Definition
What is a stock-market scanner?
A stock-market scanner monitors a defined equity universe for changing conditions across supported sessions. It can combine reference data, quotes, aggregates, scanner state, news, filings, earnings, offerings, and halt information when those sources are approved and available.
Who it is for
Built for active traders who verify the evidence.
TraderBase is built for active U.S. equity traders who need scanner discovery, ticker investigation, watchlist monitoring, and market-context review in one focused workspace.
How it works
From changing data to a focused review.
- 1Set the supported market-cap, price, exchange, and session universe.
- 2Run implemented current-state and event scanners over normalized provider data.
- 3Rank or alert on supported price, volume, VWAP, breakout, catalyst, earnings, and halt evidence.
- 4Open a symbol to review available charts, prints, quotes, company context, filings, and data status.
Capabilities
The information connected to this workflow.
Connected scanner engine
Use one authoritative market state for scanner results, alerts, charts, and downstream explanations.
Extended sessions
Distinguish premarket, regular, and after-hours fields instead of blending session calculations.
Company and event context
Review available fundamentals, news, filings, earnings, offerings, corporate actions, and halts.
Source status
Expose timestamps, delay, connection health, unavailable fields, and surface-specific provider approval.
TraderBase approach
What makes TraderBase different?
TraderBase connects market discovery to evidence without claiming universal coverage. Provider products, licensing, fields, account entitlements, and session availability determine what can be shown.
Common questions
Stock-market scanner FAQ
What market does TraderBase scan?
TraderBase is designed for supported U.S.-listed stocks available through configured and approved market-data sources. Coverage varies by provider, field, session, license, and account entitlement.
Does TraderBase scan all data sources at once?
No. Each source and product surface must be configured, approved, and available. Missing or unapproved sources remain unavailable rather than being replaced silently.
What happens if market data disconnects?
The interface should show a delayed, stale, reconnecting, offline, or unavailable state. It must not describe old data as current.