Why Liquidity Can Make You a Worse Investor

A behavioural finance perspective on why the freedom to sell at any moment can undermine long-term investment success—and how a mental lock-up period can help.

Imagine investing in a company after carefully studying its business, financial strength and long-term prospects.

You believe the company can grow meaningfully over the next five years. Yet six months later, its share price has barely moved.

Meanwhile, another stock keeps appearing in the news. Its price is climbing, people online are celebrating their gains, and you begin to wonder whether your money is being wasted.

So you sell.

A year later, the company you originally owned reports stronger results and its share price rises. Your analysis may not have been wrong. The investment may simply have needed more time.

This is one of investing’s great contradictions: liquidity gives us control, but the freedom to act at any moment can tempt us to act at precisely the wrong moment.

Most investors believe liquidity is always an advantage.

It feels reassuring to know that we can convert an investment into cash whenever we want. Unlike property, a publicly traded investment can often be sold within seconds. That flexibility appears to reduce risk because we are never completely “stuck.”

In practical terms, liquidity is valuable. We need accessible cash for emergencies and short-term commitments. We should also avoid investing money that may be needed soon.

But once our genuine liquidity needs have been met, having constant access to our long-term investments can create a different kind of risk: the risk of our own behaviour.

The problem is not liquidity itself. It is what liquidity allows us to do when emotions take over.

When markets fall, loss aversion makes a temporary decline feel more painful than an equivalent gain feels rewarding. Selling offers immediate emotional relief, even when remaining invested may be the wiser long-term decision.

When prices rise quickly, fear of missing out encourages us to abandon our process and chase whatever is popular.

When an investment moves sideways, action bias makes us feel that doing something must be better than doing nothing. Boredom begins to look like evidence that the investment is failing.

We may describe ourselves as long-term investors while checking our portfolios every day and judging a five-year thesis by five months of share-price movement.

The investment horizon and the evaluation horizon no longer match.

Easy access then turns every headline, price movement and market prediction into an invitation to reconsider a decision that may not actually need reconsidering.

In financial-planning and investing conversations, I have noticed that many people do not struggle because they lack information.

They struggle because their emotions operate on a much shorter timeline than their financial goals.

A person may be investing for retirement 20 years away, yet feel distressed by what happened in the market this week. Another may buy a quality company based on its long-term economics, then lose confidence because its share price did not rise within six months.

I have experienced the same tension in my own investing journey. Studying a business and forming an investment thesis is only part of the work. The harder part often begins after buying: waiting while prices fluctuate, opinions change and other investments temporarily perform better.

This is the Value Steward perspective: good stewardship is not simply choosing where money goes. It is also managing the behaviour that follows.

The best portfolio can still produce disappointing results if its owner repeatedly interrupts the compounding process.

Many hedge funds impose lock-up periods that restrict withdrawals for a specified time.

The primary purpose is to provide managers with stable capital, especially when a strategy involves less-liquid assets or requires time to unfold. Without that stability, managers may be forced to sell investments at unattractive prices merely to meet withdrawals.

Individual investors do not need to surrender access to their money to learn from this structure. Instead, we can create a mental lock-up period: a pre-commitment to give a sound investment thesis sufficient time, unless the underlying facts materially change.

Use this three-part framework before investing:

1. Define the purpose

Ask:

• Why am I buying this investment?
• What role does it play in my overall financial plan?
• Is the money genuinely available for long-term investing?
• Am I buying because of careful analysis, or because the price has recently risen?

A clear purpose reduces the temptation to rewrite the story whenever the market changes direction.

2. Define the exit conditions

Decide what would justify selling before emotions enter the picture.

Possible reasons include:

• The original investment thesis has been invalidated.
• The company’s fundamentals or competitive position have materially deteriorated.
• The investment has become excessively valued relative to reasonable expectations.
• The position has grown too large for your risk limits.
• Your financial circumstances or goals have genuinely changed.

“The price fell,” “nothing happened for six months” and “another investment is doing better” are not automatically evidence that the thesis is broken.

3. Define the evaluation period

Ask how long the investment reasonably needs before you can judge whether the thesis is working.

Different investments require different time horizons. The appropriate period should be based on the underlying strategy—not on how frequently prices are available.

Set a sensible review schedule. For a long-term portfolio, reviewing the underlying fundamentals quarterly or semi-annually may be more useful than reacting to daily price changes.

The aim is not to ignore new information. It is to distinguish information that changes the thesis from noise that merely changes your mood.

Consider a composite example based on a common investing pattern.

An investor buys shares in a profitable company with manageable debt, recurring demand and a credible long-term growth plan. He expects the business to compound steadily over several years.

For the next six months, however, the share price moves sideways. There is no exciting story, no dramatic announcement and no immediate reward for waiting.

At the same time, technology stocks are rising rapidly. Friends are sharing screenshots of their gains, and financial media coverage makes it seem as though everyone else is becoming wealthier.

The investor sells the original company and moves the money into the popular trade.

Soon afterwards, market sentiment changes. The fashionable stock falls, while the original company continues executing its strategy and eventually appreciates.

The lesson is not that every stock that moves sideways will eventually rise. Some investment theses do fail, and disciplined investors must be willing to admit when the facts have changed.

The lesson is that the investor changed course without new evidence about the original business. Social comparison, impatience and recent price performance replaced the investment process.

The asset was not necessarily the problem. The investor’s time horizon was.

Before making your next investment, write down the answers to these five questions:

1. Why am I buying this?
   State the investment thesis in plain language.
2. What would prove me wrong?
   Identify observable facts that would invalidate the thesis.
3. How long am I prepared to wait?
   Match the evaluation period to the strategy and financial goal.
4. How often will I review it?
   Choose a deliberate schedule instead of reacting to every price alert.
5. If this investment came with a one-year lock-up period, would I still buy it?
   If the answer is no, you may not have sufficient conviction—or the money may not belong in a long-term investment.

You can also make good behaviour easier by:

• Keeping emergency funds separate from investments.
• Turning off unnecessary portfolio notifications.
• Avoiding position sizes that make normal volatility emotionally unbearable.
• Reviewing business fundamentals rather than watching price movements alone.
• Writing down any proposed sale and waiting 24 to 48 hours before acting, unless immediate action is genuinely necessary.

A mental lock-up period is not a promise never to sell. It is a promise not to let temporary emotions overrule a carefully considered process.

Liquidity is a useful financial feature, but it can become a behavioural trap. Long-term investing requires more than choosing good assets—it requires giving a sound thesis enough time to work. Sometimes the greatest investment advantage is not superior information or constant activity, but the discipline to remain patient when the facts have not changed.

Perhaps the most valuable lock-up period is not the one imposed by a fund manager.

It is the one we voluntarily impose on our own emotions.

If your next investment came with a one-year lock-up period, would you still be willing to buy it—and what would your answer reveal about your conviction?

If this article gave you a new way to think about liquidity, patience and investment behaviour:

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The information in this article is for general educational purposes only and does not constitute personalised financial or investment advice. Investments involve risk, and past performance does not guarantee future results.