![]() By clicking on Done, you’ll see a page showing a different period, in this case to (the day before the dates you’ve set).Īnd to get matters even more confusing, after clicking on Apply, Yahoo will show you data from to : In this case, you wanted the period to span from to, as shown below. ![]() You click on it, and chooses a start and end date. Let’s suppose you wish to change this period. What we are going to do is to simulate this click, by sending Yahoo’s servers the same request this button would.īut before that, there is one odd behaviour you should notice in Yahoo Finance’s website, and that is related to the time period you choose. csv file) by clicking the Downloadbutton. The returned time series can be downloaded (as a. The idea here is to download the time series returned by Yahoo Finance when, from its webpage, we choose a time period and frequency, and then hit the Applybutton (below). I know of no one providing a free API specifically to R. There are some other APIs out there, such as the one provided by RapidAPI, but these are non-official and limited in their free accounts. Before going any further, however, it’s worth mentioning that, even though Yahoo Finance actually had, at some point, an API of its own, apparently due to some legal problems they had to discontinue it. Still, what interests us here is the historical price series, which is for free. ![]() The platform will then show you some free information, both technical and fundamental, about the desired company and stock (naturally, the best pieces are kept for Yahoo Finance’s premium accounts). This is not necessarily the company’s trading code at the market, but its representation in Yahoo Finance. To get the numbers for a specific stock, all you have to do is to search for its Yahoo code (ex: VALE – see figure below). Yahoo Finance (below) is a website that gives us a good deal of information about the financial market, including information about stock trading. ![]()
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