[Merlins]

Depends on how you are counting. Number of studios, number of exclusive titles, market size on theater, market size on DVD, stock share etc. and under which time frame.

However. it is about 70-85% for Blu-ray in most numbers except number of titles. Universal did push out a lot of catalouge titles last summer but the picture quality shrunk at the same speed.

Here is a couple of examples:
Market share in theaters for the exclusive studios
2006:

				
1	Sony / Columbia 	18.60%		
2	Buena Vista 		16.20%	
3	20th Century Fox 	15.20%		
4	Warner Bros. 		11.60%	
5	Paramount 		10.30%	
6	Universal 		8.90%	
7	Lionsgate 		3.60%	
8	New Line 		2.70%	
9	Weinstein Company 	2.50%		
10	MGM/UA 			1.80%
11	Fox Searchlight 	1.80%		
12	Focus Features 		1.30%

2007:

						
	1	Paramount 		15,50%			
	2	Warner Bros, 		14,70%		
	3	Buena Vista 		14,00%		
	4	Sony / Columbia 	12,90%		
	5	Universal 		11,40%			
	6	20th Century Fox 	10,50%		
	7	New Line 		5,00%		
	8	Lionsgate 		3,80%	
	9	MGM/UA 			3,80%		
	10	Fox Searchlight 	1,40%			
	11	Miramax 		1,30%		
	12	Rogue Pictures 		0,80%	

2008:

				
	1	Warner Bros.		20,80%	
	2	20th Century Fox 	16,80%	
	3	Paramount 		11,10%	
	4	Buena Vista 		10,80%	
	5	Fox Searchlight 	9,30%	
	6	Sony / Columbia 	8,90%	
	7	Universal 		4,60%	
	8	Paramount Vantage 	3,40%	
	9	Focus Features 		3,20%	
	10	Lionsgate 		2,30%	
	11	Overture Films 		1,90%	
	12	MGM/UA 			1,80%	

And remember that this is only the studio support. Add extra retail support, software support and a lot more CE-support and you will understand that HD-DVD is pretty much only Toshiba and Universal+Paramount that does not release so many movies these days...