Because in reality, investing is never a purely rational exercise. Decisions are influenced by experience, risk perception, cognitive biases and the collective dynamics within teams. This is precisely where diversity in investment committees becomes a major lever.
Investing is never entirely rational
Financial models and market data obviously play a central role in asset management. But final decisions are always made by people.
And as in any complex decision-making process, several elements come into play:
- individual experience
- the perception of risk
- confidence in your own analyses
- cognitive biases
- group dynamics
In an environment where profiles are very similar, a well-known phenomenon can appear: groupthink.
The term was popularised by the American psychologist Irving Janis. He studied it through disastrous foreign policy decisions, taken by very close-knit groups in which nobody dared to contradict the others any more.
When the members of a committee share similar backgrounds, references or ways of thinking, disagreements become rarer and decisions can converge on a consensus too quickly.
The problem is not agreement in itself.
The problem is the lack of real debate before that agreement.
Why diversity improves the quality of decisions
Diversity in an investment committee is not only a matter of fairness or representation. It has a direct impact on the quality of investment decisions.
When different profiles work together, in terms of gender, culture, generation or career path, several effects appear.
1. Less groupthink
Diversity naturally creates more discussion and more contradiction.
This helps avoid reaching a consensus too quickly and means investment assumptions are tested more thoroughly. An idea that has stood up to several objections is generally stronger than one accepted without discussion.
2. A richer perception of risk
Not every investor sees risk in the same way.
Some experiences make people more sensitive to economic cycles, others to geopolitical or behavioural risks. Someone who lived through a financial crisis early in their career does not look at a rising market in the same way as someone who has only known good years.
Diverse profiles therefore broaden the overall perception of risk. What one person does not see, another often spots.
3. More questions, and often better ones
In investing, good questions are often more valuable than quick answers.
A diverse team tends to challenge the obvious more and to explore different angles of analysis. Why would this scenario be the right one? What could make it fail? What would we do if we were wrong?
4. A better understanding of clients
Investors and clients are themselves diverse.
Having varied teams often makes it easier to understand the expectations and behaviour of different types of investors. A team that looks more like its clients more easily grasps their questions, their fears and their priorities.
Diversity and performance: an increasingly recognised link
Several recent studies show a link between diverse teams and the quality of investment decisions. They are based on measured results, not just impressions.
In hedge funds (investment funds managed more freely than traditional funds), diverse teams outperform homogeneous ones by 1.96% to 5.59% a year once risk is taken into account, according to a study published in the Review of Financial Studies (2024). The authors explain this in particular by less overconfidence and better risk management.
In venture capital (funding for young companies), a study published in the Journal of Financial Economics (2021) shows that firms that hire more female partners improve the performance of their investments.
In asset management, this translates into:
- better discipline in decisions
- more balanced governance
- a greater ability to challenge convictions
Diversity alone does not guarantee better performance, but it helps create a more robust decision-making process.
The challenge of diversity in finance
Despite these benefits, diversity in finance is progressing slowly. The industry is still largely homogeneous in certain key roles, particularly in investment committees and senior management positions.
Several changes are needed to move towards greater equality and diversity.
1. More transparent career paths
Many women enter the financial industry, but they become rarer the higher you go up the ladder. In the Swiss companies studied in the University of St. Gallen's Gender Intelligence Report (2024), women hold only about a fifth of top management positions.
More transparent promotion processes and fairer progression policies can help reduce this effect.
2. A change in leadership culture
The industry has long valued a single style of leadership, often associated with assertiveness and being available at all times.
Yet decision-making under uncertainty also requires:
- listening
- long-term thinking
- emotional intelligence
These qualities are essential in a sector where decisions have major consequences. Listening to a contrary opinion gives you a chance to spot a mistake before it becomes expensive. In a committee, the person who voices their doubts often does the whole group a favour.
3. Making financial education a priority
When people talk about gender equality in finance, they mostly think of boards of directors and executive committees. Yet the question does not stop there.
It also concerns whether individuals feel entitled to invest, negotiate and make financial decisions, an issue at the heart of women's financial independence.
Financial education therefore plays a central role in helping everyone develop the confidence and understanding they need.
The role of financial education
At AdvisorOne Academy, we regularly see how much understanding money can transform the relationship a person has with their financial decisions.
When people gain clarity about their financial situation and their choices, they make calmer and more structured decisions.
The aim of financial education is not to turn everyone into a market expert.
Above all, it aims to help people:
- understand how finance works
- ask the right questions
- make informed decisions
This mechanism does not only concern investment committees. It also exists within a household. In some couples, only one person manages the savings and investments, and the other ends up no longer asking questions.
Decisions are then made without contradiction, just as in a committee that is too homogeneous. Understanding the basics allows everyone to take part in the choices, ask the right questions and stay in control of their own financial future.
Conclusion
In investing, as in many other areas, the quality of decisions rarely depends on a single factor.
It rests on a balance between analysis, experience and the confrontation of different points of view.
Encouraging diversity in investment teams is not simply about ticking a governance box. It means recognising that financial decisions improve when several perspectives meet.
To take a first step today, think back to your last important financial decision. Who did you talk to about it, and who could have challenged you?
Seeking another point of view is not an admission of weakness. It is an investor's reflex.
To get started: the Academy's Foundations programme, free, helps you lay solid foundations so you can decide with more clarity.
To go further: WomenInvest, the Academy's financial education programme designed for women, gives you the knowledge, tools and confidence you need to understand your money.
FAQ
What is an investment committee?
It is the group of people who decide how money is invested within an asset management firm, a bank or a pension fund. It sets the broad direction, approves or rejects proposals and monitors risks. Its make-up matters: this is where debates take place, or fail to, before every important decision.
Does diversity guarantee better performance?
No. Recent studies show a link between diversity and better decisions, but none of them promises an automatic result. A diverse team can get things wrong, and a homogeneous team can succeed. Above all, diversity improves the process, with more questions, more contradiction and fewer rushed decisions, and past performance never guarantees future results.
Which cognitive biases influence investment decisions the most?
Several come up often. Overconfidence leads you to overestimate your own analyses, and the disposition effect leads you to sell winning shares too early and hold on to losing ones for too long. Confirmation bias makes you look for information that proves you right. These biases affect everyone, professionals included, and an outside view often helps to spot them.
How can an individual investor limit their own biases?
By setting rules before acting. Write down why you are investing and under what conditions you would sell, and step back before any important decision, especially when emotions are running high. Then test your idea on someone who thinks differently. Wanting the perfect moment is also a common bias, and waiting for the right time to invest is a frequent example.
⚠️ Important notice ⚠️
The information presented in this article is provided for purely informational and educational purposes. It does not in any way constitute a personalised recommendation, investment advice, an offer or a solicitation to buy or sell financial products.
Any investment decision should be made after a thorough analysis of your personal situation, your objectives and your risk profile, and may require the advice of an authorised financial adviser.
Past performance is no guarantee of future results. Investments involve risks, including the risk of capital loss.