Behaviour & decisions · South Africa
When Should You Switch an Underperforming Investment Fund?
An underperforming fund warrants a review when its results, costs or conduct call its intended role into question. A low ranking alone does not settle the decision. First establish whether the comparison is fair, whether the reason for holding the fund still survives the evidence, and what replacing it would change after costs and tax. Patience needs a reason and a review condition; switching needs more than a better recent chart.
The difficult case is rarely a fund that has plainly broken its mandate. It is a respectable manager, a plausible explanation and several disappointing statements. The explanation might be right. It might also keep moving as each promised recovery fails to arrive.
In this article
What does underperformance mean in this portfolio?
A fund can lag another investment without failing the job it was bought to do. A South African multi-asset fund holding bonds and cash has a different risk exposure from an equity-only fund. Comparing their headline returns during an equity rally can make restraint look like incompetence. Conversely, being better than cash is a weak defence for an equity fund whose relevant equity comparator did much better.
Identify three things before interpreting the gap:
| Comparison question | Evidence to obtain | What can otherwise go wrong |
|---|---|---|
| What was the fund appointed to do? | Mandate, stated objective, limits and the original reason for holding it | A disappointing ranking becomes a substitute for assessing its role |
| What is the appropriate comparator? | Stated benchmark and genuinely comparable category, currency and risk exposure | A defensive portfolio is judged against an unconstrained equity winner |
| Whose return is being compared? | Correct share class, fee basis, dates and treatment of distributions | A published fund return is compared with a personal account return containing withdrawals and additional fees |
ASISA's guide to checking unit-trust performance explains why category, benchmark and reinvested distributions matter. These checks establish a usable comparison; they do not establish that a particular manager deserves another year.
For a rand-funded household, also establish whether the figures are in rand. A foreign-currency return and the same investment's rand return answer different questions. If the discrepancy is between a fund's reported return and what the investor earned, the separate article on the investor return gap addresses contributions, withdrawals and timing.
Why a better three-year result can mislead
Consider an invented fund and comparator. There are no contributions or withdrawals, all distributions are included, and both return series use the same net-cost basis. These are constructed past observations, not a forecast or an actual fund advertisement.
| Observation year | Fund return | Comparator return |
|---|---|---|
| 1 | −20% | 0% |
| 2 | 10% | 8% |
| 3 | 10% | 8% |
| 4 | 10% | 8% |
| 5 | 10% | 8% |
Over all five years, R100,000 becomes R117,128 in the fund and R136,049 in the comparator. Over the last three years alone, the cumulative returns are 33.10% and 25.97% respectively. The fund has the better recent three-year result while the original five-year investor remains well behind.
That does not make the recent improvement worthless. It changes the question: was the first-year loss a failure that has been corrected, an accepted exposure behaving as expected, or a risk that remains capable of recurring? The three-year number cannot answer that.
Nor are one-, three- and five-year tables three independent votes. They contain overlapping observations. When an unusually bad year drops out of the reporting window, the annualised result can improve without any new investment decision having succeeded. Compare the actual periods behind each return window.
What evidence supports retaining a disappointing fund?
A useful explanation connects the actual holdings and decisions to the result. “Markets were difficult” is not enough when the relevant market rose. “Our style is out of favour” needs evidence of which exposures produced the shortfall and whether they remain within the agreed role.
There can be sound reasons to retain a fund despite recent weakness: its defensive exposure may still serve a spending requirement; its approach may be behaving within an understood range; or replacing it may duplicate risks already present elsewhere. These are household and portfolio considerations, not promises of recovery.
The strongest retention case also states what would invalidate it. For example, if the explanation is a temporary exposure rather than deteriorating implementation, the review can examine whether the holdings and risk limits still match that claim. It need not set a return target that encourages the manager to take extra risk merely to catch up.
“We will review if the team or mandate changes materially” is observable. “We will wait until performance improves” is an instruction with no end condition. A review date creates accountability, but the relevant evidence determines the decision; a calendar anniversary does not make a weak investment sound.
What can justify investigating a replacement sooner?
