A roundup of academic research from the world of IR studies
The efficient markets theory suggests that, all else being equal, the stock market effect of two concurrently issued corporate press releases should equal the sum of the announcements issued separately. But a new study of more than 80,000 US announcements shows that, in certain circumstances, one plus one is greater than two when it comes to company value.
‘Issuing a new product release on the same day as another positive announcement has more punch than two stand-alone announcements,’
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