How MarketBrain is made
This page covers what MarketBrain is built on and how it decides what to publish — the universe, the coverage policy, the publishing rhythm, and the editorial review layer behind the coverage — at the level of what the system does.
The universe
Meridian maintains its own registry of U.S. domestic operating companies, currently 4,086 issuers, built from SEC filings rather than licensed from a third party. Shell companies, SPACs, and exchange-traded products are excluded by design, so the registry tracks operating businesses. Every issuer in the registry is assigned to one of five market-cap size tiers — mega, large, medium, small, and micro — the same classification that underlies the Meridian size-index family.
What gets covered, and how much
Earnings and deal coverage runs at full breadth across the small and mid tiers. The micro tier is covered by cap rank: the top slice of micro companies by market capitalization is in scope, selected by a fixed cap-rank cutoff, so coverage tracks where a reader is most likely to already hold a position. Definitive mergers, bankruptcies, and other clearly material events publish regardless of tier. Every company that qualifies gets a full standalone article and a standing company page; a smaller, curated set is highlighted on the front page as the day's most significant stories.
Publishing cadence
Event-driven coverage — earnings and deals — runs on a recurring schedule through the trading day, so new filings surface within hours rather than at the next daily digest. Alongside that, a fixed weekly slate of thematic columns covers industry trends, the broader economy, banking and regulation, and longer feature analysis, each on its own day of the week.
Editorial review
MarketBrain coverage is subject to an editorial review layer backed by a governance panel, and review findings are recorded in an internal audit trail.
The internal governance mechanics behind that review stay unpublished; a reader can evaluate any article on its merits without them.
From the audit trail
A few illustrative entries — outcomes only, no mechanism:
- 2026-06-21 — Domicile classification review: 47 pending decisions promoted.
- 2026-07-03 — Float-factor audit: a data discrepancy in float figures was identified and corrected; the audit trail records the finding and the correction.
- 2026-07-11 — Coverage-policy review: small and mid tiers moved to full coverage; the micro tier moved to a ranked top slice by market cap.
What we don't do
MarketBrain is not investment advice, and articles do not quote intraday stock-price moves. Coverage is built from primary filings and Meridian's own registry data; every piece links back to Meridian's broader index and research work.