The stock-market impact of Apple’s WWDC keynote

Each and every time Apple collects the technology press for an event, TechCrunch takes the time to track the impact of the company’s announcements on the value of its equity. The result is usually nothing at all; investors simply don’t trade Apple based on the products or services it announces.
If that surprises you, welcome to the club. You might think that the substance of what Apple announces matters to folks buying and selling its shares on any given day, but it mostly doesn’t.
Today’s chart makes this lack of connection plain. Here’s stock market data through

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