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API Access
Access dataset files directly from scripts, code, or AI agents.
Each file has a stable URL (r-link) that you can use directly in scripts, apps, or AI agents. These URLs are permanent and safe to hardcode.
Start with these files — they give you everything you need to understand and access the dataset.
- 1. Fetch datapackage.json to inspect schema and resources
- 2. Download data resources listed in datapackage.json
- 3. Read README.md for full context
Data Views
Data Files
Explore with AIvix-monthly
| Field | Type | Format | Description |
|---|---|---|---|
| Date | date | default | Month-end date in YYYY-MM-DD format. |
| Close | number | Month-end VIX closing value |
Download
Download CSVAbout
- Month-end VIX closing values derived from the daily series. Each row is the last trading day of that calendar month.
- Last updated
- 29 May 2026
- Total rows
- ...
- Format
- CSV
- File size
- 9.63 kB
vix-daily
| Field | Type | Format | Description |
|---|---|---|---|
| DATE | date | default | Trading date in YYYY-MM-DD format. |
| OPEN | number | VIX opening value. Identical to CLOSE for dates on or before 06/11/2004. | |
| HIGH | number | VIX intraday high. Identical to CLOSE for dates on or before 06/11/2004. | |
| LOW | number | VIX intraday low. Identical to CLOSE for dates on or before 06/11/2004. | |
| CLOSE | number | VIX closing value. |
Download
Download CSVAbout
- Daily VIX open, high, low, and close values from January 1990 to present. Rows through 06/11/2004 (506 rows) have identical OPEN, HIGH, LOW, and CLOSE values because CBOE only recorded closing prices before that date.
- Last updated
- 29 May 2026
- Total rows
- ...
- Format
- CSV
- File size
- 478 kB
About this dataset
Finance VIX
CBOE Volatility Index (VIX) time-series dataset including daily open, close, high and low, covering January 1990 to present. The CBOE Volatility Index (VIX) is a key measure of market expectations of near-term volatility conveyed by S&P 500 stock index option prices introduced in 1993.
Data
From the CBOE VIX historical data page:
In 1993, the Chicago Board Options Exchange® (CBOE®) introduced the CBOE
Volatility Index®, VIX®, and it quickly became the benchmark for stock market
volatility. It is widely followed and has been cited in hundreds of news
articles in the Wall Street Journal, Barron's and other leading financial
publications. Since volatility often signifies financial turmoil, VIX is
often referred to as the "investor fear gauge".VIX measures market expectation of near term volatility conveyed by stock
index option prices. The original VIX was constructed using the implied
volatilities of eight different OEX option series so that, at any given time,
it represented the implied volatility of a hypothetical at-the-money OEX
option with exactly 30 days to expiration.The New VIX still measures the market's expectation of 30-day volatility, but
in a way that conforms to the latest thinking and research among industry
practitioners. The New VIX is based on S&P 500 index option prices and
incorporates information from the volatility "skew" by using a wider range of
strike prices rather than just at-the-money series.
Data quirks
- Early OHLC data (through 06/11/2004): The first 506 rows of
vix-daily.csvhave identical OPEN, HIGH, LOW, and CLOSE values. CBOE only recorded daily closing values before mid-2004; the open/high/low fields are filled with the close value for those dates. - Monthly data:
vix-monthly.csvis derived from the daily file on every run. Each row is the last trading day's close for that calendar month.
Development
This is a simple pipeline where the only requirement is to have curl and make. You can get the data by running the following command locally:
make
The daily data is fetched from:
https://cdn.cboe.com/api/global/us_indices/daily_prices/VIX_History.csv
License
No obvious statement on historical data page. Given size and factual nature of the data and its source from a US company would imagine this was public domain and as such have licensed the Data Package under the Public Domain Dedication and License (PDDL).