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Help extracting weekly data - where is it hidden?
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Help extracting weekly data - where is it hidden?

  #1 (permalink)
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Help extracting weekly data - where is it hidden?

Hello everyone,

I am helping a friend who is interested in historical stock data charted at: http://research.investors.com/quotes/nasdaq-apple-inc-aapl.htm

The daily data is there (starting at line 1294) if you view the webpage source. However, if you select 'weekly' on the main webpage (chart changes to weekly data) and again select to view the source, only daily data is listed? Where is the weekly data hidden? It's not calculated via daily b/c the daily doesn't go back as far. Is the weekly data extractable? Thanks for your time and help.

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  #3 (permalink)
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you can get historical data from finance.yahoo.com

for apple
AAPL Historical Prices | Apple Inc. Stock - Yahoo! Finance

at bottom left of the page is says
download to spreadsheet.

Keep your mind in the future, in the now.
Attached Files
Register to download File Type: csv apple weekly.csv (86.1 KB, 1 views)
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  #4 (permalink)
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Thanks aquarian1,

They are aware of these other sources but want to use this source as the volume data is significantly different.

Any ideas how to extract the data that creates the weekly chart?

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  #5 (permalink)
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I looked at the page source (first) and could not see it there and I think it calls a prg to generate a PHP page.
Not sure but if this is the case I don't know how you would get it.

Keep your mind in the future, in the now.
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  #6 (permalink)
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I noticed you said the volume data is different - would that mean you feel it is more correct or just better suited to your purposes?

NT export daily data using Kinetick (which I have heard is very good). So if you are looking for a check on accuracy you can export the dailty to a CSV and sum a few weeks to check to see which source in more in-line with Kinetick.

Keep your mind in the future, in the now.
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GoldenRatio View Post
Hello everyone,

I am helping a friend who is interested in historical stock data charted at: Apple Inc Stock Quote: AAPL Stock News, Quotes, Analysis | Investors.com

The daily data is there (starting at line 1294) if you view the webpage source. However, if you select 'weekly' on the main webpage (chart changes to weekly data) and again select to view the source, only daily data is listed? Where is the weekly data hidden? It's not calculated via daily b/c the daily doesn't go back as far. Is the weekly data extractable? Thanks for your time and help.

Instead of reverse engineering a website for weekly data, much better to either use an actual data feed and an API (like IQFeed or etc) if you are a developer, or use a reliable public data source like Yahoo data.

If the weekly volume on this website is different than aggregated daily volume data, step 1 is to fully document and understand the correct method to build a weekly chart.

Mike

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Thanks for all the replies. I agree with all the suggestions (I would do them) but ... this is not my request - I am simply helping a friend.

For whatever reason they want the weekly volume data posted there. I concur the obvious solution is to create weekly data from the daily. That can easily be done. Their response was the weekly data goes back further and would take months to build a database to generate weekly charts as long. Anyway, I thought no harm in asking the smart minds here is they knew of a way 'seeing' weekly data from the site.

Appreciate everyone's time and input!

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GoldenRatio View Post
Thanks for all the replies. I agree with all the suggestions (I would do them) but ... this is not my request - I am simply helping a friend.

For whatever reason they want the weekly volume data posted there. I concur the obvious solution is to create weekly data from the daily. That can easily be done. Their response was the weekly data goes back further and would take months to build a database to generate weekly charts as long. Anyway, I thought no harm in asking the smart minds here is they knew of a way 'seeing' weekly data from the site.

Appreciate everyone's time and input!

Many sites like Yahoo, Google, Quandl, others have huge repositories of historical data for free for daily data, some of which would start at the conception of the instrument.

I would encourage this route over being tied to a particular 'hack'.

Mike

Due to time constraints, please do not PM me if your question can be resolved or answered on the forum.

Need help?
1) Stop changing things. No new indicators, charts, or methods. Be consistent with what is in front of you first.
2) Start a journal and post to it daily with the trades you made to show your strengths and weaknesses.
3) Set goals for yourself to reach daily. Make them about how you trade, not how much money you make.
4) Accept responsibility for your actions. Stop looking elsewhere to explain away poor performance.
5) Where to start as a trader? Watch this webinar and read this thread for hundreds of questions and answers.
6)
Help using the forum? Watch this video to learn general tips on using the site.

If you want
to support our community, become an Elite Member.

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