Stock finance in mvc4 and Jquery or javascript

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I'm trying to have in a website a stock finance about a company in real time and I read a lot about yahoo and Google, but it seams that Google is to be shutdown, and yahoo only allow 1000 per hour, so what is the best that I can use, and also there are any examples to follow? I already try this\[code\]$(document).ready(function () { var callback = function (data) { var price = data.query.results;}; var url = 'http://query.yahooapis.com/v1/public/yql'; var data = 'http://stackoverflow.com/questions/15519118/q=select * from finance.yahoo.com where symbol = ("BSY.L")&format=json'; $.getJSON(url, data, callback);});\[/code\]but is always saying that a bad request