StockSocket

Real-Time Yahoo Finance Stock data.

This module opens a Websocket connection with Yahoo for reliable, fast, and lightweight market data.

const StockSocket = require("stocksocket");

StockSocket.addTicker("TSLA", stockPriceChanged);

function stockPriceChanged(data) {
  //Choose what to do with your data as it comes in.
  console.log(data);
}

Installation

This is a Node.js module available through the npm registry.

If this is a brand new project, make sure to create a package.json first with the npm init command.

Installation is done using the npm install command:

$ npm install stocksocket

How does it work?

• Yahoo Finance uses Websockets to transfer stock data when you open their page on your browser.
• This module leverages that functionality by opening its own direct WebSocket connection with Yahoo (skipping the need for the browser in the process).
• As a result, this module is far more lightweight and quick than previous versions of this module (which used Puppeteer and inefficient web-scraping).

Sample Output

Pre-Market

Regular Market (Contains Real-Time Volume Updates)

Post-Market

Cryptocurrencies

Docs

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addTicker(stockticker, callback)

Start data stream for a specific ticker

var stockticker = "TSLA";

StockSocket.addTicker(stockticker, stockPriceChanged);

function stockPriceChanged(data) {
  console.log(data);
}

stockticker (type: String)

String object containing a stock ticker to be added.

callback (type: Function)

Callback Function that receives each price update

---

addTickers([stocktickers], callback)

Start data stream for an array of tickers

var stocktickers = ["TSLA", "NNDM", "AAPL", "MARA"];

StockSocket.addTickers(stocktickers, stockPriceChanged);

function stockPriceChanged(data) {
  console.log(data);
}

stocktickers (type: Array)

Array of string objects containing the stock tickers

callback (type: Function)

Callback Function that receives each price update

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removeTicker(stockticker)

Stop data stream for a specific ticker.

var stockticker = "TSLA";

StockSocket.removeTicker(stockticker);

stockticker (type: String)

String object containing a stock ticker to be added.

---

removeTickers([stocktickers])

Stop data stream for various tickers

var stocktickers = ["TSLA", "NNDM", "AAPL", "MARA"];

StockSocket.removeTickers(stocktickers);

stocktickers (type: Array)

Array of string objects containing the stock tickers to be removed.

---

removeAllTickers()

Stop data stream for all tickers

StockSocket.removeAllTickers();

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License

MIT