Indices market data API

Indicative levels for major benchmarks across the US, Europe and Asia, over REST and WebSocket, with snapshots and historical bars for charts, dashboards and macro context.

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Benchmarks by generic code

More than 40 codes. A selection is below; GET /indices/symbols returns the list enabled for your key.

  • US500About 500 large US companies
  • US100100 large US non-financials
  • US3030 large US companies
  • US20002,000 smaller US companies
  • DE40Germany 40
  • UK100UK 100
  • EU50Europe 50
  • JP225Japan 225
  • HK33Hong Kong 33
  • KOR200South Korea 200
  • USDXUS Dollar Index
  • USVOLUS Volatility

Feed capabilities

Endpoints and channels available in the indices feed. Field-level details vary by endpoint; see the docs for nullability and optional fields.

Index levelsIndicative bid and ask via /indices/quote, with last print and change metrics via /indices/snapshot.
OHLCV aggregatesMinute, hourly and daily bars via /indices/agg. Volume can be null, since an index has no consolidated volume.
WebSocket channelsindices.quotes and indices.trades, same subscribe pattern as every other feed.
Symbols endpoint/indices/symbols returns each code with its name and an aggregates flag that says whether it has bars.

Inside the indices feed

Field for field, the exact responses the API returns. What you see here is what production sends.

Latest quote

Indicative bid and ask for the benchmark. An index has no order book, so read sizes as indicative, not as depth.

  • Indicative bid and ask for every benchmark
  • Millisecond timestamps on every response
  • Generic codes with no market prefix: US500, DE40, JP225
  • Identical shape across every asset class
GET/indices/quote/:symbol
{
  "symbol": "US500",
  "bid": 4788.12,
  "ask": 4788.12,
  "bid_size": 62,
  "ask_size": 58,
  "timestamp": 1743512400000
}
GET/indices/quote/:symbolLatest indicative bid and askDocs
GET/indices/trade/last/:symbolLast printDocs
GET/indices/snapshot/:symbolQuote, last print, prev close, and change in one responseDocs
GET/indices/agg/:symbol/prevMost recent settled daily barDocs
GET/indices/agg/:symbol/:multiplier/:timespan/:from/:toHistorical OHLCV range with paginationDocs
GET/indices/symbolsSymbol discovery for the feedDocs
WSindices.quotes · indices.tradesStreaming quotes and trades by subscriptionDocs

Benchmarked against a selected market reference.

Indicative index levels from a selected dealer. Contract specifications and sessions may differ.

Measured Sep 10, 2026, 10:18 to 10:43 UTC, one sample per second.

See the full Indices benchmark

0.62 bp

Price fidelity

1.76 bp

Tail deviation p95

94.6%

Within 5 bp of the reference

Typical use cases

Use index levels alongside stocks, ETFs, forex and other feeds with the same REST and WebSocket patterns.

Benchmark charts

Daily and intraday bars for broad market charts and comparison lines next to a holding.

Market overview screens

One snapshot call per benchmark fills a world markets board with level and change.

Macro context and alerts

Stream US500, USDX and USVOL as a backdrop for monitoring, and fire alerts on level moves.

Research and backtesting

Pull historical bars to measure a strategy or a portfolio against its benchmark.

Delayed price, chart and key figures for popular symbols, with the exact API calls that return them live.

View all symbols

Indices plans

Two self-service plans with hosted checkout, billed monthly or yearly. Yearly billing takes 20% off, and you can add other feeds to the same key at any time.

Individual

$49/ month

or $470 a year, 20% off

Internal use: research, testing and trading for your own account.

  • 250K API calls / month per feed
  • 10 requests / second REST rate limit
  • 1 WebSocket connection per feed
  • 10 WebSocket symbols per feed
  • Historical OHLCV bars, 1 minute to 1 day
  • Use in ChatGPT and Claude, no extra fee
  • Internal use only, not shown to other people
  • Standard support by email and chat
  • Major global indices
Choose Individual

Business

Commercial use

$449/ month

or $4,310 a year, 20% off

Commercial use: inside your product, shown to your own users.

  • 25M API calls / month per feed
  • 100 requests / second REST rate limit
  • 10 WebSocket connections per feed
  • Unlimited WebSocket symbols
  • Historical OHLCV bars, 1 minute to 1 day
  • Use in ChatGPT and Claude, no extra fee
  • Commercial use, shown to your users in your product
  • Business support and guided onboarding
  • Major global indices
Choose Business

Enterprise

Need more than a plan covers?

Redistribution and derived-data rights, custom symbols and markets, higher limits, a contractual SLA and a shared Slack channel, arranged directly with our team.

  • Redistribution rights
  • Custom symbols and markets
  • Slack support and SLA

Frequently asked questions

Talk to the team

Ask about coverage, limits, or the right plan for your use case.

Talk to us
What does the indices market data API return?

Indicative levels for major benchmarks as JSON: the latest bid and ask, the last print, snapshots with change metrics, and OHLCV bars. The same data streams over WebSocket on indices.quotes and indices.trades.

Which indices are covered?

Major benchmarks from the US, Europe and Asia, such as US500, US30, DE40, UK100 and JP225, plus the dollar index USDX and the volatility index USVOL. GET /indices/symbols returns the list enabled for your key.

Why do index symbols use generic codes?

Index names are trademarks, so each index is published under a generic code: a region and, usually, the number of companies in the basket. Codes carry no market prefix: write HK33, never HK:HK33. Read the name field rather than guessing from the digits.

Are these official index values?

No. Index levels on TickerLayer are indicative, derived reference values for analytics and display, not official values published by an index provider. Methodology and observed behaviour are on the indices data quality page.

Why is volume empty on some index bars?

v may be null when no consolidated volume exists for the interval. Codes marked "aggregates": false in /indices/symbols have no bars at all, so check that flag before you chart a code.

Are indices and ETFs the same feed?

No. They are two feeds with their own prices and plans, on the same API key. An index is a calculated level; an ETF is a traded fund with quotes and trades of its own. See the ETFs market data page for the other feed.

Ready to integrate?

Create an account, explore the docs, and connect via REST or WebSocket in minutes.

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