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Gem to fetch up-to-date stock quotes and other market data

branch: master
README.md

MarketBeat

Market Beat is a Ruby library that fetches stock quotes and other financial and market indicators from publicly available sources. Currently Google and Yahoo market reporting services are supported.

Installation

# Installing as Ruby gem
$ gem install market_beat

# Cloning the repository
$ git clone git://github.com/michaeldv/market_beat.git

Usage

Require "market_beat" gem, then invoke one of the MarketBeat's methods passing stock symbol as a parameter. Stock symbols are case insensitive and could be passed as a symbol or a string.

For example, to fetch today's opening price and the very latest trade price for the Apple stock (NASDAQ symbol 'AAPL') use the following:

>> require "market_beat"
>> MarketBeat.opening_price :AAPL
"396.69"
>> MarketBeat.last_trade_real_time :AAPL
"397.07"

Some methods return multiple values:

>> MarketBeat.change_and_percent_change :IBM
["-5.77", "-3.08%"]
>> MarketBeat.last_trade_with_time :IBM
["4:02pm", "181.47"]

Fetching historical quotes returns array of hashes where each hash represents stock data for a given date:

>> MarketBeat.quotes(:AAPL, "2011-12-21", "2011-12-22")
[{:date=>#<Date: 2011-12-22 (4911835/2,0,2299161)>, :open=>"397.00",
:high=>"399.13", :low=>"396.10", :close=>"398.55", :volume=>"7227016"},
{:date=>#<Date: 2011-12-21 (4911833/2,0,2299161)>, :open=>"396.69",
:high=>"397.30", :low=>"392.01", :close=>"396.44", :volume=>"9390954"}]

Available Methods (Real Time Data)

MarketBeat.after_hours_change_real_time
MarketBeat.ask_real_time
MarketBeat.bid_real_time
MarketBeat.change_percent_real_time
MarketBeat.change_real_time
MarketBeat.color_code_real_time
MarketBeat.days_range_real_time
MarketBeat.days_value_change_real_time
MarketBeat.holdings_gain_percent_real_time
MarketBeat.holdings_gain_real_time
MarketBeat.holdings_value_real_time
MarketBeat.last_trade_datetime_real_time
MarketBeat.last_trade_real_time
MarketBeat.last_trade_real_time_with_time
MarketBeat.last_trade_time_real_time
MarketBeat.market_cap_real_time
MarketBeat.order_book_real_time
MarketBeat.pe_ratio_real_time
MarketBeat.percent_change_real_time

Available Methods (Delayed Data)

MarketBeat.annualized_gain
MarketBeat.ask
MarketBeat.ask_size
MarketBeat.average_daily_volume
MarketBeat.bid
MarketBeat.bid_size
MarketBeat.book_value
MarketBeat.brut_last
MarketBeat.brut_trade_date_utc
MarketBeat.brut_trade_time_utc
MarketBeat.change
MarketBeat.change_and_percent_change
MarketBeat.change_from_200_day_moving_average
MarketBeat.change_from_50_day_moving_average
MarketBeat.change_from_52_week_high
MarketBeat.change_from_52_week_low
MarketBeat.chart_url
MarketBeat.commission
MarketBeat.company
MarketBeat.currency
MarketBeat.current_date_utc
MarketBeat.current_time_utc
MarketBeat.daylight_savings
MarketBeat.days_high
MarketBeat.days_low
MarketBeat.days_range
MarketBeat.days_value_change
MarketBeat.delay
MarketBeat.disclaimer_url
MarketBeat.dividend_pay_date
MarketBeat.dividend_to_share
MarketBeat.dividend_yield
MarketBeat.divisor
MarketBeat.earnings_to_share
MarketBeat.ebitda
MarketBeat.ecn_url
MarketBeat.eps_estimate_current_year
MarketBeat.eps_estimate_next_quarter
MarketBeat.eps_estimate_next_year
MarketBeat.error_indication
MarketBeat.ex_dividend_date
MarketBeat.float_shares
MarketBeat.high_52_week
MarketBeat.high_limit
MarketBeat.holdings_gain
MarketBeat.holdings_gain_percent
MarketBeat.holdings_value
MarketBeat.isld_last
MarketBeat.isld_trade_date_utc
MarketBeat.isld_trade_time_utc
MarketBeat.last_trade
MarketBeat.last_trade_date
MarketBeat.last_trade_size
MarketBeat.last_trade_time
MarketBeat.last_trade_with_time
MarketBeat.low_52_week
MarketBeat.low_limit
MarketBeat.market_capitalization
MarketBeat.more_info
MarketBeat.moving_average_200_day
MarketBeat.moving_average_50_day
MarketBeat.notes
MarketBeat.one_year_target_price
MarketBeat.opening_price
MarketBeat.pe_ratio
MarketBeat.peg_ratio
MarketBeat.percent_change
MarketBeat.percent_change_from_200_day_moving_average
MarketBeat.percent_change_from_50_day_moving_average
MarketBeat.percent_change_from_52_week_high
MarketBeat.percent_change_from_52_week_low
MarketBeat.pretty_symbol
MarketBeat.previous_close
MarketBeat.price_paid
MarketBeat.price_to_book
MarketBeat.price_to_eps_estimate_current_year
MarketBeat.price_to_eps_estimate_next_year
MarketBeat.price_to_sales
MarketBeat.quotes
MarketBeat.range_52_week
MarketBeat.shares_owned
MarketBeat.short_ratio
MarketBeat.stock_exchange
MarketBeat.stock_exchange_closing
MarketBeat.stock_exchange_timezone
MarketBeat.stock_exchange_utc_offset
MarketBeat.symbol
MarketBeat.symbol_lookup_url
MarketBeat.symbol_url
MarketBeat.ticker_trend
MarketBeat.trade_date
MarketBeat.trade_date_utc
MarketBeat.trade_time_utc
MarketBeat.trade_timestamp
MarketBeat.volume

Running Specs

$ gem install rspec           # RSpec 2.x is the requirement.
$ rake spec                   # Run the entire spec suite.
$ rspec spec/google_spec.rb   # Run individual spec file.

Note on Patches/Pull Requests

  • Fork the project on Github.
  • Make your feature addition or bug fix.
  • Add specs for it, making sure $ rake spec is all green.
  • Commit, do not mess with Rakefile, version, or history.
  • Send me a pull request.

License

Copyright (c) 2011-12 Michael Dvorkin

twitter.com/mid

%w(mike dvorkin.net) * "@" || %w(mike fatfreecrm.com) * "@"

Released under the MIT license. See LICENSE file for details.

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