Ruby's Yahoo Finance Wrapper
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A dead simple wrapper for yahoo finance quotes end-point.

Usage:

1 - Getting latest quotes for a set of symbols
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Just pass an array of symbols (stock names, indexes, exchange rates) and a list of fields you want:

data = YahooFinance.quotes(["BVSP", "NATU3.SA", "USDJPY=X"], [:ask, :bid, :last_trade_date])
# ask will be a string here:
puts data[0].symbol + " value is: " + data[0].ask 

Or optionally:

data = YahooFinance.quotes(["BVSP", "NATU3.SA", "USDJPY=X"], [:ask, :bid, :last_trade_date], { :raw => false } )
# ask will be a float here:
puts data[0].symbol + " value is: " + data[0].ask 

The full list of fields follows:

     :ask
     :average_daily_volume
     :ask_size
     :bid
     :ask_real_time
     :bid_real_time
     :book_value b4
     :bid_size b6
     :chance_and_percent_change
     :change
     :comission
     :change_real_time
     :after_hours_change_real_time
     :dividend_per_share
     :last_trade_date
     :trade_date
     :earnings_per_share
     :error_indicator 
     :eps_estimate_current_year 
     :eps_estimate_next_year 
     :eps_estimate_next_quarter 
     :float_shares 
     :low 
     :high 
     :low_52_weeks 
     :high_52_weeks 
     :holdings_gain_percent 
     :annualized_gain 
     :holdings_gain 
     :holdings_gain_percent_realtime 
     :holdings_gain_realtime 
     :more_info 
     :order_book 
     :market_capitalization 
     :market_cap_realtime 
     :ebitda 
     :change_From_52_week_low 
     :percent_change_from_52_week_low 
     :last_trade_realtime_withtime 
     :change_percent_realtime 
     :last_trade_size 
     :change_from_52_week_high 
     :percent_change_from_52_week_high 
     :last_trade_with_time 
     :last_trade_price
     :close 
     :high_limit 
     :low_limit 
     :days_range
     :days_range_realtime 
     :moving_average_50_day 
     :moving_average_200_day 
     :change_from_200_day_moving_average 
     :percent_change_from_200_day_moving_average 
     :change_from_50_day_moving_average 
     :percent_change_from_50_day_moving_average 
     :name 
     :notes 
     :open 
     :previous_close 
     :price_paid 
     :change_in_percent 
     :price_per_sales 
     :price_per_book 
     :ex_dividend_date
     :pe_ratio 
     :dividend_pay_date 
     :pe_ratio_realtime 
     :peg_ratio 
     :price_eps_estimate_current_year 
     :price_eps_Estimate_next_year 
     :symbol 
     :shares_owned 
     :short_ratio 
     :last_trade_time 
     :trade_links 
     :ticker_trend 
     :one_year_target_price 
     :volume
     :holdings_value 
     :holdings_value_realtime 
     :weeks_range_52 
     :day_value_change 
     :day_value_change_realtime 
     :stock_exchange 
     :dividend_yield 


2 - Getting historical quotes
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Here you can specify a date range and a symbol, and retrieve historical data for it. 
The last parameter (options) can include, besides the "raw" option, a "period" option.
The period can be specified as :daily, :monthly, :weekly or :dividends_only

data = YahooFinance.historical_quotes("BVSP", Time::now-(24*60*60*10), Time::now) # 10 days worth of data

or

data = YahooFinance.historical_quotes("BVSP", Time::now-(24*60*60*10), Time::now, { :raw => false, :period => :monthly })





Enjoy! :-)

- Herval ([email protected])