If you’re like most people and don’t have the time or interest to analyze businesses, index investing works extremely well. In that case, you can safely skip the rest of this article and probably spend your time on something more productive.
If, however, you do enjoy studying companies and thinking about capital allocation, then individual stock selection may be for you. But it’s important to be honest about one thing upfront:
Investing is hard.
There’s a reason very few people (including professional money managers) outperform the market over long periods of time.
Why?
1) Emotions
You must have the temperament to endure volatility without reacting emotionally. This is far easier said than done.
When stock prices fall, investors are constantly bombarded with headlines predicting recessions, market crashes, or imminent interest-rate hikes. You’ll be faced with negative news headlines, analysts downgrading your stock, and dealing with your own emotions. Usually, the best time to buy is when market pessimism is at a peak.
Even investors with solid investment theses often sell at precisely the wrong time simply because short-term price movements overwhelm long-term logic.
2) Portfolio Construction
We’re taught that diversification is always good—and for most people, it is.
Diversification makes sense if your goal is wealth preservation or if you don’t have the time or desire to deeply analyze individual companies.
But if your objective is to outperform the market, broad diversification works against you. This isn’t an opinion—it’s simple math.
A widely diversified portfolio has a very low probability of meaningfully outperforming a market index over time.
To outperform, you must allocate more capital to your highest-conviction ideas.
Here’s a simple illustration - assume you bought one stock and the rest of your portfolio was in cash:
If a stock makes up 2% of your portfolio and it doubles, your portfolio would be up 2%.
If that same stock is 15% of your portfolio and it doubles, your portfolio would be up 15%.
That’s a meaningful difference.
Of course, the downside is symmetrical. A 15% position going to zero results in a 15% portfolio loss.
Some might say that’s too risky.
Paradoxically, this is why concentration can lead to better long-term results. When the stakes are higher, investors are forced to think much harder about downside risk, balance sheet strength, and the durability of the investment thesis.
“We believe that a policy of portfolio concentration may well decrease risk if it raises, as it should, both the intensity with which an investor thinks about a business and the comfort-level he must feel with its economic characteristics before buying into it”.
- Warren Buffett
Ask yourself:
Would you put 20% of your portfolio into a business you don’t understand or lack conviction in? Of course not.
Yet many investors are perfectly comfortable allocating a percentage of their portfolios to companies they don’t truly understand, not because the risk is acceptable, but because they don’t want to miss the next hot electric vehicle IPO that might turn into another Tesla. In my experience, these speculative types of investments don’t work out very well.
Over-diversification often leads to diluted returns because it’s impossible to know 30 or 40 companies well.
3) Paying Too Much for Stocks
This one seems obvious, yet investors repeatedly ignore it.
Consider Palantir, which trades at roughly 259x forward earnings.
Even if Palantir were able to grow earnings at 20% annually for the next decade—an extremely difficult feat—and you sold the stock at 50x earnings ten years from now, your annualized return would only be about 2%.
That assumes:
Exceptional execution
No major competitive disruption
A still-lofty valuation multiple
If the terminal P/E multiple were 30x instead of 50x, long-term returns would likely be negative.
Palantir is an extreme example, but it illustrates an important point: so-called “high-quality growth stocks” can be extraordinarily risky when purchased at excessive prices. The probability of permanent capital loss rises sharply when expectations are already priced to perfection.
Finally, what gets discussed far less is a simpler, and arguably more important, truth:
4) Most stocks are bad investments.
Not because markets are irrational, but because the economics of most businesses are stacked against long-term shareholders. They may be businesses that add value for their customers and employees but many fail to add (or even destroy value) for the shareholders over the long-term.
Avoiding these structural losers has been just as important to my long-term results as finding winners.
Most Stocks Underperform — And a Few Do All the Work
A small minority of stocks generate the majority of long-term market returns.
The median stock:
Doesn’t meaningfully outperform Treasury bills
Over long periods of time, broad stock market indexes have delivered roughly 8–10% annual returns before inflation, while the current 10-year Treasury yield is around 4%. Because a relatively small number of companies account for the majority of total index returns, it follows logically that most individual stocks don’t meaningfully outperform even low-risk U.S. Treasuries.
Often never recovers to prior highs after a major decline
Consider this. If a stock falls 50%, then it must gain 100% (2x return) just to get back to even. If a stock falls 80%, then it must gain 400% (5x return), just to get back to even. Clearly, chasing momentum and hype doesn’t work and the risk of buying pricey stocks with no underlying earnings power or balance sheet strength greatly increases the risk of permanent capital loss.
Index investing works because it owns everything, including the rare outliers that generate enormous returns.
Stock picking, by contrast, is mostly about elimination — systematically avoiding businesses that are mathematically unlikely to create long-term shareholder value.
Five Types of Stocks That Quietly Destroy Capital
Over time, I’ve noticed that permanent capital loss tends to cluster around a few repeatable business models.
1. High Leverage + Cyclicality
Debt magnifies outcomes, and cyclicality guarantees stress at the worst possible time.
Examples include:
Airlines
The airline industry is an industry I avoid for several reasons. Mainly, it’s highly cyclical, and profitability depends on macroeconomic factors such as oil prices and travel demand. Moreover, the airline industry is brutally competitive, and most airlines have thin margins. No airline really has any sort of competitive advantage, and the industry is highly capital intensive.
