Scrape most active stocks, detailed stock quotes, historical prices, and options chain prices from Yahoo Finance with ruby.
See http://github.com/huned/yahoo_finance_scraper
Add this line to your application's Gemfile:
gem 'yahoo_finance_scraper'
And then execute:
$ bundle
Or install it yourself as:
$ gem install yahoo_finance_scraper
By default, assumes you want to get data with Net::HTTP.
Get company details:
YahooFinance::Scraper::Company.new('yhoo').details
returns:
{ :name => "Yahoo! Inc.",
:dividend_per_share => 0.0,
:earnings_per_share => 0.877,
:price_to_sales => 3.76,
:price_to_book => 1.46,
:price_to_earnings => 17.45,
:peg_ratio => 1.26,
:short_ratio => 1.9,
:dividend_yield => 0.0 }
Get historical daily stock prices:
# Get historical daily stock prices of yhoo.
# Note that `from` and `to` are both optional.
YahooFinance::Scraper::Company.new('yhoo').historical_prices(from, to)
returns:
[ { :open => 15.51,
:high => 15.73,
:low => 15.5,
:close => 15.63,
:volume => 9799300,
:date => 2012-05-01 00:00:00 -0700 },
{ :open => 15.58,
:high => 15.77,
:low => 15.54,
:close => 15.67,
:volume => 10841000,
:date => 2012-05-02 00:00:00 -0700 },
... ]
Get current options chain:
# Get the current options chain
YahooFinance::Scraper::Company.new('yhoo').options_chain
returns:
# note that you can extract the symbol, expiry, put/call, and strike
# from the option symbol string.
[ { "YHOO120519C00009000" =>
{ :last => 6.1,
:change => 0.0,
:bid => 0.0,
:ask => 0.0,
:volume => 5.0,
:open_int => 5.0,
:strike => 9.0,
:expires_at => 2012-05-19 00:00:00 -0700 } },
{ "YHOO120519C00010000" =>
{ :last => 5.7,
:change => 0.0,
:bid => 0.0,
:ask => 0.0,
:volume => 20.0,
:open_int => 107.0,
:strike => 10.0,
:expires_at => 2012-05-19 00:00:00 -0700 } },
... ]
Get the day's actives, % gainers, and % losers:
YahooFinance::Scraper::Actives.new.actives # or #gainers or #losers
returns:
[ { :symbol => "FOSL", :name => "Fossil, Inc." },
{ :symbol => "MAKO", :name => "MAKO Surgical Corp." },
{ :symbol => "MRGE", :name => "Merge Healthcare Incorporated." },
... ]
You can also control how the http GET happens. Just instantiate with a
getter that implements a get method that takes a single string argument
and returns the body of the request as a string.
class CustomGetter
def get url
# get the url and return its contents as a string
end
end
YahooFinance::Scraper::Company.new('yhoo', getter: CustomGetter.new)
YahooFinance::Scraper::Actives.new(getter: CustomGetter.new)
Why have a custom getter? Because maybe you want to proxy via Tor so you don't get cut off for making lots of requests. See Tor::Proxy for a helpful gem.
- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Added some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request