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The Krest Test · Coffee Can
We took it to Krest.

The Coffee Can portfolio crushed the market. It has also never seen a bad one.

Marcellus's Coffee Can idea, buy wonderful companies and simply hold them, has a spectacular record on Indian data. We ran it, and it beat the market by ten points a year. Then we looked at the dates, and the record started to look less like proof and more like a warning.

Educational6 min readNifty 500 · 2020 to 2025
₹10 lakh in the Coffee Can, since 2020
Growth of the portfolio · vs Nifty 500 ↗ See it live on Krest
Broad basketTop 30Top 10Nifty 500

Ten lakh rupees run through the screen since 2020 grew to about ₹43.7 lakh. The same money in a plain Nifty 500 index fund grew to about ₹29.9 lakh. Over its run the strategy compounded at roughly 34 percent a year against the market's 24.5 percent, an enormous margin, and it did it with a shallower fall along the way. On every count an investor cares about, it won.

It is the kind of chart that sells a strategy. So before you are sold, read the one thing that chart is quietly telling you: the dates on the bottom axis.

Now look at the dates

That chart begins in June 2020, at the very bottom of the COVID crash, and ends in 2025. Five years, and not one of them a real bear market. The Coffee Can, as tested here, was born at the perfect moment and has lived its entire life inside the strongest bull run in a generation. It has never once been asked the only question that ultimately matters: what happens when the market falls and stays down.

The edge was really two years

Break the run into calendar years and that spectacular average dissolves into a couple of extraordinary ones. In 2020 and 2021, riding the rebound, it returned 62 and then 115 percent. Take those two years out and what remains is ordinary: it lagged the market in 2022, again in 2024, and again in 2025. The ten point a year edge was not a steady drumbeat of skilful picking. It was two moonshots, and then a strategy that mostly kept pace or fell behind.

Year by year: the screen vs the market
Calendar year return · top 30 vs Nifty 500
Coffee CanNifty 500

A gentle fall, in a market that never truly fell

Its worst drop was about 32 percent, milder than the screens that lived through 2018 and 2020 in full. That reads like safety. It is not. A shallow drawdown inside an uninterrupted bull market is not evidence of resilience; it is the absence of a test. We simply do not know how this screen behaves in a crash, because it has never been in one.

How far below its own peak it fell
Drawdown · top 30 · vs Nifty 500
Coffee CanNifty 500
~34%
a year over the run, versus the market's ~24.5%
5 yrs
of history, every one inside a bull market
0
bear markets survived · the test that has not happened

The range, in a very short sample

Even across this brief history the one year outcome swung widely, from a 15 percent loss to nearly doubling your money, depending on the month you began. But notice how few independent windows there are: a handful of overlapping stretches, all inside the same boom. Treat every number on this page as drawn from a sample of one very good market.

Return by the month you happened to start
Each bar = one start date · held one year · top 30
Coffee CanNifty 500
Same screen, same rules. In this short, kind sample even the weak windows rarely lost much.

What it actually owned

The screen leaned on a familiar cast of quality names, holding some for most of its short life, and tilted toward materials, technology and industrials. A reasonable, recognisable portfolio, which is part of the point: it looks sensible, it performed brilliantly, and none of that tells you how it survives a market that finally turns.

The stocks it kept buying
Share of yearly rebuilds each name survived
Where the money sat · average sector weight
The full teardown

There is more the average hides. In the deep dive we test whether the ranking actually sorted good companies from bad in this window, what concentrating into the very best names did, and why the whole edge traces back to a single factor firing in a single boom. Short version: even here, the screen won by luck of timing more than skill of selection.

Read the full teardown

The most dangerous backtest is a short, winning one

None of this means the Coffee Can is a bad idea. Marcellus may well be right, and quality may well compound. But a five year record set entirely inside a bull market is the single most seductive and least reliable kind of evidence there is. It shows a strategy at its best and hides the only thing you truly need to know, which is how it behaves when things go wrong. The number to distrust is the amazing one. The only way to earn real conviction is to test an idea across history that includes the bad years, not just the good.

Give it the test it never had

The one thing this record cannot show you is a falling market. On Krest you can run the same screen across the years that hurt, and move the settings its defenders argue about, tighter quality, looser concentration, longer holds, to see which of them, if any, survives a downturn. The amazing number is the one to distrust.

So we took it to Krest, and ran it through the whole test.

KREST TESTED · RUN ON REAL HISTORY ·
Method mark
Krest Tested
We ran the Coffee Can screen through the test on its full history. The rigour is ours; the verdict is yours.

Free · no account needed

Test before you trust.

Don't take our word for it. Every figure on this page came from a few clicks on Krest, and each one is a click from the full, live analysis. Reading and exploring is free.

For education only. Not investment advice or a recommendation to buy, sell, or hold any security, strategy, or product. Past performance does not guarantee future results, and all investing carries risk, including the possible loss of capital. Make your own decisions, and consider consulting a SEBI registered investment adviser.

Best effort analysis. Prepared on a best effort basis from historical data and may contain errors, omissions, or assumptions. Shared for information and discussion only, and should be independently verified before you rely on it. Krest accepts no liability for any decision made or loss incurred based on it.

Figures reflect a quality screen in the Coffee Can spirit (rank by return on capital, keep companies above roughly fifteen percent return on capital, above ten percent sales growth, consistently profitable, market cap above ₹100 cr), reconstructed yearly, over its available history since June 2020, measured against the Nifty 500 total return index. This is a five year sample set entirely within a bull market.

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