I check the Consolidated Financial Statements approximately every quarter to see how many shares Apple has outstanding, or available to public and not bought back by Apple. This latest quarter, Apple continued to buy back their own shares. With fewer shares available to buy, the supply goes down, so the demand goes up. Fewer shares doesn't automatically mean the stock will go up, but as of right now, I don't see Apple going anywhere, so there should still be a demand for Apple stock.
Below is my table that I use to track shares outstanding for Apple.
For me, and this is not financial advice, I will keep buying Apple shares when I can. The continuation of buying back shares is a good sign to me. Apple stock price took a big hit lately with the October correction, but I believe it will go back up with time.