Nikkei Press estimated the market share of movie distributors in Japan in 2015. According to it, Toho has the biggest share (33%). The industry-wide total sales were 217 billion yen in 2015.
Figure: 2015 Market Share of Movie Distributors in Japan
|Distributor||Market Share %|
Source is Nikkei Sangyo Shimbun newspaper, the article on 2016 July 25th.