative than planned.
Understanding your risk tolerance is also important.
Review:
Rebalancing and Diversification
Rebalancing also reinforces diversification.
When one asset class becomes too large, your portfolio may become less diversified.
To understand diversification fundamentals, see:
👉 Diversification Explained for Beginners
Maintaining diversification is one of the most effective ways to control risk.
Tax Considerations When Rebalancing
Rebalancing inside taxable brokerage accounts may trigger capital gains taxes if you sell investments at a profit.
You can learn more about how investment taxation works here:
👉 How Investment Taxes Work in the US (Beginner Guide)
Many investors prefer to rebalance inside retirement accounts where transactions are not taxed immediately.
The SEC provides educational guidance about diversification and portfolio management here:
investor.gov
Common Rebalancing Mistakes
Some investors make these errors:
- Rebalancing too frequently
- Ignoring transaction costs
- Letting emotions drive allocation changes
- Chasing recent performance
Instead, focus on maintaining your long-term strategy.
Key Takeaways
✔ Rebalancing restores your target asset allocation
✔ Market movements naturally change portfolio weights
✔ Rebalancing helps maintain your intended risk level
✔ Most investors rebalance once or twice per year
✔ Taxes and transaction costs should be considered
Rebalancing your portfolio is a simple but powerful habit.
It keeps your investments aligned with your long-term plan and prevents your portfolio from drifting into unintended risk.
