Dr Dhiraj reveals 10 deadly investing mistakes on DifferentTruths.com—chasing returns and panic selling—that sabotage even smart strategies.

After discussing in detail the fundamentals of investing—different asset classes, mutual funds, asset allocation and the importance of rebalancing—in the earlier columns, many investors naturally begin to feel that they are on the right path. The framework appears clear, the structure seems sound, and the approach feels disciplined. Yet, in practice, long-term financial outcomes are often shaped not just by what investors do right but also by the mistakes they unknowingly make along the way. Investing is not only about knowledge; it is equally about behaviour. Recognising common pitfalls becomes essential because even well-informed investors can make decisions that quietly undermine their long-term goals.

Mistake 1: Chasing Past Returns

One of the most common patterns in investing is chasing what has already performed well.

When a particular mutual fund or sector delivers high returns, it attracts attention. Investors enter after the rally, expecting similar performance to continue. However, markets rarely move in straight lines. By the time an investment becomes popular, much of the upside may already be priced in.

For example, investors who rush into a high-performing mid-cap or sector fund after a strong rally often face disappointment when returns normalise. Good investing is not about chasing what has already happened—it is about aligning with long-term potential.

Mistake 2: Panic Selling During Market Declines

Market corrections are inevitable. Yet, many investors respond to falling markets by selling their investments. This reaction is driven by fear, not strategy.

When markets decline, selling converts temporary losses into permanent ones. In contrast, investors who remain invested often benefit when markets recover. This pattern has repeated across multiple market cycles. Those who exit during downturns frequently miss the recovery phase, which tends to be sharp and unpredictable.

Mistake 3: Ignoring Asset Allocation

Some investors focus heavily on selecting individual funds or stocks but ignore how their money is distributed across asset classes. A portfolio heavily concentrated in equity may perform well during bull markets, but it can also lead to significant stress during downturns.

Without proper allocation across equity, debt, gold, and liquidity, portfolios become unbalanced and difficult to manage emotionally.

Asset allocation is not optional—it is foundational.

Mistake 4: Over-Diversification

Diversification is important, but excessive diversification can dilute returns. Many investors end up holding too many mutual funds—sometimes five, six, or even more funds with overlapping portfolios. This creates complexity without meaningful benefit.

Instead of improving returns, over-diversification often leads to average performance and confusion. A well-structured portfolio does not need excessive components—it needs clarity.

Mistake 5: Stopping SIPs at the Wrong Time

Systematic Investment Plans (SIPs) are designed to work across market cycles. However, many investors stop their SIPs during market downturns. Ironically, this is when SIPs are most effective.

When markets fall, SIPs purchase more units at lower prices. These units contribute significantly to long-term returns when markets recover. Stopping SIPs during downturns disrupts this advantage.

Mistake 6: Lack of Liquidity Planning

Some investors invest aggressively without maintaining an emergency fund. When unexpected expenses arise, they are forced to withdraw from long-term investments, often during unfavourable market conditions.

Maintaining liquidity is not a conservative choice—it is a practical necessity. It protects long-term investments from being disrupted.

Mistake 7: Frequent Portfolio Changes

Constantly buying and selling investments based on short-term market movements can harm long-term returns. Frequent changes increase transaction costs, tax liabilities, and emotional stress. More importantly, they prevent the compounding process from working effectively.

Successful investing often requires patience more than activity.

Mistake 8: Confusing Risk with Loss

Many investors equate volatility with loss. A temporary decline in portfolio value is often perceived as a permanent loss, leading to premature decisions. However, volatility is a natural part of equity investing.

True risk lies not in temporary fluctuations, but in making decisions that permanently reduce wealth. Understanding this distinction is critical.

Mistake 9: Following the Crowd

Investment decisions are often influenced by social circles, media trends, or popular narratives. While collective enthusiasm can drive markets upward, it can also lead to overvaluation and subsequent corrections.

Following the crowd may feel comfortable, but it rarely leads to consistent outcomes. Independent thinking, guided by personal goals, is more reliable.

Mistake 10: No Clear Financial Goals

Perhaps the most fundamental mistake is investing without a clear purpose. Without defined goals—such as retirement, education, or wealth creation—investment decisions become reactive. Investors shift strategies frequently, influenced by market conditions rather than long-term objectives.

Clarity of purpose brings discipline to investing.

Why Do These Mistakes Matter?

Individually, these mistakes may appear minor. Collectively, they can significantly affect long-term outcomes. Investors often focus on finding the “best” investment, but avoiding common mistakes can be equally, if not more, important.

In many cases, the difference between successful and unsuccessful investors lies not in knowledge, but in behaviour.

Closing Thought

Investing is not a test of intelligence—it is a test of discipline. Markets do not reward the most informed or the most active investors; they reward those who can remain steady when uncertainty rises and resist the urge to react to every movement. Opportunities will always exist, but so will distractions, noise, and moments of doubt. At such times, patience, confidence, and sound judgement matter far more than prediction.

The real challenge in investing is not identifying the perfect opportunity but maintaining consistency in behaviour. It is about continuing a systematic plan when markets fall, resisting the temptation to chase quick gains when markets rise, and staying aligned with long-term goals rather than short-term emotions. Even simple strategies, when followed with discipline over time, often outperform complex strategies driven by impulse.

Equally important is the ability to avoid mistakes. Many investors lose not because they lack knowledge but because they act at the wrong time—buying out of excitement and selling out of fear. Avoiding such decisions quietly protects wealth and allows compounding to work uninterrupted.

Because in the long run, wealth is not built through occasional brilliance but through sustained discipline. It grows not only by what we choose to do but also, just as importantly, by what we choose not to do.

Picture design by Anumita Roy

Dr. Dhiraj Sharma

Dr Dhiraj Sharma is a faculty member in the Department of Management Studies at Punjabi University, Patiala. He has authored fourteen books and published over a hundred research papers, articles, and book-chapters in reputed national and international journals, books, magazines, and web portals. Beyond academia, he is a nature and wildlife photographer and a realistic and semi-impressionist painter.