What is a public twin?

A sleeve of public-market proxies for a major private company, tracked as a live NAV. It is the crossmarket read-through: what public prices imply about the private name.

What is the twin fidelity record?

Forward-only grading: every time the private valuation reprices, the record shows whether the twin moved the same way. Agreement and disagreement are both published.

Can I use twins in my own work?

Editorial use is free with attribution as the QuantLogix Twin Fidelity record; the JSON API is public. A twin is diagnostic research — it is not an interest in the private company and not investment advice.

QL Public Twin

Every major private company gets a public twin — its crossmarket read-through sleeve, tracked as a live NAV from the night it enters coverage — and a forward-only fidelity record: every time the private company's disclosed valuation reprices ±5%, we grade whether the twin moved the same way over the standing window. High fidelity means the sleeve is a tradeable expression of the private name; low fidelity means it isn't — and we publish that either way. A proxy nobody grades is a proxy nobody should trade.

The fidelity record graded forward-only

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Look up a twin

Tracked: top-valuation names with a full sleeve

Twin leaderboard

Return since each twin's inception — not a backtest; every NAV starts at 1.000 the night its company enters tracking, and composition rebalances when the crossmarket graph moves.

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Methodology — v1.0.0

The twin is the company's read-through sleeve from the crossmarket graph — named rivals first, then suppliers and strategic investors, then customers and valuation comps — equal-weight, 5–10 names, rebuilt when the graph changes. Full holdings live in QL Read-through Basket (Pro).
The NAV steps nightly by the equal-weight close-to-close return of the sleeve. Days with thin pricing coverage (<60% of the sleeve) hold flat rather than letting survivors impersonate the basket. Composition changes are absorbed at rebalance and flagged in the series.
The grade. When a disclosed valuation reprices ±5%+, the standing twin move since its last anchor is compared by direction: same sign = HIT, opposite = MISS, twin inside ±1% = NO READ (recorded, excluded from the rate). Repricings under 5% never grade — restatements aren't outcomes.
The record starts empty and is never backfilled. Same contract as QL Score: we grade yesterday's claim with today's fact, never the reverse.

Citing twin fidelity

Editorial use is free with attribution — cite it as the “QuantLogix Twin Fidelity record” with a link to this page. The JSON is public: GET /api/private-companies/public-twin (?slug= for one twin, ?record=1 for the ledger). Commercial redistribution requires an API plan. Twins are diagnostic research, not investment advice; a sleeve of public proxies is not an interest in the private company.