13 votes

Is Yahoo! Finance data good or bad now?

What has changed The API is gone. The new downloads need 1st to parse the Yahoo Finance page to find a hidden crumb and use it as the key for data retrieval over a 2nd URL. The adjusted close is ...
mementum's user avatar
  • 628
4 votes

Total Returns From Adjusted Close Prices

It is indeed no rounding error, but follows from the way Yahoo computes the adjusted price: it does not reflect the actual returns of the investor. Just look at August 17 and 20. The actual close ...
Enrico Schumann's user avatar
2 votes

Is Yahoo! Finance data good or bad now?

No. I’m watching the management of a penny stock manipulate its share price by announcing a reverse stock split and yahoo hasn’t adjusted its prices going on a week and a half. The algorithms thinks ...
Jerry's user avatar
  • 21
1 vote

Discrepancy between total shareholder return and return calculated using adjusted share price?

RETURN Firstly, return is based upon the amount gained over a period of time. So your calculation for a percentage return should actually be be: (Sale price - Cost basis)/Cost Basis. TOTAL RETURN ...
Richard at NorgateData's user avatar
1 vote

Backtesting and dividend adjustments

Your return calculation should be on total return, i.e. include dividend income. Your signal, if it is price only, then you should take the price series and not adjust.
Larasing's user avatar
  • 193
1 vote

Design models using adjusted or unadjusted stock prices (time series prediction)?

Whenever you are looking to estimate total return, you would use adjusted closing prices. If you are strictly looking for the future stock price, you would use unadjusted closing price. I assume, ...
RandyF's user avatar
  • 719

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