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Technology Stocks : AAPL? How to trade/invest?

AAPL 270.37

-0.4%

Oct 31 9:30 AM EDT

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To: Jaime H. Ayalde who wrote (44)	4/23/1996 11:50:00 AM
From: xu, b.	of 162

RE:<How long is your periodicity on volatility.> I tried 60 days on daily chart. You may know that volatility is an issue under debate. It's not uncommon to define volatility by using standard deviation. But in a strong trend such as a series: 1, 2, 3, 4 .... One gets a very high SD without any downsize risk. Or high volatility = no risk. It's more important to identify range trading or trending. Volatility can be defined as the deviation from the trend, price range, % change and implied volatility as well. One can get completly different opinions from the same data. Be prepared before the volatility adventure.

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