Yafa

Yahoo Finance API wrapper, fetch stock quotes and stock chart data

Setup

Just install yafa or add it to your gemfile gem 'yafa'

Usage

Quotes data

Fetches the current/most recent stock quote:

tickers = ['GOOG']
fetcher = StockQuotes.new(tickers)
quotes  = fetcher.fetch

Tickers array takes up to 400 tickers at once

Chart data

Fetches per-minute quotes for the last day, good for making charts of recent stock prices

ticker = 'GOOG'
fetcher = StockChart.new(ticker)
chart_data = fetcher.fetch

Fetches for a single ticker per request

Historical Data

Coming soon...

Worth knowing

• Yahoo Finance API sometimes goes down, so handle failed requests
• Stay under your Yahoo API request limit, something like 20k/day (based on IP address making the request)

Improvements

• Historical data api
• Config for fetcher (i.e. timeouts, query params)
• Option to replace Yahoo time and key formatting with a consistent format