Doing Nothing Is Also a Decision

The portfolio is always changing even if you are not trading

Asset prices, proportions and actual risks fluctuate continuously. If not reviewed, the portfolio may deviate from the original goal without the investor realizing it.

Delay has real costs

Not trimming weakened assets, not rebalancing or holding on to cash for too long can all reduce long-term performance. Opportunity costs are often more silent than direct losses but are still very important.

Discipline needs to apply even when not buying or selling

A good investing system not only says when to buy or sell, but also says when to hold on. This helps distinguish strategic patience from decision avoidance.

Not acting on purpose

The investor reviewed the thesis, weight and risk, then decided to keep it the same because the portfolio was still consistent with the plan.

Inaction due to procrastination

Investors avoid making decisions because of fear of being wrong, fear of recording losses, or lack of evaluation criteria. This is a behavioral risk that needs to be controlled.

Inaction due to lack of system

Investors do not have a review schedule, rebalancing threshold or selling conditions, so the portfolio drifts with the market without being managed.

Principle: Portfolio status always carries risk

Any investment portfolio at any point in time reflects a specific risk allocation. When the market changes, the actual risk level of the portfolio also changes, even if the investor does not make any transactions. For example, if stocks increase sharply while bonds move sideways, the stock weighting will increase, leading to a higher overall risk than the original target. Not rebalancing means the investor accepts this new level of risk at once. passive way. Therefore, not taking action is essentially accepting a different risk structure than the original plan.

Principle: Time magnifies the effects of procrastination

The impact of inaction is often subtle in the short term but becomes significant over time. If investors delay cutting losses in a long-declining asset, losses can widen and weaken the resilience of the entire portfolio. Similarly, holding cash for too long in a high-inflation environment reduces the real purchasing power of the asset. Time acts as an amplifier, turning small delayed decisions into large financial consequences.

Principle: Not deciding also represents a market perspective

When investors leave a portfolio unchanged or disbursed, they implicitly express a view that the current structure is appropriate or that the risks of a new course of action outweigh the expected benefits. Even if not explicitly expressed, this is still an investment stance. If this stance is not periodically evaluated against new data and context, the portfolio can become deviated from its original financial goals.

Principle: Systemic discipline reduces reliance on emotions

Decisions to not act often stem from fear of being wrong or waiting for absolute certainty. However, financial markets always exist with uncertainty. Building a rule-based decision-making system, such as periodic rebalancing or asset allocation based on percentage thresholds, helps investors clearly determine when to act and when to hold still. The choice to do nothing then becomes part of a disciplined system, instead of being the result of emotional indecision.

Keep hot stocks exceeding the target proportion

An investor in Vietnam allocates 50 percent of his portfolio to stocks and 50 percent to bonds. After a period of strong stock market growth, the stock proportion increased to 70 percent. If investors do not rebalance because they expect the market to continue rising, they have made the decision to accept significantly more risk than originally planned. When the market adjusts strongly, the portfolio can fall deeper than the determined risk tolerance.

Hold cash long-term in an inflationary environment

During periods of low deposit interest rates and rising inflation, some investors keep most of their assets in bank deposits because of market risk concerns. This decision not to disburse money leads to the real value of the asset gradually decreasing over time. Even though no nominal loss is recorded, the purchasing power of the asset is reduced, affecting long-term financial goals such as buying a house or retiring.

Do not cut losses on fundamentally declining corporate stocks

An investor holds shares of a business whose business results have continuously declined for many years. Because investors did not want to admit their initial mistakes, they did not sell. This decision to not act leaves capital locked in an underperforming asset, while also missing out on opportunities to invest in businesses with better fundamentals.

Confusing patience with decision avoidance

Many investors believe that inaction is a sign of long-term investing, when in reality they are avoiding re-evaluating their initial assumptions. Strategic patience should be based on periodic analysis, not portfolio neglect.

Do not re-evaluate the portfolio periodically

Failure to review the portfolio prevents changes in risk, asset quality and economic conditions from being reflected in a timely manner. This increases the likelihood that the portfolio will deviate from its financial goals.

Hold cash due to waiting for the perfect moment

Waiting for the absolute optimal price often leads to missing many reasonable investment opportunities. Markets rarely provide high certainty, so constant delays can reduce the efficiency of wealth accumulation.

Action criteria are not clearly defined

When there are no clear rules about when to buy, sell or rebalance, investors can easily fall into a state of doing nothing due to a lack of basis for decision-making. This causes the portfolio to be dominated by short-term emotions and circumstances.

Turn inaction into controlled decision

1. Set a portfolio review schedule at least every quarter.
2. Determine the rebalancing threshold, for example when the weight deviates more than 5 percentage points from the target.
3. For each major asset, clearly write down the conditions for continuing to hold and the conditions for selling.
4. If you decide not to do anything after the review, record the reason in your investment diary.
5. Recheck your decision at the next review instead of leaving the list alone.

Exercise 1 - reflection

List three cases in your current category where you have not taken action in the past 12 months. Explain the reasons and evaluate whether the decision was intentional or due to procrastination.

Exercise 2 - calculation

A target portfolio consists of 60 percent stocks and 40 percent bonds. After one year, the stock proportion increased to 75 percent. Calculate the percentage of the portfolio that needs to be sold off to return to the original allocation.

Exercise 3 - case_study

Let's say you hold 500 million in cash for 3 years with inflation averaging 4 percent per year. Analyze the impact of not investing this amount on the real value of the asset.