US Stocks Data API. Real-Time and Historical Prices.

It’s here. Every single quote and trade. Stocks and ETFs from all 16 US exchanges. Mind-blowing 100% market volume.

US Stocks Data API

Impressively accurate.

SIP sources real-time, exchange-direct data with National Best Bid and Offer (NBBO) prices for every US stock – making it the definitive source for precision financial API.


Tailor SIP’s data to your needs – choose real-time or delayed data, WebSocket streaming or REST API access, set API requests volumes, and more. True on-demand flexibility is finally here.

No bureaucracy.

Start streaming market data in minutes using easy-to-follow instructions without paperwork or sales calls. SIP data is ready when you are.

Easy integration.

Integrate all real-time SIP data straight into your apps and models via API, WebSocket, and gRPC for a seamless fit.

Securities Information Processor


is a commercial entity responsible for




real-time bid/ask quotes and trade data from every

us flag

US stock exchange.


US Stock Market Data API. A dataset that has it all.

SIP is your all-access pass to the data that moves markets.

Every US exchange.
Every tick.

Every US exchange. Every tick.

Real-time data.
Historical data.

Real-time & historical data
API requests per minute


Up to API requests per minute.

Level 1 data.
From NBBO.

Quotes processed per second

1 million

Quotes processed per second.

And use.

Customize and use
Aggregated data

Aggregated data. From 1-minute to 1-months.

Technical indicators

Technical indicators

With all asset classes

With all asset classes.


Premarket. Post market at glance.

Ultrafast latency.
Under 300 ms.

Ultrafast latency

Tick-by-tick updates.
Every movement captured.


Access data like never before.

Want direct access to the lifeblood of the markets? The SIP API unlocks a world of potential for developers. Here are the key features you can tap into.

Simple API requests.

No overcomplication when retrieving stock market API data. We designed our API using canonical conventions and standards that developers love. Ensuring you can focus on building your product instead of spending time learning the API.

  • Response in JSON or CSV formats.

  • Ready-to-use SDKs for major programming languages.

  • Detailed documentation, supplemented with practical guides and hands-on tutorials.

GET /latest/time_series

curl --request GET
  --url '' 
  --header 'Authorization: apikey your_api_key'


        "t": 1697227140,
        "o": 178.79,
        "h": 178.94,
        "l": 178.7,
        "c": 178.85,
        "v": 6290538

WebSocket API.

The most efficient method to auto-stream US stock data from exchanges. Simply connect once, subscribe to the required tickers and channels, and handle the data on your end.

  • Aggregated data streaming in 1 minute bars.

  • Raw trades and quotes streaming.

  • Detailed documentation, complemented by practical guides and hands-on tutorials.

Request example

    "event": "subscribe",
    "dataset": "sip_non_pro",
    "tickers": ["AAPL","TSLA"],
    "channel": "bars",
    "frequency": "1s",
    "aggregation": "1m"


The ultimate solution for high-performance market data transport.

  • JSON, XML — data in any format!

  • Auto generated SDKs for most programming languages.

  • Comprehensive documentation enriched with user-friendly guides and interactive tutorials.

Request example

  -H 'authorization: Bearer your_api_key'
  -d '{"dataset": "sip_non_pro", "ticker": "AAPL"}'

Spreadsheets add-ons.

US stock market data API can be accessed non-programmatically via spreadsheets add-ons, which give you a fast, easy, and powerful way to unlock the potential of your work.

  • Google Sheets Add-on.

  • Excel Add-on.

  • Automatic data refresh.

finazon addon



daily requests



instruments available



exchanges supported




Reference data to locate any instrument.

Extensive reference data, curated by AI and our editorial team. All information is standardized.

Access stocks using:

  • Ticker
  • CIK
  • ISIN
  • CQS
  • Composite FIGI
  • Share FIGI
  • LEI


    "data": [
        "ticker": "AAPL",
        "currency": "USD",
        "security": "Apple Inc. - Common Stock",
        "mic": "nasdaq",
        "asset_type": "COMMON_STOCK",
        "cqs": "",
        "cik": "320193",
        "cusip": "037833100",
        "isin": "US0378331005",
        "composite_figi": "BBG000B9XRY4",
        "share_figi": "BBG001S5N8V8",
        "lei": "HWUPKR0MPOU8FGXBT394"

Our most advanced price data ever.

Raw trades and quotes are designed to provide a true reflection of the market situation. Our aggregated time series data is available in 1 minute, 2 minutes, and 1 month intervals, allowing you to build charts, analyze data, or run a backtesting.


