Comparing Apple’s (AAPL) Stock Price to Social Media Sentiment During Apple’s Annual Product Launches

How did Apple’s stock move compare to social media sentiment during Apple’s September product launch month over the past ten years? There has been a consistent buy on the rumor and selling the news pattern around Apple product launches.

We used the MarketPsych MCP Radar tool connected with Claude to track how social media sentiment surrounding the Apple stock price changes before vs. after Apple product launches.

The last decade of product launches showed an average -0.3% return in the week following the product launches. The iPhone 18 launched on September 18th, and there was an uncharacteristic gain of 5% in the day following the launch. The market seems to think the iPhone 18 will be a bigger hit than was expected.