Portfolio rebalancing: when and how do you bring your investments back into balance?

Rebalancing is returning your portfolio to the allocation you previously chose by adjusting what has become too large or too small. Because prices do not move in sync, your allocation shifts automatically: an investment that rises sharply becomes a larger part of your wealth, causing you to take on more risk than you intended without realizing it. Rebalancing is therefore not a trick to beat the market, but maintenance to keep your risk and target allocation consistent.

In this article you will read why a portfolio becomes unbalanced, when to intervene using fixed dates or bandwidths, and how to do so without unnecessary costs. We pay special attention to how physical gold and silver fit into a rebalancing strategy, because they behave differently from stocks or bonds.

What is rebalancing?

Rebalancing is the periodic return of your investment allocation to the pre-chosen target allocation. Suppose you chose an allocation across equities, bonds, precious metals and cash. Over time the actual allocation diverges because one category can rise faster than another.

When rebalancing you reduce part of what has become relatively large and increase what has lagged, so that you return to your target allocation.

The underlying idea is risk management, not chasing returns. Your original allocation reflects the amount of risk that suits you. If you leave the allocation alone, the market will gradually determine your risk profile instead of you.

Small deviations are normal; the question is whether the deviation becomes so large that the portfolio no longer matches the risk you chose. Read more about that allocation in our article on asset allocatie and the role of precious metals.

Rebalancing versus changing your strategy

With rebalancing your target allocation remains the same, whereas with a strategy change you decide that the target allocation itself must change. That distinction is more important than it seems. If your equity portion grows from 60% to 68% and you bring it back to 60%, you are rebalancing. If you decide that 60% no longer suits you and that 50% will be your target from now on, you change your strategic asset allocation.

The difference lies in the reason. Rebalancing is a reaction to normal price movements within a plan that still makes sense. A strategy change belongs to a change in your situation, such as a different income, an approaching retirement or a shorter investment horizon.

Those who confuse the two adjust an allocation based on the market instead of based on their own goals.

Why does a portfolio become unbalanced?

A portfolio becomes unbalanced because the categories you invest in perform differently. This gradual shift is called drift. If equities rise faster than bonds for years, the equity portion will naturally grow to a larger weight than you intended, resulting in higher risk. Deposits and withdrawals also play a role. If you invest new money in one category, the proportions shift as well.

The same applies to precious metals. If you hold part of your wealth in physical gold and the gold price rises, you will notice that the gold position becomes a larger share of the portfolio over time than at the start. That is exactly why investors periodically review their allocation. Not because a higher or lower price is a signal in itself, but because the proportions have shifted.

The live gold price and live silver price can be found on our price pages.

Calendar, bandwidth or a combination?

There are roughly three ways to determine when you rebalance: at fixed times, as soon as the allocation deviates too much, or a combination of the two. All three keep your risk in check, they mainly differ in how often you intervene and how much you pay in costs.

Hybrid approach

The hybrid approach is common in practice because it separates those two decisions:

1. is the allocation still correct;
2. and is the deviation large enough to justify a transaction?

This way, not every check automatically leads to buying or selling. A commonly used guideline is to check annually and only intervene when there is a deviation of, for example, 5 percentage points from the target allocation.

Research on rebalancing methods indicates that a threshold-based approach can limit unnecessary transactions compared with fixed calendar dates.

A worked example with stocks, bonds, gold and cash

An example makes rebalancing concrete. The amounts below are for illustration only; this is about the method, not a recommended allocation or personal advice.

Suppose you start with a target allocation and investable assets of € 100,000. After a period in which stocks rise and the other categories lag, your portfolio looks like this:

In this example the stocks portion has grown to 68%, while the other categories are below their target weights. As a result, the portfolio will react more strongly to a price drop in stocks than originally intended. When rebalancing, you partially reduce the overweighted stocks portion and add to the underweighted categories so that the risk once again matches your original intention.

Note that gold has become underweight here: rebalancing therefore means buying more in this case, not selling. If gold had risen strongly and become too large, the same logic would work in the opposite direction.

Rebalancing investments with new contributions

The calmest way to rebalance is often with new money instead of by selling. If you invest periodically, you can direct that new contribution to the categories that have lagged. That way you bring the allocation back toward your target without selling anything, which limits transaction costs and any potential tax bill.

This approach works best as long as your portfolio is still growing and your contribution is large enough relative to the deviation. With large imbalances or a portfolio that is no longer growing, you may sometimes have to reduce an overweighted category. You can also selectively reinvest dividends, interest or other freed-up cash into the underweighted part.

Physical gold and silver in a rebalancing strategy

Physical gold and silver behave differently within a rebalancing strategy than stocks or bonds, and that deserves a deliberate approach. Many investors hold physical precious metals as the strategic core of their portfolio: a tangible counterbalance they keep for the long term, precisely because they often move differently from the stock market. Those who see it that way typically prefer to rebalance with new contributions rather than by selling the gold position.

