Index
US VolatilityUSVOL
US Volatility, served as the index code USVOL. Every figure on this page lags the feed by 15 minutes. The same data, in real time, is one API call away.
USVOL price chart
Historical bars for USVOL are not on the delayed view yet. The API serves its live quote now.
- Previous close
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- Day range
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- 52-week range
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- Volume
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- Avg volume (30d)
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Integration
USVOL in your app, in real time
The page above is the delayed view. These are the calls that return USVOL live: one snapshot for the headline numbers, one aggregate call for the chart, one WebSocket subscription for every tick after that. Same symbol, same field names, on every asset class.
curl "https://api.tickerlayer.com/indices/snapshot/USVOL" \
-H "x-api-key: YOUR_API_KEY"curl "https://api.tickerlayer.com/indices/agg/USVOL/1/day/2025-09-07/2026-09-07" \
-H "x-api-key: YOUR_API_KEY"{
"action": "subscribe",
"channels": ["indices.quotes", "indices.trades"],
"symbols": ["USVOL"]
}{
"symbol": "USVOL",
"last_price": null,
"prev_close": null,
"change": null,
"change_percent": null,
"last_timestamp": null
}More indices
Other indices on the same key
Frequently asked questions
Is the USVOL price on this page real-time?
No. The price, the ranges, and the chart are delayed by at least 15 minutes and refresh periodically. They are here so you can see the instrument the API serves before you integrate. Real-time USVOL data is delivered through the REST snapshot and quote endpoints and the WebSocket channels on an API key.
Where does the USVOL data come from?
TickerLayer builds derived, indicative market data from non-exchange inputs such as CFD-style pricing references, contributor pricing, and over-the-counter activity, normalized into one schema across every asset class. It is not official venue data and should not be presented to your users as such.
How do I get USVOL market data through the API?
Call GET /indices/snapshot/USVOL for the latest price, previous close, and change, GET /indices/quote/USVOL for bid and ask, and GET /indices/agg/USVOL/1/day/{from}/{to} for OHLCV bars. Subscribe to indices.quotes or indices.trades on the WebSocket to stream updates as they happen.
Which bar intervals are available for USVOL?
One, five, and fifteen minute bars, one and four hour bars, and daily bars, each with a documented maximum window per request. Daily history reaches back several years for most instruments; intraday history is capped by interval so responses stay fast.
Can I show USVOL data to my own users?
Yes, inside your product or workflow on a commercial plan. Redistributing the raw feed, reselling it, or publicly displaying it as a standalone data product needs a separate agreement. If your use case looks like any of those, talk to us before you launch.
Is USVOL available on the free tier?
Every account starts with 3,000 free REST requests a month, which is enough to integrate and test any index. Paid plans add volume, WebSocket streaming, and commercial use.
Delayed, derived, indicative data for informational and integration purposes. Not official venue data, not investment advice, and not a system of record. See the market data disclaimer.