Lesson 5 of 5
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A portfolio is not a finished object. What you bought six months ago and what you hold today can be two different positions, even if you have not made a trade. Markets move, and your weightings move with them.
Portfolio analysis sounds technical, but the core idea is simple: compare what you actually hold against what you intended to hold. This guide explains what to check in a review, when to look and how to decide whether your portfolio still fits your goals.
Many beginners buy a few funds or shares, feel satisfied with the choice and then leave the account alone. Patience can matter in long-term investing, but leaving a portfolio entirely unexamined can lead to a different problem: drift.
Drift happens when one part of your portfolio grows faster than the rest. Over time, that faster-growing holding becomes a larger share of the total. Your exposure changes without any decision from you. A portfolio that started balanced can quietly become concentrated in a single sector or a single stock.
Life changes matter too. A goal that felt distant when you invested may now be closer. Your tolerance for risk may have shifted. An investment portfolio review is a practical way to check whether what you hold still matches what you are trying to do. Reviewing is maintenance, not panic.
A portfolio review is a periodic check. You look at what you hold, compare it to what you meant to hold and decide whether the two still match.
Weighting is the share each holding represents in your total portfolio. If you intended 60% in equities and 40% in bonds, those are your target weightings. Over time, markets push those numbers around. After a strong year for equities, you might find yourself at 70/30 without having made a single trade.
Rebalancing is the action that can follow a review. It means adjusting holdings to bring weightings back towards your intended mix. You might trim a position that has grown too large and add to one that has shrunk. The aim is to restore the risk profile you chose, not to chase performance.
Rebalancing isn’t always necessary or suitable; some investors set tolerance bands, use cashflows to rebalance, or accept drift depending on strategy and costs.
One boundary matters here: reviewing is not the same as trading constantly. A review is scheduled and calm. It asks whether your position still fits your thesis. Reacting to headlines or short-term price moves is a different activity.
Scheduled reviews can reduce guesswork. Deciding in advance when you will look at your portfolio can help you avoid checking on impulse. Many investors choose to review once or twice a year, but the exact cadence is less important than having one.
Overexposure is a quiet risk. When one holding or sector grows to dominate your portfolio, your risk increases without you having made a conscious decision. If an enlarged position falls sharply, your whole portfolio feels it.
Goals change, and portfolios can end up representing the past. A portfolio built for a 20-year horizon may no longer suit you if your goal is now five years away. A review is the moment to ask whether your mix still matches your time frame and your capacity for loss.
The value of investments can fall as well as rise, and a shorter horizon leaves less time to recover from a drop.
Imagine you invest in two funds: Fund A, which tracks global equities, and Fund B, which holds UK government bonds. You put half your money into each, aiming for a balanced 50/50 split.
Over the next year, equities perform strongly while bonds stay flat. By the end of the year, Fund A has grown to represent 65% of your portfolio. Fund B now sits at 35%. You have not traded, yet your position has shifted.
Your risk profile has changed too. You are now more exposed to equities than you intended. If markets fall, your portfolio may fall more than a 50/50 mix would.
A review flags this drift into overexposure. Rebalancing would mean selling some of Fund A and buying more of Fund B to move back towards your intended weighting. You are not judging Fund A for performing well. You are restoring the level of risk you originally chose.
Pick a review cadence you can stick to. Some people choose once a year, others prefer twice a year. The point is to remove the temptation to check constantly.
When the review date arrives, compare your current weightings to your intended ones. Most platforms show a breakdown by holding or asset type. Note any holding, sector or asset class that has drifted far from the plan.
Next, check whether your goals have changed. Is your time horizon the same? Has your capacity for loss shifted? If so, your target weightings might need updating, not just restoring. This part is your investment review of whether the portfolio still matches what you need it to do.
If you decide to rebalance, remember that costs and tax can be factors. Selling holdings may involve dealing fees or capital gains considerations, depending on your circumstances and account type. It can help to understand those implications before acting.
Tax depends on the account type (e.g. ISA vs taxable account) and your individual circumstances; tax rules can change.
Finally, make any adjustments you decide on and step away. The next review is scheduled, rather than driven by day-to-day market moves.
Reviewing too often: Checking your portfolio every day and treating each market move as a reason to act is reacting, not reviewing. Frequent trading can increase costs and may lead to decisions driven by short-term noise.
Letting winners run unchecked: A holding that performs well can end up dominating your portfolio. If that concentration was not part of your original plan, it falls under drift rather than strategy.
Focusing only on performance: A review that looks only at whether you made money misses the point. The more useful question is whether your holdings still match your original goal and risk level. A portfolio can be up and still out of alignment.
A portfolio drifts on its own, so occasional reviews keep it aligned with your intentions.
Set a fixed cadence rather than reviewing on impulse.
Rebalancing is the tool that corrects drift and overexposure.
Changing goals are as valid a reason to review as changing markets.
An investment review is about alignment, not chasing performance.
Many people review once or twice a year. The exact frequency matters less than having a schedule, so you are less likely to check on impulse and react to short-term noise. Whether this is appropriate depends on your goals, time horizon and circumstances.
A review is the check. You compare what you currently hold to what you intended to hold. Rebalancing is the action that can follow if you find a meaningful gap, by adjusting holdings to move back towards your target weightings.
Overexposure is when one holding or sector becomes a larger share of your portfolio than you planned. That can increase risk without a deliberate decision from you. A review helps you spot it and decide whether to adjust.
Not usually. A disciplined process separates scheduled reviews from reacting to daily market moves. Markets move constantly, but your review dates do not have to be driven by short-term moves.
