The research measured all mentions across 10,000 UK and European feeds and shows Adidas and Coca-Cola together are responsible for more than a third of the total share of voice of all 15 partners.
As well as leading the official partners for mentions, Adidas has achieved nearly three times as much press coverage as non-partners Nike and Puma, who led successful guerrilla campaigns around the last World Cup.
Spikes in coverage for Adidas coincided with the launch of its '10+1' campaign last October and the unveiling of the official World Cup ball in December.
The worst-performing sponsors thus far are Fujifilm and Continental Tyres. Each have just six mentions since September.