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Comment by getsat | Hacker News Reader

That data is also 15 minutes old (or older!) from what I recall. Probably not your best choice for anything remotely "realtime".

As parent said, you're better off getting a real market stream which will probably use FIX: http://en.wikipedia.org/wiki/Financial_Information_eXchange

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It should be realtime (not delayed 20 minutes), we will find out in 8 minutes if this is true. :)

Confirmed real-time, just streamed in:

    {
	"ticker": "AAPL",
	"exchange": "NASDAQ",
	"price": "598.86",
	"change": "-9.48",
	"change_percent": "-1.56",
	"last_trade_time": "Apr 19, 9:30AM EDT"
    }

I was referring to scraping Google/Yahoo. They have disclaimers on their sites that the information is N minutes old at best.

EDIT: I guess a few of them are actually realtime now. Here's the list: http://www.google.com/intl/en/googlefinance/disclaimer/

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