Data & methodology

VolumeBrief ranks eligible US-listed common stocks and ADRs priced at least $1 by consolidated regular-session share volume from Alpaca SIP bars. Rankings are saved by trading date.

Intraday snapshots refresh every 30 minutes during US trading, beginning after the first half-hour; final reports follow the close. News is checked each cycle, X hourly, and related-company and diversification research daily. Each section shows its own update time. Live quotes are separate from saved snapshots. Statistical factor models estimate associations, not causes.

Automated summaries use cited news and, when available, X discussions. Social opinions are unverified and are not proof of why a stock moved. Missing evidence is labeled.

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Company classification uses Financial Modeling Prep when configured, otherwise Nasdaq Trader. Research is informational and is not personalized investment advice.