Per Berkshire Hathaway’s 2007 annual report, Warren Buffett wrote:
“The worst sort of business is one that grows rapidly, requires significant capital to engender the growth, and then earns little or no money. Think airlines. Here a durable competitive advantage has proven elusive ever since the days of the Wright Brothers. Indeed, if a farsighted capitalist had been present at Kitty Hawk, he would have done his successors a huge favor by shooting Orville down.”
Shipping companies
Shipping companies are similar to airlines because they have high fixed costs, are prone to economic cycles and really have no competitive advantage
Highly levered REITs
Commodity producers - In a “commodity industry” such as energy or mining, the low-cost producer will win because they can usually remain profitable through downturns. Energy or mining companies with high debt and no cost advantage will be at much higher risk of insolvency during industry slowdowns.
These businesses may look cheap at cycle peaks but often require repeated recapitalizations. Equity holders are diluted or wiped out long before the cycle turns.
2. Capital-Intensive Businesses with Low Returns
Some companies consume enormous amounts of capital just to maintain their current position. Again, “The worst sort of business is one that grows rapidly, requires significant capital to engender the growth, and then earns little or no money.”
Warning signs of capital-intensive businesses include:
High maintenance capital expenditures
Low returns on invested capital
Minimal free cash flow through the industry cycle
In these cases, reported earnings can be misleading. The business may survive for decades while steadily transferring value from shareholders to creditors, suppliers, and employees.
3. Serial Diluters
Dilution is one of the most underappreciated destroyers of shareholder value.
Common patterns:
When stock-based compensation exceeds free cash flow, shareholders are effectively paying employees with their own capital. Companies often mask this dilution by buying back stock, but these repurchases don’t create value—they merely tread water. Over time, markets tend to punish companies that rely heavily on this approach unless they create huge amounts of value.
Repeatedly raising new equity
Management teams compensated regardless of per-share results. Because many executives are compensated based on revenue and EPS growth, they often prioritize increasing reported earnings instead of generating durable free cash flow—the metric that actually drives long-term shareholder value.
In Amazon’s 1997 letter to shareholders, Jeff Bezos stated:
When forced to choose between optimizing the appearance of our GAAP accounting and maximizing the present value of future cash flows, we’ll take the cash flows.
Even businesses with growing revenue can destroy value if per-share economics deteriorate over time.
4. Financial Engineering Disguised as Growth
Some companies rely on:
Roll-up acquisitions
Aggressive leverage
Adjusted metrics that exclude real costs
These models can work briefly in favorable markets but tend to unravel when capital tightens. When growth depends on constant access to cheap financing, shareholders are assuming refinancing risk whether they realize it or not.
5. Poor Management Incentives
This is the hardest risk to quantify but often the most damaging.
Red flags include:
Empire building M&A - as previously mentioned, oftentimes executive teams are compensated on increasing revenues and EPS and thus may be incentivized to pursue mergers and acquisitions that are not always in the best interests of shareholders.
Incentives tied to size rather than per-share value
Persistent underperformance with no accountability
Bad incentives compound over time and rarely fix themselves without external pressure.
Estimating the Probability of Permanent Capital Loss
Rather than forecasting upside first, I try to estimate downside.
Key questions I ask:
How long can this company survive if conditions worsen?
What happens if revenue decline significantly (say 20% or more)?
How real are the assets on the balance sheet? What is their realistic, conservative liquidation value?
How fast is working capital being consumed?
Does time work for or against shareholders?
Companies with:
Low debt
Strong interest coverage ratios
Real, liquid assets
Positive free cash flow
…tend to have a far lower probability of permanent capital impairment.
Why “Cheap” Isn’t Enough
Many stocks look statistically cheap but are economically fragile. A lot of “cheap stocks” are cheap for a reason. One of the chief concerns for a value investor is avoiding “value traps.”
A low price to earnings ratio or a discount to book value does not create a margin of safety if:
Assets are illiquid or overstated
Cash burn is persistent
High debt levels and upcoming maturities force restructuring
True margin of safety comes from both financial resilience and balance sheet strength, not just valuation multiples alone.
What Actually Works (And Why It’s Boring)
The investments that tend to work over long periods share a few traits:
Conservative balance sheets
Rational capital allocation
Businesses that produce excess cash far in excess of maintenance capex requirements
Prices that are well below intrinsic value and already reflect pessimism
These setups rarely look exciting, but they allow time and compounding to work in the investor’s favor rather than against them.
Why I Prefer Fewer Investments - Quality Over Quantity
Deep value strategies often require broad diversification because individual outcomes are highly uncertain.
My approach is different.
I prefer:
Fewer positions
Deeper understanding
Clear downside protection
High expected IRR with conservative assumptions (at least 15%)
This naturally leads to a portfolio that emphasizes capital preservation first and upside second.
Final Thought: Avoiding Zeros Compounds Faster Than Finding 10x Ideas
You don’t need extraordinary winners to succeed.
You need:
Fewer catastrophic losses
Fewer permanent impairments
More situations where survival is not in question
In the long run, not losing money is one of the most powerful forms of alpha.
What I keep coming back to is how many good ideas fail because the process breaks, not the analysis.
Concentration raises expected returns and emotional volatility at the same time—and most people only plan for one of those.