
Recognize the biases. Overcome the mistakes.
The greatest enemy of a good investment plan is often the person who created it. The field of behavioural finance has shown that our brains are hardwired with emotional and psychological biases that can lead us to make irrational and detrimental investment decisions.
The key to long-term success is not just having a good strategy, but having the discipline to stick with it. Recognizing these common behavioural mistakes is the first step to overcoming them.
Herd mentality is the tendency to follow the actions of a larger group, regardless of your own analysis. In investing, this manifests as piling into a 'hot' stock or asset class after it has already had a huge run-up, and panic-selling when everyone else is.
This behaviour forces you to systematically 'buy high and sell low.' You get into an investment at the peak of the hype and sell out at the point of maximum pessimism, locking in losses.
A disciplined, pre-defined asset allocation and a regular rebalancing schedule. Your Investment Policy Statement (IPS) is your anchor against the pull of the herd.
Confirmation bias is the tendency to seek out and favour information that confirms your existing beliefs, while ignoring information that contradicts them. If you believe a certain stock is a great investment, you will gravitate towards articles that support that view and dismiss any that raise red flags.
This creates an echo chamber that reinforces your initial decision, preventing you from objectively evaluating new information. It can cause you to hold on to a losing investment for far too long.
Actively seek out dissenting opinions. For every bullish argument you encounter, find one that presents the bearish case. Working with a financial advisor provides an objective, outside perspective to challenge your assumptions.
Psychologically, the pain of a loss is about twice as powerful as the pleasure of an equivalent gain. Loss aversion is the tendency to go to great lengths to avoid realizing a loss, often leading investors to hold on to losing investments, hoping they will 'get back to even.'
This results in a portfolio of underperformers that you refuse to sell, anchored to their past purchase price rather than their future prospects.
Focus on the future, not the past. Ask yourself: 'If I had the cash in hand today, would I buy this investment?' If the answer is no, it's time to sell, regardless of whether you are at a gain or a loss.
Many investors believe they are better than average at picking stocks and timing the market. This overconfidence can lead to excessive trading, a lack of diversification, and taking on far too much risk.
Over-trading generates high transaction costs and taxes, which eat away at returns. A concentrated portfolio may have a great year, but it can also lead to catastrophic losses.
Humility. Acknowledge that you cannot predict the future and that the market is smarter than any single individual. Focus on what you can control: your savings rate, your asset allocation, and your own behaviour.
Recency bias is the tendency to give too much weight to recent events and to extrapolate them indefinitely into the future. If the market has been going up for three years, it's easy to assume it will keep going up.
This leads to pro-cyclical behaviour - becoming too aggressive after a bull market and too conservative after a bear market, exactly the opposite of what a disciplined strategy requires.
Take a long-term view. Study market history to understand that cycles are normal. A globally diversified portfolio and a disciplined rebalancing strategy are the best defences against being swayed by the market's latest mood.
One of the most valuable roles of a financial advisor is to act as a behavioural coach - a trusted partner who can help you navigate these emotional pitfalls and stick to your long-term plan.
At SG Wealth, we help our clients build a disciplined investment strategy anchored by a formal Investment Policy Statement (IPS) and, just as importantly, we provide the steady hand needed to see it through.
Explore our comprehensive investment planning in Canada services to get started.

Overcoming behavioural biases is one of the most valuable things a financial advisor can help you do.
Book a free consultation and let our team help you build - and stick to - a strategy designed for long-term success.