Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Where can I find information on the percentage of volume is contributed by shorts?
You can do a lot of deduction FINRA keeps a "REG-SHO" list created daily that tells what the daily short volume is. March 26th 2014's list: http://regsho.finra.org/FNSQshvol20140326.txt If you are talking about the United States, this answer may be better ;)