Apple stock could sell off after the company announces its iPhone 17 series smartphones next month, a Wall Street analyst said Monday.

At the end of the year, Warren Buffett will step down as Berkshire's CEO, and Greg Abel will succeed him. If Buffett gets the investment portfolio to a more balanced position and leaves him with a ton of cash, Abel will be able to run things as he sees fit without needing to undo a bunch of decisions that he may not have agreed with.

Apple is anticipated to unveil its next iPhones in September, but analysts predict a potential stock dip following the launch due to incremental upgrades in the iPhone 17 series, including a new 'iPhone Air' model.