The very first Apple iPhone debuted in 2007. Since then, there have been 11 other upgrade or brand-new-model announcement dates.
In the week after these announcements, according to Kensho, the software industry group has outperformed all other technology, media and telecommunication assets with the greatest regularity.
Of the individual stocks within the software industry group itself, perhaps surprisingly, Microsoft was the biggest winner with an average boost of 2.15 percent. It traded positively about 85 percent of the time.