What Is OHLCV Stock Market Data?
OHLCV (Open, High, Low, Close, Volume) data aggregates trading activity into fixed time intervals known as candles.
Instead of processing every individual market event, developers can work with summarized price and volume information representing an entire trading period. Each candle captures the opening price, highest price, lowest price, closing price, traded volume, and number of executed trades during that interval.
Because each record summarizes thousands of individual market events, OHLCV data provides an efficient representation of historical market activity for analytical and visualization workloads.
OHLCV is especially useful when the goal is to compare instruments consistently across time, since each candle follows the same structure regardless of the underlying symbol or exchange.
This makes it a practical foundation for charting interfaces, technical indicators, volatility analysis, backtesting, and other time-series workflows where raw event-level data would be unnecessarily heavy.
Within the FinFeedAPI Stock platform, the OHLCV dataset complements the Metadata dataset, which provides exchange and symbol discovery, and the Native IEX datasets, which expose lower-level market events such as trades, quotes, and order book updates. Developers typically discover exchanges and symbols first, then request OHLCV data using those identifiers.
