What Is OHLCV Data?

OHLCV stands for Open, High, Low, Close, Volume. It is the standardized format used to represent price movement and trading activity within a defined time interval such as 1-minute, 5-minute, hourly, or daily bars.

What Each OHLCV Field Means

• Open — The first traded price in the interval
• High — The highest traded price in the interval
• Low — The lowest traded price in the interval
• Close — The final traded price in the interval
• Volume — The total traded volume during the interval

Why OHLCV Data Matters

Traders, developers, and quantitative researchers rely on OHLCV datasets to build strategies, backtest models, and analyze market structure. If the dataset is inconsistent, silently revised, or missing bars, analytical results become unreliable.

The Problem with Silent Data Revisions

Many data sources retroactively modify historical bars without versioning. This can invalidate backtests and distort performance metrics.

Immutable OHLCV Data

Dark Tower Data publishes daily OHLCV market datasets for Forex, Cryptocurrency, and U.S. equities as immutable ZIP archives. Each bundle includes SHA-256 verification manifests so users can independently confirm dataset integrity.

Who Uses OHLCV Data?

• Algorithmic traders
• Quantitative researchers
• Backtesting platforms
• Financial engineers
• Data analysts

View current downloadable datasets on our Daily Data Downloads page, or monitor system integrity via the Public Status page.