Real-time and historical
US stock market data through one API.

Coverage includes supported US-listed common stocks, ETFs, and ADRs, with additional listed security types available where mapped in the live symbol catalog. The catalog is the source of truth for current ticker, company-name, and SEC-identifier coverage.

The live REST endpoints provide the latest supported trade and top-of-book quote, while WebSocket subscriptions stream tick frames for entitled symbols. Fields and availability follow the current live-market-data and WebSocket documentation.

No. SiftingIO provides aggregated, derived, and normalized market-data outputs based on third-party sources. It does not redistribute raw primary exchange feeds or official exchange-of-record prices, and its values may differ from a specific exchange, broker, or data vendor.

The documented US equities bars endpoint provides regular-session OHLCV at 1m, 5m, 15m, 30m, 1h, 1d, 1w, and 1mo intervals. Historical depth depends on the ticker, listing date, and subscription tier: one month on Free, one year on Builder, and full available history on Pro and above.

Yes. Company-profile endpoints provide issuer identity and classification fields such as ticker, CIK, exchange, SIC, entity type, and fiscal year end. Filing endpoints cover recent 10-K, 10-Q, 8-K, DEF 14A, Schedule 13D and 13G, and earnings-release metadata.

SiftingIO provides standardized XBRL concepts from 10-K and 10-Q filings, including full company bundles, individual concepts across periods, cross-sectional screeners, and accounting ratios derived from reported statements.

Not in the current version. The ratios endpoint is based on reported XBRL concepts and currently includes accounting measures such as margins, return on equity, return on assets, debt to equity, liquidity ratios, asset turnover, and free cash flow. Price-dependent valuation ratios are not currently included.

Yes. Insider endpoints normalize Form 3, 4, and 5 transactions into row-level records. The institutional-holdings endpoint provides current 13F-HR positions for supported filers.

Send the API key in the X-API-Key header for REST requests. For WebSocket, pass the key in the ?key= query parameter. The same SiftingIO API key can authenticate both methods, subject to market entitlements and plan limits.

US equity usage rights depend on whether the user is professional or non-professional, whether the data is used for display or non-display purposes, and whether it is redistributed. Customers are responsible for accurate usage classification, and commercial display or redistribution requirements should be confirmed before launch.

Eligible Pro and Ultra plans support commercial use and customer-facing display subject to plan and licensing terms. Raw-feed redistribution, B2B sublicensing, custom distribution, and high-volume embedded use may require an Enterprise agreement.

Yes. The Free plan requires no credit card and includes 10,000 monthly REST calls, one WebSocket connection, five symbol subscriptions, one API key, and one month of historical depth for evaluation and internal non-commercial use.