Mixing Research with Index Funds

The idea, in one sentence

Instead of owning every country in the world in equal measure and never thinking about it, you own the whole world as your base — and then lean a little toward markets that research suggests have the wind at their back. That lean is the "tilt." This page explains how that works, shows you what the signals say right now, and is honest about where it can go wrong.

Your original instinct — "can we find a market more likely to be on the up?" — is a real strategy. Professionals call it tactical geographic allocation. The trick is doing it with measured signals instead of gut-feel headlines.

Why not just read the news?

The tempting version is to read the news — "the US looks shaky, South America looks promising" — and bet on the story. The problem: markets already know the news. If it's in the headlines, it's already in today's prices. Forecasting which country rises next from a story is very hard, and most people who try do worse than if they'd owned everything.

So we replace "what does the news say" with two things you can actually measure. Neither is magic. Both have decades of research behind them. And — importantly — they often disagree, which is the honest heart of this whole approach.

Signal 1 — Valuation: how cheap is a market?

The tool here is called CAPE (you'll also see "Shiller P/E"). In plain terms: it compares a market's price today to its average earnings over the past ten years, so one crazy boom or bust year can't distort it.

• Low CAPE = cheap = historically higher returns over the next 7–10 years.
• High CAPE = expensive = historically lower returns.

Think of it like buying a rental property: paying less for each dollar of rent tends to work out better over the long haul. Cheap isn't bad; expensive isn't good — over a decade.

Here's where the major markets sit today (longer bar = more expensive):

CHEAP
Hong Kong    ███ 9.5
Brazil       ███ ~10
EmergingMkts ██████ ~19
UK           ███████ ~20
Europe       ███████ ~21
Germany      ████████ 23
Whole World  ██████████ 29
India        ██████████ ~30
USA          ████████████ ~36
Japan        █████████████ 39
South Korea  ██████████████ ~41
Taiwan       ███████████████ 46
EXPENSIVE

Source: Siblis Research (Jun 2026) + Research Affiliates/Barclays (2025). Levels vary a few points by provider — read the ranking, not the decimal.

What jumps out: the US is near the most expensive it has ever been — the broad US market's CAPE is around the 99th percentile since 1881, a level only seen at the 2000 dot-com peak. Meanwhile emerging markets, Latin America (Brazil), and the UK trade at roughly half the US multiple. That big spread is exactly the situation your idea was reaching for.

The honest catch: valuation is a weak, slow, noisy signal. Even its biggest champion (Meb Faber) says CAPE is "powerful for long horizons but almost useless for timing." Cheap markets can stay cheap for years — China has looked cheap for ages and disappointed. It tells you almost nothing about the next year or two.

Signal 2 — Momentum: what has wind at its back?

Momentum (or "trend") is the opposite time-horizon: markets that have been rising over the past 6–12 months have historically tended to keep rising for a while. Shorter-term, noisier, but real.

Where the majors are trending right now (Aug 2026):

• Roaring up ↑↑ — South Korea (AI/chip boom, up enormously) and Japan (+28% this year). Also the strongest momentum.
• Solidly up ↑ — USA (+9–13%, still in a clear uptrend), Brazil (~+24%), Emerging Markets broad (+20%).
• Flat / drifting → — Europe and the UK (up modestly, middle of the pack), China (choppy, trying to turn up).
• Falling ↓ — India (in a correction, the clearest laggard).

The honest catch: momentum reverses hard and without warning. The biggest winners (Korea, Japan) are exactly the ones that can fall hardest when the mood flips — being far above trend is as much a stretched-rubber-band risk as a green light.

The honest heart: when the two signals disagree

This is the part most "get rich" pitches hide. Valuation and momentum frequently point in opposite directions, and today is a perfect example:

• Brazil — cheap and rising. Both signals agree → the strongest kind of signal (but a volatile, single-country bet).
• Emerging Markets broadly — cheap and rising. Agreement, and diversified.
• South Korea / Taiwan / Japan — expensive but soaring. Momentum says yes, value says danger. Chasing these is buying dear.
• UK / Europe — cheap but going nowhere. Value says yes, momentum says "not yet."
• USA — expensive but still trending up. The classic dilemma of the last few years.
• India — cheap-ish but falling. A possible value bargain, or a falling knife.

There is no market where everything lines up perfectly. That's not a flaw in the method — it is the method. The discipline is leaning gently toward agreement (cheap + rising) while staying diversified, rather than betting the farm on any one story.

What it would look like today

Here's an illustration — not a recommendation — of how these rules might translate for a $750 account, keeping it set-and-forget and equities-only:

Core — 75% ($562): VT (Vanguard Total World, 0.06% fee) One fund, ~10,000 stocks, the entire planet. This alone is a complete, sensible portfolio. Everything below is just a gentle lean on top.

Tilt sleeve — 25% ($188), toward cheap + rising, kept diversified:

• VWO — 12% ($90) — broad Emerging Markets (0.06%). Cheap and trending up, and spread across many countries.
• ILF — 7% ($52) — Latin America (0.47%). Captures deep-value Brazil without betting on a single stock market alone.
• VGK — 6% ($45) — Europe (0.06%). Cheap developed markets, patient value.

Notice what this deliberately avoids: it does not pile into Korea/Taiwan just because they're soaring (too expensive, too stretched), and it caps any single-country risk. The core keeps you globally diversified no matter what the tilt does.

Fractional shares (at Fidelity or Alpaca) are what make splitting $750 across four funds actually work — otherwise leftover cash piles up.

How Eidolon would actually run this

This is where your agent earns its keep — not by picking winners, but by doing the disciplined chores you'd never keep up by hand:

1. Once a quarter (or once a year) it recomputes the two signals — valuation and trend — for each region.
2. It proposes any small change to the tilt in plain English ("EM got more expensive and India kept falling; suggest trimming the India lean").
3. You approve — you stay in the driver's seat.
4. It directs your next contribution toward whatever's underweight, so it rebalances without selling.
5. It writes you a plain-language monthly note: where you are, what moved, what the plan says.

This is mildly active — not pure set-and-forget. That's the one honest tension with your earlier choice. Keeping the rule slow and mechanical (adjust yearly, not daily) keeps it close to hands-off. And crucially: because there's now a real claim to test — "does leaning toward cheap, rising markets beat just owning the world?" — we prove it on paper first, against a plain VT benchmark, before a single real dollar follows it.

The five things I most want you to remember

1. Own the whole world first. The tilt is a lean, never the whole bet.
2. Two signals, and they disagree — cheap (valuation) and rising (momentum) rarely point the same way. Lean toward where they agree.
3. Both signals are weak and noisy. They shift the odds a little; they don't predict the future.
4. Cheap can stay cheap; winners can crash. Value traps and momentum reversals are real.
5. Nothing here is proven yet. Next step is a paper trial that has to beat simply owning the world — or we don't do it with real money.

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Want to go deeper on any one piece — what an index fund actually is, how CAPE is calculated, or how the paper trial would work? That's the next conversation.