https://www.techradar.com/news/sony-claims-top-spot-in-us-full-frame-camera-market

Following a flurry of launches in the last 12 months or so, including the Alpha A7R III, A7 III and A9, it may not come as a surprise to learn that Sony has announced that it's sold more full-frame cameras than any other brand in the US over the past six months.

In a press release, Sony reveals that it's overtaken Canon to take the number one position (measured both by units sold and value) in the United States full-frame camera market in the first half of 2018. To simplify that, four out of every 10 full-frame cameras sold during that time period has been a Sony.