According to this article, Apple's stock split 7:1 on June 9, 2014. The stock supposedly closed at around \$645 on June 6 and was supposed to open at around \$92 on June 9. I confirmed that a split took place on June 9 through Yahoo Finance; however, according to the historical data table shown there, the closing price on June 6 was \$92.22 and the closing price on June 9 was \$93.70. (These are the regular closing prices, not adjusted. The adjusted closing prices are \$84.85 and \$86.21 for June 6 and June 9, respectively.) My understanding was that the regular closing prices are not adjusted for splits while adjusted closing prices are. If this is true, why is the \$645 closing price not shown in the chart on Yahoo Finance on the days leading up to the split?

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    $\begingroup$ There are numerous posts in this forum pointing out data quality problems with Yahoo Finance. (And since it is a free data source, it is perhaps not so surprising...). $\endgroup$
    – Alex C
    Commented Feb 13, 2019 at 1:08
  • $\begingroup$ Thanks, @AlexC. Was great to find that out. I am looking into other data sources now. $\endgroup$ Commented Feb 13, 2019 at 14:32


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