Stock API
5 Best Stock APIs for Real-Time and Historical Prices
Compare 5 stock APIs for real-time & historical market data, including iTick, Alpha Vantage, Finnhub, Twelve Data and yfinance
Power your strategies with global stock data. Real-time and historical feeds from 50+ exchanges via WebSocket & RESTful API. Built for quantitative trading, research, and fintech.
iTick Stock API covers major global stock markets, providing real-time quotes, historical data, and depth data services
NASDAQ, NYSE, AMEX
All stocks on NYSE, NASDAQ, and AMEX with real-time order books and Level-2 depth data
10,000+ StocksHKEX
All HKEX stocks with real-time quotes, historical K-lines, and corporate actions data
2,500+ StocksSSE, SZSE
All A-shares on Shanghai and Shenzhen exchanges with real-time quotes and market depth data
5,000+ StocksTSE
All Tokyo Stock Exchange stocks with real-time quotes and fundamental data
3,800+ StocksSGX
Singapore Exchange stocks with real-time quotes and historical data
700+ StocksLSE, ASX, TSX & More
Covering UK, Australia, Canada, and more global exchanges with custom data solutions
Contact UsStandardized JSON / CSV. Our data is available in both JSON and CSV formats, making it easy for you to integrate it into your application
Client Libraries. Our client libraries make it simple to access and use our data, so you can spend less time worrying about the technical details and more time building your application
Tutorials & Examples. We know that getting started with a new API can be hard, which is why we provide tutorials and examples to help you get up and running in no time
Rows of Data
Raw Data
Uptime
Messages/sec
Our S3 interface lets you access our flat files easily and seamlessly. With just a few clicks, you'll have the data you need to power your applications
Our Restful and WebSocket APIs provide flexible and powerful options for accessing our data. Whether you need real-time or historical data, we've got you covered
Our SQL Query option lets you harness the power of SQL to access our data. With this flexible and intuitive option, you can easily customize queries to fit your needs
Get a free API key upon sign up
Trusted by over 18,000 users
Stock Quotation
Market Cover
Satisfaction
Compared to other solutions, iTick offers significant advantages in data coverage, latency, protocol support, and pricing
| Feature | iTick Stock API | Other APIs |
|---|---|---|
| Market Coverage | 50+ exchanges including US, HK, A-Shares, Japan, Singapore | Usually single market only |
| Data Protocol | REST API + WebSocket real-time push | REST API only |
| Data Latency | Millisecond-level | Second-level |
| Data Depth | Level-2 depth, tick-level data | Basic quotes only |
| Historical Data | 10+ years of full historical data | Limited historical data |
| Pricing | Free plan with unlimited renewal, Enterprise plan with flexible subscription | Typically $200 - $1000+/mo, high barrier |
| Support | 24/7 multi-language support | Limited support |
Get a free API Key upon sign up and start using iTick stock data services today
Discover our most sought-after financial data APIs, covering stocks, forex, cryptocurrencies, indices, futures and funds across global markets with real-time quotes and historical data.
This platform gathers meticulously curated industry tutorials and cutting-edge news dynamics from our company, aiming to provide you with professional knowledge support in your field. For technical support or business consultation, please contact our expert team to get customized solutions.
Stock API
Compare 5 stock APIs for real-time & historical market data, including iTick, Alpha Vantage, Finnhub, Twelve Data and yfinance
Market Data
Alpha Vantage free API keys are limited to 25 requests per day. Compare Alpha Vantage pricing and limits with iTick, see when an Alpha Vantage alternative makes sense, and migrate GLOBAL_QUOTE, TIME_SERIES and FX calls with Python examples.
Technical Analysis
The Average Directional Index (ADX) explained: what ADX measures, how +DI, -DI and ADX are calculated with Wilder smoothing, how to read ADX values (20, 25, 40), common ADX trading strategies and a Python implementation using iTick market data.
Tutorial
Learn backtesting in Python from scratch: download historical OHLCV data with the iTick API, build a vectorised EMA crossover backtest in pandas, add trading costs, compute CAGR, Sharpe ratio and max drawdown, and avoid look-ahead bias and overfitting.
Market Data
An honest look at the Finnhub API free tier (about 60 calls per minute, personal use), how Finnhub pricing works, Finnhub vs Polygon, and when iTick is the better Finnhub alternative for Hong Kong, China A-share, forex and crypto data.
Market Data
There is no official Google Finance API anymore, and GOOGLEFINANCE quotes may be delayed up to 20 minutes. Learn the GOOGLEFINANCE function limits and how to pull real-time stock, forex and crypto prices into Google Sheets with a 10-line Apps Script and the iTick API.
Market Data
IEX Cloud was retired on August 31, 2024. What happened, what it means in 2026, and how to migrate quote, chart, intraday, order book and streaming calls to an IEX Cloud alternative such as the iTick stock API, with an endpoint mapping table and Python code.
Market Data
What is the difference between Level 1, Level 2 and Level 3 market data? Learn what each level contains, how to read a Level 2 order book, who needs which level, and how to get Level 2 depth data through an API.





Covering 50+ global exchanges including US, HK, and A-shares, with real-time order books and historical K-line data for quantitative trading and investment research