https://www.siliconvalley.com/2024/09/04/apple-rally-fueled-by-ai-promises-approaches-crucial-test/

Apple’s upcoming iPhone release has sent its stock price soaring because of promised artificial-intelligence features. Those gains appear vulnerable, at least in the short term, if history is any guide.

The company’s stock typically underperforms after iPhone launches, a cautious precedent when expectations are sky-high and Apple’s share price relative to earnings is quite rich leaving little room for error.