    "data": [
            "t": 1697227140,
            "o": 178.79,
            "h": 178.94,
            "l": 178.7,
            "c": 178.85,
            "v": 6290538
            "t": 1697227080,
            "o": 178.78,
            "h": 178.85,
            "l": 178.75,
            "c": 178.79,
            "v": 363178
            "t": 1697227020,
            "o": 178.9,
            "h": 178.93,
            "l": 178.745,
            "c": 178.775,
            "v": 282778

Unmatched data quality.

Finazon ensures superior data quality at every stage — from data collection, processing, and cleaning to aggregation and dissemination. With our extensive network of global servers, you're guaranteed optimal response times without any delays.

Compared to other providers, Finazon delivers up to 2x faster data responses, up to 50 percent greater price accuracy, and up to 50 percent more server fault tolerance.

Unmatched data quality

Up to


Faster responses

Up to


Price accuracy

Up to


Fault tolerance


A clear winner.

Maximize your potential with data that has it all.


Don’t take it from us!

We welcome every feedback and are open to comments & suggestions.


Reviews from G2 & Trustpilot


Sophia B.

Small-Business (50 or fewer emp.)

review source


This platform provides incredibly accurate data of a wide specter.



Investment Banking

review source


I like their customizable configuration of each dataset. Simple and intuitive. Unlike I've seen anything before.


Scarlett Wright


I've been using Finazon for over a year now, and from what I can see, it is a straightforward, ever-evolving platform with amazing customer service.


David Helmsey


Customizable datasets, which adapt perfectly to my needs are the killer feature. Additionally SDK and plugins via gRPC are something unique.


James Hogan



Impressive data provider! Excellent data quality and user-friendly interface. Just a bit more customization would be perfect.


A pricing structure set by you.

Customizable. No hidden fees.

The first market data provider that actually encourages you to pay less.

  1. Configure dataset specifically to your use case.

  2. Subscribe, with full fee transparency.

  3. Integrate data into your app.

Starts at $4 monthly.

Start now
The first market data provider that actually encourages you to pay less

Choose only options you need.

Choose among many configuration options for your dataset, such as:

  • Number of API calls
  • API delay
  • WebSocket data streaming types

and more.

Start now
Choose only options you need

Accelerate enterprise innovation.

Accelerate enterprise innovation:

  1. Scale with confidence.

  2. Extended data limits with an option to adopt API to your case.

  3. Enterprise trust and security, together with dedicated support.

Try yourself
Accelerate enterprise innovation

Questions? Answers.

SIP is the only publisher in a world that offers 100% coverage of all US exchange data. Finazon receives this data, aggregates it, and provides real-time and historical prices via API.

The difference between these two datasets lies in the exchange licensing and trading volume. If you're a Non-Professional individual, you don't have to sign any agreements or obtain a license. However, if you use the data for commercial purposes, the US Stock Market Data API requires you to obtain permissions from exchanges first and pay additional fees. With the US Stock Essential Market Data API, you avoid this, but you'll receive lower market coverage, capturing roughly 5% of trading volume.

Prices start at $4 monthly for Non-Professional, individual use. For Professional, commercial usage, prices begin at $2,000 a month plus exchange fees, which vary based on your use case, typically ranging between $2,500 and $10,000.

Prices come from every single exchange in the US: New York Stock Exchange (NYSE), NASDAQ, Cboe Global Markets (which includes BZX Exchange, BYX Exchange, EDGA Exchange, and EDGX Exchange), NYSE American (formerly known as AMEX), NYSE Arca, IEX (Investors Exchange), Members Exchange (MEMX), Long-Term Stock Exchange (LTSE), MIAX (Miami International Securities Exchange, primarily for options), and FINRA Alternative Display Facility.

With the US Stock Market Data API dataset, historical daily, weekly, and monthly prices date back to inception. Intraday historical prices are available from January 2023 onward. Deeper historical tick level and aggregated prices are available on demand.

To guarantee the highest data quality, we connect directly with CTA & UTP (part of SIP). After receiving the prices, we aggregate them following 30+ official rules and replicate them on multiple servers. Additionally, we run machine learning algorithms to ensure the data contains no outliers. As a prime partner for the largest trading companies, Finazon guarantees institutional-level quality with a 99.99% SLA.

bullion coin etherium bitcoin

Supercharge your work with US Stock Market Data API.

Our complete SIP guide

Learn everything you need to know about how SIP works.

Learn more

Get a help buying

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Finazon • Marketplace for the Global Financial Data APIs
Finazon is a financial data marketplace covering stocks, forex, cryptocurrencies and beyond. Access real-time, historical and alternative data via API & WebSocket.
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Finazon LLC