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A chart posted by Fortune showing what happened to Apple’s stock price for 12 months before and after each new iPhone launch shows that it rose after four of the six launches.

Conventional wisdom says that Apple traders buy the rumor and sell the news, but the series of stock charts Deutsche Bank’s Chris Whitmore shared with clients Monday suggest the opposite.

The brief piece explains the exceptions by observing that the 3G launched just before a major recession and the iPhone 5 when the stock was already at an all-time high, but we wouldn’t suggest investing any money on the basis of those six squiggly lines …

Update: BTIG’s Waltyer Piecyk has posted some more short-term historical data, suggesting that the separation of iPhone announcements from WWDC ended the ‘sell on the news’ phenomenon:

AAPL-Price-Perf

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About the Author

Ben Lovejoy

Ben Lovejoy is a British technology writer and EU Editor for 9to5Mac. He’s known for his op-eds and diary pieces, exploring his experience of Apple products over time, for a more rounded review. He also writes fiction, with two technothriller novels, a couple of SF shorts and a rom-com!

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