Hard lessons from seasoned investors

Mistakes are inevitable in the stock market, whether you're a retail investor starting out or a legendary investor with decades of experience. The market has a way of humbling even the giants.

In this story, we explore some of the most common mistakes made by prominent investors. Why study them? Because, as Charlie Munger famously said, "You must learn from the mistakes of others. You can't possibly live long enough to make them all yourself."

We have analysed these errors in depth and provided real-world examples to illustrate them.

Cheapness ≠ value

While a low P/E ratio is always preferred, it does not always mean that the company is cheap. Valuations are driven not by market multiples but rather the underlying fundamentals. For instance, Mishtann Foods consistently posted negative operating cash flows, despite declaring profits. Trade receivables ballooned to 97 per cent of total assets, suggesting sales weren’t translating into actual cash. Auditors raised concerns about inventory valuation and lax verification practices. As investigations deepened, issues like circular trading, non-existent entities, and inflated financials came to light. The promoters even cut their stake during the chaos. And the shocking part? It was trading at a modest P/E ratio of 5x before the chaos.

Retail and institutional investors were left stunned as the stock crashed — a reminder that flashy numbers don’t guarantee substance. When fundamentals look “too good to be true,” it often means they are.

Misreading sector shifts

No matter how good a company is, a poor fate of its sector or industry will always drag the company’s fortunes down. Take the paper industry for example, as the world moved online post-covid with both educational and official works transitioning, the demand for writing and printing paper segments fell significantly. This is not a cyclical but a secular change in the making. Several companies in the industry have excellent numbers but returns? Poor.

Take Andhra Paper. With a P/E of 18 and a 5-year median ROCE of 18 per cent, it might look appealing on paper. But the reality is less flattering. The writing paper segment — its core business — is projected to grow at just 1 per cent annually till 2029. Despite capacity expansion and integration efforts, the company’s sales volumes have stagnated since FY18. Its recent foray into tissue paper hasn’t yet moved the needle. The stock, as a result, has given a paltry annual return of 4 per cent over the last decade.

The lesson: sector-level headwinds can overpower company-specific strengths. Ignoring structural transitions in consumer behaviour — like the move from paper to digital — can prove costly.

Misplacing trust in management

A trusted promoter group can offer comfort, but blind faith can be costly. The Tata Group, one of India’s most respected business houses, provides a cautionary tale through Tata Steel’s Corus acquisition.

In the mid-2000s, Tata Steel was a rising star, clocking 26 per cent annual revenue growth between FY05 and FY07. But in 2007, it made a poor capital allocation decision with its $12.1 billion acquisition of UK-based Corus Steel—the largest outbound deal by an Indian company at the time.

Funded partly by Rs 26,580 crore in debt, the acquisition pushed the company’s debt-to-equity ratio to dangerously high levels. While capacity and revenue surged, the timing was unfortunate. The 2008 global financial crisis hit demand, particularly in Europe. Chinese steel oversupply and high UK energy costs further compounded the pressure.

The result? A decade of weak profitability and elevated interest costs. Between FY08 and FY20, revenue grew at just 1 per cent annually, and the stock delivered a 10-year annualised return of merely 2.6 per cent.

Even a management team with a strong track record must be monitored closely. Capital allocation and strategic decisions deserve continuous scrutiny, not a free hand.

Chasing perfect businesses

We always wish to find the perfect companies, the ones with high ROCE, rapid sales growth, spotless balance sheets and leadership in its respective segment. The issue here is that most such companies are discovered and command premium valuations. More than excellent numbers, in the past it is the sectoral tailwinds that have contributed the most to returns.

We analysed all listed Indian companies (excluding BFSI) with a market cap above Rs 500 crore. Of the 398 that delivered annualised returns above 20 per cent over the past 10 years, 51 per cent had a 10-year median ROCE below 15 per cent. In fact, 30 per cent had ROCE below 10 per cent. Similarly, 78 per cent of them grew sales at less than 15 per cent annually, and 47 per cent grew at less than 10 per cent.

Take The Indian Hotels. Over the past decade, it clocked just 7 per cent annual sales growth and an 8 per cent median ROCE. Yet, the stock compounded at 24 per cent annually. The driver? A focused turnaround led by Puneet Chhatwal and industry tailwinds post-Covid, marked by debt reduction, a shift to an asset-light model, sharper brand segmentation, and operational discipline. Imperfection, clearly, isn’t a dealbreaker.

The goal isn’t to avoid great businesses, but to stay open-minded — even imperfect companies can deliver if the valuation is right and the opportunity is real.

Chasing momentum blindly

Momentum can be a powerful force, but it is no guarantee of permanence. In investing, many mistake momentum with inevitability: if a stock is rising, it must continue to rise. But markets don’t follow the laws of physics.

Our analysis of stocks that doubled in value over a single year—going as far back as FY15—reveals a sobering truth. After their sharp rallies, these temporary heroes mostly underperformed the market in each subsequent year. More importantly, the chances of losing money in momentum stocks are around 50 per cent, with nearly half posting negative returns during their assessment years.

Take 2005, when the BSE Power Index was launched amid a frenzy for power and infrastructure stocks. Investors rushed in, convinced the rally would never end. Then came 2008. The sector crashed, and the index took nearly 15 years to return to its previous highs.

Momentum works—until it doesn’t. Chasing it blindly is risky. But doing so without assessing the underlying fundamentals can prove even more expensive.

Delaying exits from laggards

FMCG stocks have long been seen as safe havens—steady, defensive, and ideal for weathering market storms. But what happens when the growth story slows, and investors continue to hold on, driven by habit or misplaced optimism?

Companies like Hindustan Unilever, Dabur, and Marico continue to trade at elevated valuations—P/E ratios ranging from 49 to 75—despite anaemic performance. Over the past three years, most have posted only single-digit growth in sales and profits. Dabur’s profit growth is even negative. Yet, investors remain firmly attached.

Why? Because these companies once delivered the rare combination of stability and strong growth. But after decades of expansion, many appear to have reached a saturation point. With market penetration largely complete, they are now turning to inorganic growth through acquisitions.

Holding on to past winners without reassessing fundamentals can be a costly mistake. Sometimes, the real risk lies not in volatility but in stagnation.

Before you leave

Every investor makes mistakes—the key is not to repeat them. The market doesn’t punish imperfection, but it does punish ignorance and rigidity. The missteps we’ve explored aren’t rare—they are recurring patterns that have trapped even seasoned investors. Recognising them is the first step towards compounding not just wealth, but wisdom.

At Value Research Stock Advisor , we combine data, discipline, and experience to help you sidestep these pitfalls. Our framework isn’t just about finding the right stocks—it’s also about avoiding the wrong ones.

Also read: Is Yatharth the next breakout in healthcare?

This article was originally published on June 28, 2025.