Long-Term Investing: Why Time Is Your Biggest Advantage

Long-term investing works because, over many years, share prices follow the growth in business earnings, and time lets compounding turn modest annual returns into large sums while the short-term noise cancels out. A long time horizon is the one edge every individual investor already has, and most of them waste it.

Investors spend huge effort looking for an edge in the present: better information, sharper analysis, cleverer timing. The edge they overlook costs nothing and cannot be bought: the patience to hold good businesses for a long time.

Where this fits: this article is part of the Start Here path. A long horizon is the philosophy behind the Five Criteria: buy quality at a sensible price, then let time do the work.

Why Long-Term Investing Works

This is not a motivational claim. It is arithmetic plus economics.

The arithmetic is compounding. Returns earned this year start earning returns of their own next year. The effect looks small at first and becomes enormous later.

The economics is that a share is part of a business. Over short periods, prices are driven by mood, headlines and money flows. Over long periods, they tend to follow what the business actually earns. Graham’s image, often repeated by Buffett, is that in the short run the market is a voting machine and in the long run it is a weighing machine.

An investor who holds a good business for twenty years will usually do better than one who trades in and out of the same business over those twenty years. Not because they are smarter, but because they avoid trading costs, tax drag and badly timed decisions, and let compounding run uninterrupted.

Time Changes What Risk Looks Like

The usual view is that stocks are risky because they are volatile. That is fair over one year and increasingly misleading over twenty.

Looking at the history of the US stock market since the 1920s, single calendar years have ranged from losses of more than 40% to gains of more than 50%. Over rolling ten-year periods the range narrows a lot. Over rolling twenty-year periods, the broad US market has historically delivered a positive total return every time.

That is history, not a guarantee. Other markets have had longer droughts, and the future can differ. But there is a sound reason behind the pattern: the combined profits of a large economy’s businesses tend to grow over time, and prices eventually follow profits.

The lesson is that much of what feels like risk, such as the anxiety of a falling portfolio or the fear of buying at the wrong moment, is a short-term feeling. At Gingernomics we define risk as the permanent loss of capital, not volatility. With a long horizon and quality holdings, most volatility is noise.

The Behaviour Gap: How Investors Waste Their Advantage

Research into investor behaviour, such as Morningstar’s annual “Mind the Gap” studies, has repeatedly found that the average fund investor earns less than the funds they own. The funds’ returns are there to be had. Investors miss part of them by buying after strong gains and selling after falls.

In other words, the problem is rarely what people own. It is how impatiently they own it. An investor who commits to holding quality businesses for five years or more, without reacting to every move, avoids the behaviour that damages most investors’ returns. We cover this trap in detail in why most beginners fail at investing.

“Our Favourite Holding Period Is Forever”

In his 1988 shareholder letter, Buffett wrote that when Berkshire owns portions of outstanding businesses with outstanding managements, “our favorite holding period is forever.” The line is quoted as proof of his patience, but the deeper point is structural.

A great business that can reinvest its profits at high returns becomes more valuable every year. Holding it lets that growth compound. Selling it, even at a profit, stops the compounding and usually triggers tax.

Notice the conditions in Buffett’s sentence: outstanding businesses and outstanding management. Forever applies only to companies that keep passing the test. It is not a reason to hold a business whose quality has faded.

Worked example: Company F held vs traded

Company F is a hypothetical business that grows its value by 15% a year for twenty years. Two investors each put $10,000 into it.

The holder	The trader
Strategy	Buys once, holds 20 years
Assumed annual return after costs and tax	15% (tax only at the end)
Value after 10 years	about $40,000
Value after 20 years	about $164,000

Same business. Same underlying return. The trader ends up with roughly half, purely from interrupting the compounding. The holder also owes tax when they eventually sell, but paying it once at the end still leaves them far ahead. And this example assumes the trader times every trade perfectly, which in practice nobody does.

The numbers also show how compounding back-loads the rewards. A business growing at 15% roughly quadruples in ten years, grows about sixteen-fold in twenty and around sixty-fold in thirty. Year one looks dull. Year twenty-five looks extraordinary. Try your own figures with our investment calculators.

The Structural Edge Individual Investors Already Have

Professional fund managers work under pressures you do not face:

• They report to clients every quarter.
• They risk their careers if they lag the market for a year or two.
• They often must stay fully invested and cannot simply wait in cash.
• Many cannot buy smaller companies without moving the price.

So a professional who underperforms for two years may face withdrawals and be forced to sell, even if the long-term case is intact. You can hold a great business through two disappointing years if the thesis still holds.

Having worked in investor relations, I have seen how strongly the market reacts to a single quarter’s results. For a patient owner, those reactions are often opportunities rather than threats. Our article on using short-term price movements to your advantage shows how.

In a market dominated by short-term thinking, patience is not just a virtue. It is a real competitive advantage.

How We Use This in the Five Criteria

A long horizon only works if you own businesses that are still worth owning in ten years. The Five Criteria is designed to find them:

#	Criterion	Why it matters for long-term investing	House default threshold
1	Great business	High returns on capital are what compound	ROIC of 15%+ for 5+ years; FCF at least 90% of net income
2	Durable moat	Protects those returns over decades	A clear moat source; ROIC held through a downturn
3	Aligned management	Reinvests profits wisely instead of wasting them	Share count flat or falling; meaningful insider ownership
4	Sound balance sheet	Lets the business survive the bad years you will hold through	Net debt/EBITDA of 2.0x or less; interest coverage of 5x+
5	Reasonable price	A good starting price lifts every future year’s return	FCF yield of 5%+ or 25%+ below conservative intrinsic value

Time amplifies whatever you own. Own quality at a fair price and time works for you. Own a weak, indebted business and time works against you.

Common Mistakes With Long-Term Investing

• Confusing long-term with never checking. Read the annual report and quarterly results. Hold as long as the thesis holds, not blindly.
• Holding a broken business “for the long term”. Patience is a virtue only with businesses that still pass the Five Criteria.
• Ignoring the starting price. Overpaying can wipe out years of business growth. Time does not rescue every price.
• Investing money you need soon. A long horizon only applies to money you will not need for five years or more.
• Reacting to every headline. Short-term moves are mostly noise for a long-term owner.

Your Next Step

Put your time horizon to work. Learn how to pick businesses worth holding with the Five Criteria, and if you are just starting out, follow the beginner’s guide to investing in stocks. Then read why investing is not an option to see what waiting really costs.

---

About the author: Cameron Hayes is a senior investor relations and finance professional who has worked in IR at Nasdaq Copenhagen-listed companies including Nilfisk and Maersk Drilling. He holds an MSc from Copenhagen Business School and a BCom from the University of Ottawa, and founded Gingernomics to teach individual investors the Five Criteria framework. More about Gingernomics.

The content on Gingernomics is for educational and informational purposes only and does not constitute financial advice. Always do your own research and consult a licensed financial advisor before making any investment decisions. Past performance is not indicative of future results.