Quote of the day by David Swensen: "The underlying driving force behind market timing decisions seems to be emotional — fear, greed, chasing performance — buying something after it has gone up, disappointment, and sales after something has declined."

“The underlying driving force behind market timing decisions seems to be emotional — fear, greed, chasing performance — buying something after it has gone up, disappointment, and sales after something has declined.” — David Swensen

Emotions often drive market timing
David Swensen, the late investment manager and former chief investment officer of Yale University’s endowment, highlighted one of the biggest challenges investors face: making financial decisions based on emotions rather than a disciplined investment strategy.


Market timing often appears attractive because investors want to buy at the bottom and sell at the top. In practice, however, emotions such as fear and greed can make it difficult to execute that strategy consistently.

Read more: Quote of the day by Dean Williams: "Expertise is great, but it has a bad side effect. It tends to create an inability to accept new ideas"


Fear can trigger selling at the wrong time
When markets decline sharply, fear can overwhelm an investor's long-term outlook. Falling prices may create anxiety about further losses, prompting investors to sell their holdings.

The problem is that selling after a significant decline can lock in losses and leave investors on the sidelines when markets eventually recover. Swensen's observation points to the emotional cycle that can cause investors to abandon their plans precisely when discipline becomes most important.

Greed and performance chasing
The opposite problem emerges when markets or individual stocks rally strongly. Investors may become tempted to buy assets simply because they have performed well recently.

This behaviour, commonly known as performance chasing, can result in investors entering an investment after much of the rally has already taken place. The expectation of further gains can overshadow questions about valuation, risk and long-term suitability.

The importance of investment discipline
Swensen's quote underlines why having a clearly defined investment strategy can be more effective than repeatedly attempting to predict short-term market movements.

For long-term investors, maintaining an appropriate asset allocation, investing according to a predetermined plan and periodically reviewing portfolios can help reduce the influence of emotions.

A lesson for investors
Markets will inevitably experience periods of euphoria and uncertainty. Investors cannot control market movements, but they can control how they respond to them.

Swensen's message is therefore a reminder that successful investing is not necessarily about predicting every market turn. It is also about recognising emotional biases and avoiding decisions driven by fear, greed or the temptation to follow recent performance.