One of the oldest pieces of investing advice is to ‘buy low and sell high’. Yet, despite how simple this sounds, many investors end up doing the exact opposite – they buy when prices are already soaring and sell only after markets have fallen significantly.

At first glance, this may seem irrational. After all, wouldn’t it make more sense to buy when prices are low and sell when they’re high?

However, history has repeatedly shown that this behaviour is surprisingly common.

The reason isn’t because investors lack intelligence or financial knowledge. More often than not, it comes down to investing psychology. Emotions and behavioural biases often influence our investment decisions far more than we realise.

Learning to recognise these psychological traps is therefore one of the most valuable skills any investor can develop.

Why Investors Buy High

Imagine reading about a stock that has doubled in price over the past year.

Your friends are talking about it. Financial influencers are recommending it. Social media is flooded with stories of investors making substantial profits.

Even if you had never considered buying the stock before, you may suddenly feel as though you’re being left behind.

This is commonly known as Fear of Missing Out, or FOMO for short. 

Instead of objectively assessing whether the company’s current valuation still offers an attractive investment opportunity, investors become fixated on its recent share price performance. Greed begins to take over, and the fear of missing further gains often outweighs the consideration of potential risks.

Ironically, this wave of buying demand usually occurs only after the stock has already appreciated significantly. By then, much of the good news may already be reflected in the share price, leaving limited room for upside while increasing the risk of a correction if expectations are not met.

Why Investors End Up Selling Low

The opposite often occurs when markets experience a sharp decline.

As stock prices fall, news headlines become increasingly negative, with growing concerns over recessions, market crashes and economic uncertainty.

Watching the value of a portfolio decline day after day can be emotionally exhausting.

Eventually, many investors convince themselves that selling is the safest course of action – not necessarily because the fundamentals have deteriorated, but simply to stop the emotional discomfort.

Unfortunately, by the time they decide to sell, prices have often already fallen substantially.

Selling during periods of panic not only locks in losses but also prevents investors from participating in the eventual market recovery.

History has shown time and again that although markets go through corrections (when share prices fall by 10% from their most recent high) and bear markets (when share prices plunges by more than 20% from their most recent high) they have also consistently demonstrated an ability to recover and reach new highs over the long term.

Our Brains Are Wired This Way

The reality is that our brains were never designed for investing.

Human beings are naturally wired to seek safety, avoid danger and minimise pain. While these instincts have helped us survive throughout history, they can become significant obstacles when making investment decisions.

Behavioural finance has identified several psychological biases that commonly affect investors, including:

i. Loss Aversion: We tend to follow what everyone else is doing because we assume the crowd must know something that we don’t.

ii. Herd Mentality: We tend to follow what everyone else is doing, believing that the crowd must know something we don’t.

iii. Recency Bias: We place too much emphasis on recent events, believing that current market trends will continue indefinitely.

iv. Confirmation Bias: We naturally seek information that supports our existing beliefs while ignoring evidence that challenges them.

On their own, these biases may appear harmless. However, when combined, they can cause investors to become overly optimistic during bull markets and excessively fearful during market downturns – ultimately leading them to buy high and sell low.

Successful Investing Is More About Behaviour Than Intelligence

Many people assume that successful investing requires exceptional intelligence.

While understanding businesses, analysing financial statements and evaluating valuations are certainly important, they are rarely the determining factors behind long-term investment success.

Instead, many successful investors distinguish themselves through patience, discipline and emotional control.

As Warren Buffett famously said, investing is less about IQ and more about having the right temperament.

After all, even the best investment strategy will only work if you have the discipline to stick with it during periods of market volatility.

How Investors Can Avoid This Trap

Although emotions can never be completely eliminated, investors can certainly reduce their influence.

One way is to develop a clear investment plan before buying a stock. By knowing exactly why you are investing in a company, as well as the circumstances under which you would eventually sell, you are less likely to make impulsive decisions when markets become volatile.

Another approach is to focus on the long-term performance of the underlying business rather than its day-to-day share price movements. As long as the company’s fundamentals remain intact and your original investment thesis still holds, short-term market fluctuations should not dictate your investment decisions.

For investors who invest regularly, adopting a dollar-cost averaging (DCA) strategy can also help reduce the emotional burden of trying to determine the ‘perfect’ time to invest.

Most importantly, remember that feeling anxious during market downturns is completely normal. The objective isn’t to eliminate emotions altogether, but rather to prevent them from controlling your decisions.

Closing Thoughts

The real reason investors buy high and sell low isn’t because they don’t understand investing. More often than not, it is simply a reflection of human nature.

Fear, greed, FOMO and various behavioural biases can quietly influence even experienced investors, leading them to make decisions that are contrary to their long-term financial goals.

By recognising these psychological tendencies, investors can become more aware of their own behaviour and make more rational investment decisions over time.

Before making your next investment decision (whether you’re considering buying a stock or selling one), pause for a moment and ask yourself a simple question:

“Am I making this decision based on careful analysis, or am I simply reacting to my emotions?”

Sometimes, that brief moment of reflection can be the difference between following the crowd and building long-term wealth through disciplined investing.

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