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Nike, meanwhile, is set to take ground from Adidas on its home turf - Europe.
In the first edition of its Alphawise European Sportwear note, sent to clients on Thursday, the investment bank says it has taken the temperature of European consumer, surveying 5,268 people across the
And what it found are a host of indications pointing to Nike overtaking Adidas in Western Europe.
There are 3 key charts that spell out its theory. Here's the first:
Morgan Stanley
But crucially, Nike outranks ranks Adidas as the "favourite" brand of more consumers- Nike's score on that metric is 10 percentage points higher than Adidas'.
Here's the second chart:
Morgan Stanley
And here's the third chart:
Morgan Stanley
In fact, Nike has a lead in every age group but its widest gap is with the younger generation - 13-24-year-olds.
What all this adds up to is that while Adidas is more popular at the moment in Europe, the wind appears to be in Nike's sails. The survey suggests Nike has a strong fan base among millennial consumers, a huge consumer base.
Morgan Stanley's Louise Singlehurst and team write: "Investors overlook the European market we believe with the view Adidas is dominant and Nike second. With both brands of similar size, our analysis suggests there is closer competition between the two and Adidas could be at risk of losing share in its home market to Nike."