That is also due to the practical side. Unlike a market order, physical metal carries a premium on purchase and a spread on sale, and silver is subject to VAT. You also sell a physical bar as a whole: a one-kilogram gold bar cannot be sold partially, whereas the same weight in smaller denominations gives you more flexibility.

That friction makes frequent adjustments with physical precious metals less attractive than with listed investments. If you add physical gold or physical silver to the allocation, it is wise to consider at purchase stage how you might later sell or rebalance, and to match the denominations accordingly.

Should you treat gold and silver the same?

No, gold and silver do not automatically need to have the same role or target weight within your allocation. Both are physical precious metals, but their price dynamics, market structure and costs differ. For example, silver is typically more volatile and taxed differently than gold. When you own both, it can therefore be sensible to track them separately in your portfolio overview instead of grouping them under a single item "precious metals".

There is no universally correct ratio; the role within your own strategy is decisive. If you want to understand more broadly what role defensive categories play, also read our article on gold or bonds.

Is rebalancing your portfolio the same as taking profits?

Rebalancing can involve selling a position that has risen, but taking profits is not the objective. In a rebalancing you sell part of a holding because a category has become too large relative to your target allocation, not because you want to catch a price peak. A conscious decision to sell is often driven by very different reasons, such as a reached financial goal, a changed time horizon or a necessary withdrawal.

If your gold or silver position has become oversized after a price rise and you want to reduce it, that is possible. The Silver Mountain buys precious metals back via sister company Inkoop Edelmetaal, so you can both buy and sell at one address.

If you want to specify when to reduce a physical position, a selling strategy for gold and silver goes into that in more detail. Whether reducing holdings is appropriate remains your own judgment; The Silver Mountain does not provide individual investment advice.

You can rebalance your investment portfolio at fixed intervals, when a predetermined deviation occurs, or with a combination of the two.

When is it better not to intervene?

Not every deviation from your target allocation calls for action. A small drift is normal and rebalancing too often incurs unnecessary costs in transaction fees and spreads, while hardly changing your risk. The art is not to rebalance as much as possible, but precisely enough to safeguard your risk objective.

Restraint is sensible when the deviation remains within your bandwidth, when transaction costs are disproportionate to the correction, or when you consciously hold physical gold as a long-term core. A price rise on its own is also not a reason to sell: rebalancing follows your plan, not the mood of the day.

And if it is not the market that has shifted but your own situation, then reassessing the strategy is the first step, not rebalancing to an allocation that no longer fits.

Costs, spread and taxation

Rebalancing is not free, and those costs should be part of your consideration. Every purchase and sale involves transaction costs. Even without a separate transaction fee there is usually a difference between bid and ask price. With physical precious metals, the premium and the spread between buy and sell price also play a role. The more often you adjust, the more those costs add up.

Rebalancing can also have tax consequences. In the Netherlands, wealth typically falls under box 3, and selling and redistributing investments can affect your tax position. The precise consequences depend on your personal situation and the applicable rules. Therefore have a large or complex redistribution reviewed in advance if necessary.

How can you rebalance your portfolio step by step?

A structured approach prevents rebalancing from becoming an emotional issue. You go through these steps:

1. Set your target allocation. Determine which percentage you aim for per category, fitting your risk profile and horizon, not the category that performed best.
2. Calculate the current weighting. Divide the value of each category by the total portfolio value. Use the same calculation date for all categories, because precious metal prices move continuously.
3. Compare current to target. Place the percentages side by side and determine which categories are overweight or underweight.
4. Assess whether action is needed. If the deviation remains within your threshold, you do not need to do anything.
5. Look to new contributions first. Allocate new money or distributions to the laggards before you consider selling.
6. Weigh the costs. Factor transaction costs, premium, spread, liquidity and tax consequences into your decision.
7. Record your actions. Note what you adjusted, which thresholds you apply and when you will check again, so you remain consistent.

Physical precious metals within your portfolio

The Silver Mountain has specialized in physical precious metals since 2008 and serves both sides of the market: you buy gold, silver or platinum from us and may sell back later if you wish. The Silver Mountain is listed in the AFM register under license number 12048860 for offering investment objects.

You buy gold and silver at the current price, with prices that are updated automatically. For gold bars The Silver Mountain works with refiners on the LBMA Good Delivery List; that qualification refers to the refiner and the large professional bars, not to individual retail bars or coins.

You can have your order delivered insured via our personal delivery service or collect it by appointment in Baarn and The Hague, and you can have your precious metals insured stored via Edelmetaal Beheer Nederland if desired. If you want to reduce a position when rebalancing, sister company Inkoop Edelmetaal handles the buyback.

Conclusion: rebalancing your investments provides structure

Rebalancing keeps your portfolio aligned with the risk you chose in advance by periodically adjusting what has run up or lagged behind. It is a form of maintenance, not an attempt to time the market. Whether you work with fixed dates, bands or a combination, the core is that you follow your plan rather than the price of the day.

So first determine your target allocation, choose a method, and preferably adjust with new contributions. For physical gold and silver, take into account the premium, the spread, the denominations and the role the metal plays as a long-term core in your portfolio. Read more about the broader long-term perspective in our article on structural wealth building.