Post by Robert Riches
For the benefit of the original poster in this thread (and anyone
else who might be following the thread), Google has a reasonably
useful API that can access much of what Yahoo used to provide.
There may be other fields available, but I have not seen
documentation of them. I had to modify the URL to be more like
It looks like about 14 days worth of data (at 60-second
intervals) is the most the API will return.
These sites are a tremendous find. I was especially interested in the
Norwegian site that was supposed to give bid/asked prices. Unfortunately
for me the site didn't respond.
After Verizon took over yahoo finance they not only dropped the old
method of fetching quotes, but they changed all their data sources
I posted a c routine which allowed one to scrape the quote data
from the web site without using a browser.
For intraday tracking someone suggested I set up a portfolio
and use the export command in the yahoo page. That works
very well and I am now comfortable with that.
within the browser. It is possible to scrape all that data
from one page download by poking around in the html source.
I have come to mistrust Google financial data. When I compare
financial data downloaded from google with that from either
Edgar or Yahoo, I find little changes in the google data that
seem deliberate. Sometimes quarterly data will be reversed,
sometimes the format of individual fields will differ.
Sometimes quarterly data is not given in sequence, the list
Some time ago when paper maps were used I read that each map
company puts little errors such as misspellings in the map
to catch copyright violators. I think google may have such
Thanks for the sources, I will probably spend the rest of
the day playing with the data.