1,257 U.S. equities and ETFs. 1-minute bars. March 7, 2022 through present (IEX Exchange HIST).
Tickers
Bars (Clean)
Trading Days
Academic Variables
Browse the full ticker list — searchable and filterable by sector, type (Stock/ETF), and index membership (S&P 500, Nasdaq 100, Dow 30).
Tickers are sorted by average daily dollar volume into five quintiles. Data quality varies systematically with liquidity. The quintile figures are being recomputed for the IEX data and will be published again after the restructuring.
| Quintile | Tickers | Description | Avg. gap rate | Data completeness |
|---|---|---|---|---|
| Q5 (most liquid) | 278 | Large-cap, heavily traded (AAPL, MSFT, SPY...) | 2.1% | |
| Q4 | 278 | Mid-to-large cap | 8.4% | |
| Q3 | 279 | Mid-cap | 18.7% | |
| Q2 | 278 | Small-to-mid cap | 32.5% | |
| Q1 (least liquid) | 278 | Small-cap, thinly traded | 51.8% |
Gap rate = fraction of the 390-bar daily grid (09:30–15:59 ET) with no observed trade.
Single exchange only — IEX Exchange pcap files, parsed into one-minute OHLCV bars. IEX represents approximately 2–3% of consolidated volume. Volume and trade counts are substantially lower than the full tape. Some tickers may have no IEX trades on a given day.
Coverage: March 2022 – present (updated daily)
IEX Exchange HIST is the only free, redistributable source of U.S. equity intraday data.
Data provided for free by IEX. By accessing or using IEX Historical Data, you agree to the IEX Historical Data Terms of Use.
Both versions (Raw and Clean) are available in eight timeframes, aggregated from the base 1-minute bars: