What EOD data contains
An end-of-day record summarizes a full session in a single row. It usually carries the daily open, high, low, close, and volume, which is a daily OHLCV bar, stamped with the session date. Because there is one record per session rather than a continuous stream, a long history of EOD data is compact and straightforward to store and process.
EOD versus real-time and intraday data
The difference is granularity and timing. Real-time data updates continuously as the market moves, intraday bars divide the session into smaller intervals, and end-of-day data reduces the entire session to one record produced after it closes. EOD data says nothing about how the price moved during the day, only where it began, ended, and ranged.
Why EOD data is widely used
End-of-day data is the standard input for long-horizon analysis. Daily closes underpin trend studies, backtests measured in days or longer, portfolio valuation, and reporting. Because it is light to serve and carries fewer distribution constraints than live data, EOD is also a common free or low-cost tier.
When EOD is not enough
End-of-day data is unsuitable wherever intraday timing matters. It cannot drive a live chart, fire an alert, or support any decision that depends on the current price, and it cannot show how a session unfolded. Those needs call for intraday bars or a real-time feed instead.
End-of-day data on SiftingIO
SiftingIO serves daily OHLCV bars over REST for stocks, forex, crypto, and commodities under one schema, which provide the end-of-day close, range, and volume for each session. The same platform offers intraday bars and a real-time feed, so an application can use EOD history for long-horizon work and switch to finer data where intraday detail is required.