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help: Diferent close price for the same date?

I fetch the close prices using diferent methods and i dont get the same output.

One method was get_pricing()

get_pricing_close = get_pricing(symbols('AAPL'), start_date=startDay, end_date=endDay).close_price  

The other was trougth the pipeline

USclose= USEquityPricing.close.latest

return Pipeline(  
        columns={ 'USEquityPricing.close': USclose}  
)

And the third one is the yahoo finance close price.

I dont get what is going on.

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2 responses

Very common question. The short answer is that the get_pricing method adjusts for splits and dividends as of the end date. Pipeline is adjusted daily as of the pipeline date (ie the date in the level 0 index). Yahoo prices are adjusted as of the current date. Being adjusted as of different dates makes the prices and volumes appear different. There are several post which go into more detail and, interestingly, also reference AAPL. Take a look at the following:

https://www.quantopian.com/posts/inconsistent-aapl-data-between-prices-and-data-comming-from-the-pipeline
https://www.quantopian.com/posts/usequitypricing-and-get-pricing-data-difference

Hope that makes things clearer.

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thanks, sory for duplicated post. Im just getting started