I am no expert.
Disclosure before I type, I have apple stock in my investments.
Question
Why do you want to sell it......
Do you want to sell because you think the stock is going to go down?
DO you want to sell it because you are to take the money out of the market?
Do you think you can buy something else, and make more of a profit faster?
How active do your trade?
They reported there Q3 numbers, they were good is why it went up.
I am personally betting / think if Q3 was good so will be Q4.
So yes, I think the stock will go up.
I also think there will be some ups & downs along the way, but overall the company will grow, the stock price will climb, and they will keep paying there dividend.
Weather to sell or not has a lot to do with how do you invest and how you use / view the market.
But if you want a nice safe place to leave $650 - $790, leave it with apple and keep reinvesting those dividends.