Lumia brand has certainly lost a bit of its sheen post the deal-announcement. Lumia had a peak value of 35 during December 2013, which steadily declined to levels of 23, only to climb back to 25 very recently. Good news is that the recent trend in case of Lumia brand, is of rise in search popularity.
Nokia brand has also seen bit of decline from 2013 levels but is on the way up again. Samsung Galaxy brand which I included for comparison surprisingly has been declining in popularity all along. Cause of worry for Samsung?