As you see from the chart : http://imgur.com/a/JDWXy
Apple stock dropped suddently in June 2 2014.
I googled the news at that moment and found APPLE just released iOS 8.0 at that moment.
But from the chart you can see, the stock value suddently dropped into pieces. Did you know what happen?
Well i found the answer.
here's the article.
https://www.stocksplithistory.com/apple/
Apple split its stock at a radio 1:7 which indicates that the amount of stocks is 7 times bigger but the price had been divided by 7.
I would assume that APPLE really scared that they will never reach $700 for a stock unint. So they divided the stock amount, and now you see the price is above $110 (2016), which is much higher than that APPLE's stock price reached $702.41 in 2013. Actually we can take the $110 in 2016 as $770 comparing to the stock price of APPLE in year 2013.
They fooled the market... how do you think?
Stock split/inplit is a common stock market practice.
Companies try to keep the price of their stocks between values that will not hurt their liquidity (too high/"expensive") or make them too volatile (too low/"cheap").
On QuantConnect/Lean, we can choose whether we want our algorithm to work with Raw or Adjusted prices:
// In Initialize
// By default, data is adjusted (dividends and splits are incorporated in the price)
AddEquity("AAPL");
//Setting the data normalization mode for the AAPL security to raw (pay dividends as cash)
Securities["APPL"]
.SetDataNormalizationMode(DataNormalizationMode.Raw);
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