The daily short percentage data is restricted to shorting on the NASDAQ, Amex and NYSE because of their mandatory reporting and does not include the electronic exchanges and dark pools. Without much exception when I see daily short percentage above 50% its almost always shorts left on the table that session. When I see 76% short percentage I see a lot of shorts left on the table. What has been really strange over the past couple of months is that shorts have added over 3.4 million to the count but, when you look at the shares available to short on Finra, it has consistently shown 2 million to 3 million available shares. How does the shares available to short number stay the same when they pile on an additional 3.4 million shorts? The only answer I can think of is naked shorting by the millions of shares.