International equities

Definition

International equities extend the stock toolkit beyond US listings — developed (Europe, Japan) and emerging markets, accessed from US accounts via ADRs, US-listed country/region ETFs, and (out of platform scope) direct foreign accounts. Every position is two exposures braided together — the local equity and the currency (macro-currency-linkages) — and the classic diversification case carries the documented correlation caveat: international diversification works least in crashes, exactly when wanted (Longin-Solnik).

How it works / structure

• The access stack (engine-relevant): ADRs (instrument-adr — single names with the FX leg and session gap), US-listed ETFs (country/region/EM baskets — the NAV computes on closed home markets for Asia during US hours, so the ETF trades as price DISCOVERY, at premiums/ discounts to stale NAV — a structural fact, not mispricing), and hedged vs unhedged share classes (the FX decision made explicit — ext-fx carry costs apply to hedging high-rate-differential markets).
• The diversification evidence, both halves: long-sample correlations below 1 support the allocation case (port-diversification-math arithmetic); Longin-Solnik documented that extreme downside co-movement exceeds normal-correlation predictions — the benefit thins in tails; home-bias literature documents investors worldwide underweight foreign equity relative to any optimizer.
• Structural differences that bind: disclosure and accounting standards (IFRS vs GAAP comparability limits — fa-multiples-comparables comps discipline across borders), settlement and holiday calendars, EM-specific layers (capital controls, sanctions risk, state ownership — the 2022 Russia delisting/write-to-zero episode is the standing exhibit), and index-classification events (country promotions/demotions between EM/DM force flows — event-index-rebalance logic).
• The valuation-gap frame: persistent US-vs-international multiple gaps are documented; whether they mean opportunity or correct pricing of growth/governance differences is a thesis, not a fact — stated falsifiably per position.

When it applies

Allocation breadth (port-allocation-frameworks — the home-bias evidence argues for SOME weight; the tail- correlation evidence disciplines how much diversification credit it earns); single-name theses on foreign leaders (via ADRs with the FX decomposition); macro expression (country ETFs as policy-divergence vehicles); relative-value observation across the US/international multiple gap.

Risk profile & failure modes

• The FX leg unattributed: local-market gains erased in USD terms (or manufactured by them) — attribution without the decomposition mis-grades every international thesis.
• Tail-correlation disappointment: the diversification case quoted from calm-period correlations (port-correlation-budgets stress-matrix discipline applies across borders).
• EM discontinuity risk: sanctions, controls, and expropriation produce write-to-zero outcomes equities rarely produce elsewhere — sizing must price the discontinuity, not the volatility.
• Stale-NAV misreads: Asia-ETF premiums/discounts during US hours read as signals are mostly clock mechanics.

Evidence & limits

Access mechanics are SEC-documented; Longin-Solnik carries the correlation evidence; home bias is documented across decades. Long-horizon relative-return expectations (US vs international) are contested — the platform quotes the multiple gap as fact and leaves direction to falsifiable theses.

Falsifiable-thesis examples

Illustrations only, not signals:

• “The developed-international basket will outperform the US index in USD terms over the next year if the dollar index falls 5%+ (FX-driven relative thesis)” — falsified by the conditional pair.
• “This EM country ETF’s US-session premium to stale NAV will average within 50bp of zero this quarter (clock- mechanics check)” — falsified by the premium series.

Cross-references

• The single-name form: instrument-adr; the FX leg: macro-currency-linkages, ext-fx
• The allocation math and its caveat: port-diversification-math, port-correlation-budgets
• The comparability discipline: fa-multiples-comparables
• The flow events: event-index-rebalance