Volume dataset
Volume stock screener data
Screen a historical universe by volume without accidentally using today’s membership or incomplete sessions.
Primary source
Permitted historical market sources
API route
/v3/stocks/{symbol}/bars?fields=timestamp,volume
Coverage
Explicit by stream
Serving
Rights-aware
What this dataset means
Stock volume is the number of shares reported as traded during a defined interval. It is meaningful only with a market, session, interval, and source: daily consolidated volume, venue volume, and an intraday bar are not interchangeable measurements.
The buyer’s objective is straightforward: Rank stocks by average, relative, or event-window volume. DataCedar keeps the research contract visible so the output can be inspected before it is trusted.
Fields delivered
The endpoint is /v3/stocks/{symbol}/bars?fields=timestamp,volume. Responses retain deterministic pagination and the metadata needed to connect normalized records to their source run.
How to evaluate a provider
Use a point-in-time universe, declare the normalization formula, and reject securities whose lookback coverage is incomplete.
Volume from a free chart endpoint may differ from consolidated SIP volume. DataCedar labels the source and does not imply consolidated real-time coverage. DataCedar deliberately exposes that boundary in the product rather than leaving customers to infer it from a missing endpoint or a legal footnote.
Failure modes to test before purchase
- Survivorship bias.
- Universe leakage.
- Thin-history securities ranked as extremes.
- Acquisition access is treated as proof of redistribution rights.
- An empty array cannot distinguish no event from incomplete collection.
Source, freshness, and reproducibility
Source. Permitted historical market sources. DataCedar stores source identifiers and retrieval runs before normalization, then serves its own stable downstream schema.
Freshness. Elapsed sessions are checked after close and can be reprocessed when the upstream source publishes a correction.
Rights. Public responses are restricted to sources and plans that permit downstream serving; acquisition credentials are never the public data contract.
Questions, answered.
The research schema includes symbol and security ID, interval start and end, trading session, reported share volume, price fields for alignment, coverage state, source rights class. Fields remain connected to source, retrieval, coverage, and rights metadata.