Why the Multiple Doesn’t Have to Fall

The single most useful idea Fisher left us is also the most misunderstood: paying a premium multiple for a wonderful business is not the blunder conventional wisdom insists it is.

Here is the standard warning you’ll hear everywhere. “That stock trades at 35 times earnings (a P/E of 35). The market average is about 15. Sooner or later it will revert to the mean — the multiple will collapse toward 15, and you’ll lose money even if the business does fine.” It sounds like iron logic. For most companies it even is. But for a small, special class of businesses it is quietly, expensively wrong.

What the mean-reversion story leaves out

A price-to-earnings multiple is really a statement about the future: it is what investors will pay today for a claim on earnings they expect to keep growing. A multiple “reverts to 15” only when the market stops believing the company can keep growing faster than average. So the real question is never “is 35 too high?” in the abstract. It is: how long can this business keep growing at a superior rate — and how sure are we?

For an ordinary company the honest answer is “not long,” and the multiple duly falls. But for a business protected by a genuine economic moat — a brand no rival can dislodge, a network that strengthens with every user, switching costs that quietly hold customers in place — the superior growth does not fade on Wall Street’s impatient schedule. It persists. Five years out, the company is still growing; investors looking from year five toward year ten still see a bright future, and so they still assign a premium multiple. The reversion everyone predicted keeps not happening — for years.

The Shrewd insight: A high multiple isn’t automatically a bubble — it’s a forecast. If the moat keeps making the forecast come true, year after year, the premium can endure far longer than the mean-reversion crowd ever expects.

This is why Fisher — and Buffett after him — was willing to pay up for quality and then hold for the very long term. The mistake isn’t paying 35 times for a business that earns it; the mistake is paying 35 times for a business whose growth is about to stall. The whole discipline comes down to telling those two apart — which rests on the durability of the moat, and on the patient scuttlebutt work of the previous page. Get that judgement right and time does something wonderful: the “expensive” stock turns out to have been cheap all along.

What to check before you pay up

The claim “the multiple can stay high” is only as good as the evidence for durable growth, so it is worth knowing what that evidence looks like. Three things carry most of the weight. Has the moat widened or narrowed over the last five years — is the company harder to displace now than it was? Is the growth being bought or earned — are sales rising while margins hold, or is the company discounting its way to a number? And how much does the growth cost — a business that must reinvest every dollar it earns to grow at all is a far poorer thing than one that grows while handing cash back, even at the same headline rate.

There is also a simple sanity check that costs nothing: work out what the business would have to earn in ten years to justify today’s price, then ask whether that figure is merely optimistic or frankly absurd. Our companion guide What Is a Business Worth? walks through exactly that arithmetic. A high multiple is a forecast; the least a Shrewd can do is read the forecast out loud before agreeing to it.

A caution, so we stay Shrewd: this is the hardest kind of investing to do well and the easiest to use as an excuse. “The multiple can stay high” is true of a handful of moated compounders and false of the many glamour stocks that merely look like them. Fisher’s demand for exhaustive homework wasn’t optional — it was the price of earning the right to pay a premium at all.

Which leaves the practical question. If the whole method rests on telling the rare durable grower from the convincing impostor, what exactly did Fisher look for — and, once he had found one, when did he ever sell?