Some developments matter before a long performance history accumulates. A material mandate change can remove the reason the fund was selected. A departure of the people responsible for the process can make the old track record less informative. Costs can rise, restrictions can change, or a manager can fail to explain holdings that appear inconsistent with the stated approach.
These are reasons to investigate, not an automatic sell list. A team change might preserve the process; a fee increase might accompany a different service. The task is to establish what changed and whether it matters for this holding.
Persistent shortfalls against an appropriate comparator also deserve a substantive answer. Avoiding performance chasing does not require ignoring performance. Equally, a recent recovery does not erase a governance or mandate concern. Return evidence and operational evidence need to be assessed together.
Is the recent winner a credible replacement?
The alternative needs its own case. Selecting the highest recent return can exchange a disappointing exposure for one whose favourable conditions have already occurred. A fund's ranking describes an observed period; it does not explain what produced it or what risk the household would acquire now.
The S&P US Persistence Scorecard, year-end 2025, illustrates the instability without showing that persistence is always absent. Of US large-cap funds in the top quartile in 2023, 29% stayed there in each of the following two years. In a different, longer comparison, only 4.5% of the funds above the median in 2021 remained above it in each of the following four years. These are different cohorts and tests. They are US peer rankings, not South African success probabilities or evidence that any named fund will fail.
For an alternative, examine the same mandate, holdings, people, costs and risk questions applied to the incumbent. Include the option of a different share class where available. If the real issue is the choice between active and index exposure, use the active-versus-passive comparison; a manager ranking cannot decide that structural question.
What exactly would the switch involve?
“Switch” can describe several transactions. Replacing one fund within an account is different from withdrawing from a tax wrapper and opening another. A South African tax-free investment withdrawal does not restore contribution room: replacing withdrawn money counts as a new contribution. A qualifying provider transfer follows a different process. SARS explains the contribution and transfer rules.
In a taxable portfolio, establish the actual disposal implications, rather than applying a headline capital-gains rate to the entire account value. Identify transaction charges, adviser or platform charges, any period out of the market, and whether the alternative can be held without changing the wrapper. Tax and transaction details can affect implementation even when the investment rationale is sound.
The converse also matters: a tax cost is not proof that keeping an unsuitable exposure is preferable. It is one cost in a decision that still needs to account for risk, liquidity and the household's intended use of the money. No return improvement is assumed to offset it.
A review record that can produce an answer
Write down the evidence for retaining or replacing the fund. This is not a scoring system. A fund does not earn a retention verdict by accumulating enough reassuring answers.
| Record | Example of a useful entry |
|---|---|
| Original purpose | Exposure intended to fund a defined long-term obligation, with specified risk constraints |
| Observed concern | Net return lag over matching dates; or a documented mandate, team or cost change |
| Explanation and evidence | Which holdings or decisions produced the result, supported by dated reports |
| Evidence that would contradict it | A claimed temporary exposure remains structurally embedded; or the stated controls do not operate |
| Alternatives considered | Retain, obtain missing information, change available share class, or assess replacement |
| Implementation questions | Tax wrapper, realised gains or losses, charges, settlement and overlapping exposures |
| Review responsibility | Named person, missing documents and a date to reconsider the evidence |
Suppose the original concern is a fund lagging its category. The manager supplies a convincing account of why it happened, but the household now needs that money much earlier than planned. The explanation can be correct while the holding's purpose has changed. That is a planning question, not a vote on the manager's honesty.
ClearGauge's judgement is that a defensible decision needs two separate records: why the current holding remains appropriate for its intended role, and why any alternative is preferable after its own risks and costs are examined. Neither record is supplied by the latest ranking. This article does not assess your objectives, holdings, tax position or capacity for loss and does not recommend retaining or replacing a fund.
Where several accounts or upcoming commitments make the fund question part of a wider unresolved planning decision, the Financial Clarity Review describes the scope of a separate assessment. The review record above can also be used with an existing adviser; no service engagement is needed to complete it.
Sources and as-of note: researched 6 September 2026. External research is identified by jurisdiction and reporting period. Examples are original, hypothetical calculations; actual funds, charges, tax treatment and transfer procedures require current documents. This is general educational information, not personal financial, investment or tax advice.