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Writer's pictureFrants Preis, CFA, CAIA, CFP

6 Common Investor Biases You Should Know

Updated: Oct 1

In the labyrinth of investment decisions, even the most experienced investors can find themselves ensnared by cognitive traps.


These mental blind spots, known as investor biases, can lead us astray, clouding judgment and distorting reality. It is imperative for investors to recognize and combat these biases to navigate the markets effectively.


Let's shed light on six of the most prevalent investor biases.


Confirmation Bias: Picture this: you are bullish on a stock, so you eagerly devour news articles and analyst reports that validate your optimism.


Meanwhile, you conveniently overlook any contrary evidence that might challenge your stance.


This is confirmation bias at play – the tendency to seek information that confirms our existing beliefs while disregarding conflicting data.


Loss Aversion: The pain of a loss exceeds the joy from an equal gain. Investors afflicted with loss aversion may hold onto losing investments for too long, hoping they will bounce back to breakeven, rather than cutting their losses and reallocating capital to more promising opportunities.


Anchoring Bias: Ever fixated on a particular price point, even when it no longer holds relevance? That is anchoring bias in action. Investors often anchor their expectations or valuations to past or arbitrary reference points, blinding themselves to new information or changing market dynamics.


Overconfidence: Confidence can be a double-edged sword in investing. While a healthy dose of self-assurance is essential, overconfidence can lead investors to take excessive risks or overestimate their ability to outperform the market.


Remember, humility is often the hallmark of successful investing.


Recency Bias: Short-term memory tends to dominate our perceptions, causing us to place undue emphasis on recent events while overlooking historical context. In investing, this manifests as recency bias – the tendency to extrapolate recent trends into the future, potentially ignoring long-term fundamentals.


Herding Mentality: Humans are social beings, wired to seek safety in numbers. This instinctual urge (otherwise known as FOMO, or fear of missing out) can manifest in investing as the herding mentality, where individuals follow the crowd rather than conducting independent analysis.


Yet, blindly following the herd can lead to market bubbles or panics, rather than rational decision-making.


Recognizing these biases is the first step towards mitigating their impact on investment outcomes. By cultivating self-awareness, diversifying portfolios and seeking diverse perspectives, investors can inoculate themselves against the pitfalls of cognitive bias.


Seek to embrace rationality, question assumptions and dare to tread the path less travelled. Your wealth deserves nothing less.

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