The impact of the Whole Foods acquisition has already been dramatic. After the deal was announced, the value of Amazon’s stock went up by more than the purchase price, which means the deal paid for itself. The value of Amazon’s closest competitors, including Target, whose stock dropped by 10 percent, and Walmart, whose stock dropped by 5 percent, fell by an even larger amount.
This is not what is supposed to happen. Amazon’s stock is supposed to drop with the acquisition of a troubled company.
Something which increases the value of Amazon should make the stock price rise, something that diminishes it fall. Very much he majority of corporate purchases destroy value for the purchasing company thus the general observation that the stock price of the acquiring company falls. But there’s no “should” about it, it’s just a general observation. If it is though that this deal will boost Amazon profits then the price will rise. As people obviously do think because the price has risen.