The question index investors don’t ask

The best default in finance

Buying a broad market index is one of the best default decisions an investor can make. It is cheap, it is diversified, and it spares people from a thousand expensive mistakes. None of what follows is an argument against it. It is an argument for understanding the one assumption it quietly makes on your behalf.

What market-cap weighting actually does

A market-capitalisation-weighted index takes the market as given — including its current valuation. By construction, you own the most of whatever has already risen the most, at whatever price the market happens to be charging today. You are not deciding what to own, or what is reasonable to pay. You are accepting the market’s decision, and its price tag, in full.

When the assumption is fine — and when it isn’t

When starting valuations are reasonable, that is a perfectly good arrangement. It becomes a different proposition when valuations sit near historical extremes — because where you start has, historically, mattered a great deal for where you end up over the following decade. The price of admission is not a detail; over long horizons, it is much of the story. It is the same logic the Excess CAPE Yield makes visible.

A different question

A valuation-aware approach asks something the index never does. Not “what is the market’s weight in this,” but: what should I own, and at what price, if my starting point shapes my outcome? It is a question about quality and about price — the two things market-cap weighting deliberately sets aside. That question is the whole of our equity approach.

Isn’t this just active management with extra steps?

It is the obvious objection, and it deserves a straight answer. This is not a crusade against indexing. For most people, most of the time, a low-cost index remains a sound default. The point is narrower and more useful: be awake to the one assumption baked into it, rather than mistaking a passive vehicle for having no view at all. It has a view. It simply does not announce it.

Passive isn’t passive about valuation

Passive isn’t passive about valuation. It takes a side — it just doesn’t tell you which one.

Knowing which side, and at what price, is not a rejection of indexing. It is simply refusing to look away from the one question that decides so much of the result.