As Apple continues to plunge on China economic worries and yet
The theory behind technical analysis is that when prices reach previous levels where participants bought and sold in volume, those levels can be areas of support. However, the levels can also signal further downside if broken.
"The market has memory. Historic levels of supply tend to be recognized by market participants in the future when these prices are tested once again," J.C. Parets, Eagle Bay Capital's president, said.
CNBC Pro asked several chart experts to analyze the current prospects for Apple after the recent volatility. Here is what they said: